{"product_id":"a011595287","title":"NO-Feng-PDiPPRa, L-RaPr2, 95% | 1005495-74-8","description":"\u003cstyle\u003e\n  \/* isQuote *\/\n  div.swatch.clearfix {\n    display: none !important;\n  }\n\n  \/* Hide sku *\/\n  .product-sku, \n  #leadtimetext {\n    display: none !important;\n  }\n\n  \/* Square brackets *\/\n  span.l_bracket:before {\n    content: \"[\";\n  }\n  span.r_bracket:after {\n    content: \"]\";\n  }\n\n  \/* Hazard Symbols *\/\n  .ghs-symbols-row {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 10px;\n  }\n\n  .hazard-symbol-container {\n    width: 50px;\n  }\n\n  .hazard-symbol {\n    object-fit: contain;\n    aspect-ratio: 1 \/ 1;\n    width: 100%;\n  }\n\n  \/* Section *\/\n  .section-header {\n    font-size: 1.5rem;\n    font-weight: bold;\n    color: #239ab7;\n    background-color: #f2f2f2;\n    padding: 10px;\n    border-radius: 4px;\n  }\n\n  .section-row {\n    display: grid;\n    grid-template-columns: repeat(8, 1fr);\n    padding: 6px 10px;\n    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class=\"row-value\"\u003eNO-Feng-PDiPPRa, L-RaPr2, 95%\u003c\/div\u003e\n        \u003c\/div\u003e\n        \n        \n        \n        \u003cdiv class=\"section-row\"\u003e\n            \u003cdiv class=\"row-key\"\u003eBrand Name\u003c\/div\u003e\n            \u003cdiv class=\"row-value\"\u003eJ\u0026amp;K\u003c\/div\u003e\n        \u003c\/div\u003e\n        \n\n        \n        \u003cdiv class=\"section-row\"\u003e\n            \u003cdiv class=\"row-key\"\u003eProduct Number\u003c\/div\u003e\n            \u003cdiv class=\"row-value\"\u003e1595287\u003c\/div\u003e\n        \u003c\/div\u003e\n        \n\n        \n        \u003cdiv class=\"section-row\"\u003e\n            \u003cdiv class=\"row-key\"\u003eCAS\u003c\/div\u003e\n            \u003cdiv class=\"row-value\"\u003e1005495-74-8\u003c\/div\u003e\n        \u003c\/div\u003e\n        \n\n        \n\n        \n\n        \n        \u003cdiv class=\"section-row\"\u003e\n            \u003cdiv class=\"row-key\"\u003eSDS 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            \u003cdiv class=\"row-value\"\u003e44243485\u003c\/div\u003e\n            \u003c\/div\u003e\n            \n\n            \n                \u003cdiv class=\"section-row\"\u003e\n                    \u003cdiv class=\"row-key\"\u003eIUPAC Name\u003c\/div\u003e\n                    \u003cdiv class=\"row-value\"\u003e(2S,3aS,6aS)-1-\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003e3-\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003e(2S,3aS,6aS)-2-\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003e\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003e2,6-di(propan-2-yl)phenyl\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003ecarbamoyl\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003e-1-oxido-3,3a,4,5,6,6a-hexahydro-2H-cyclopenta\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003eb\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003epyrrol-1-ium-1-yl\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003epropyl\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003e-N-\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003e2,6-di(propan-2-yl)phenyl\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003e-1-oxido-3,3a,4,5,6,6a-hexahydro-2H-cyclopenta\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003eb\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003epyrrol-1-ium-2-carboxamide\u003c\/div\u003e\n                \u003c\/div\u003e\n            \n\n            \n                \u003cdiv class=\"section-row\"\u003e\n                    \u003cdiv class=\"row-key\"\u003eInChI Key\u003c\/div\u003e\n                    \u003cdiv class=\"row-value\"\u003eAUXDXJFVTHFWLI-KQALKABTSA-N\u003c\/div\u003e\n                \u003c\/div\u003e\n            \n\n            \n                \u003cdiv class=\"section-row\"\u003e\n                    \u003cdiv class=\"row-key\"\u003eSMILES\u003c\/div\u003e\n                    \u003cdiv class=\"row-value\"\u003eCC(C)C1=C(C(=CC=C1)C(C)C)NC(=O)\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003eC@@H\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003e2C\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003eC@@H\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003e3CCC\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003eC@@H\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003e3\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003eN+\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003e2(CCC\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003eN+\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003e4(\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003eC@H\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003e5CCC\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003eC@H\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003e5C\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003eC@H\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003e4C(=O)NC6=C(C=CC=C6C(C)C)C(C)C)\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003eO-\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003e)\u003cspan class=\"l_bracket\"\u003e\u003c\/span\u003eO-\u003cspan class=\"r_bracket\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n                \u003c\/div\u003e\n            \n        \u003c\/div\u003e\n    \n\n    \u003c!-- Properties --\u003e\n    \n\n    \u003c!-- Safety Info --\u003e\n    \n        \u003ch2 class=\"section-header\"\u003eSafety Information\u003c\/h2\u003e\n        \u003cdiv class=\"section-content\"\u003e\n            \n\n            \n\n            \n\n            \n                \u003cdiv class=\"section-row\"\u003e\n                    \u003cdiv class=\"row-key\"\u003ePrecautionary Statement\u003c\/div\u003e\n                    \u003cdiv class=\"row-value\"\u003e\n                        \u003cdiv class=\"hazard-grid\"\u003e\n                            \n                                \u003cdiv\u003eP262\u003c\/div\u003e\n                            \n                        \u003c\/div\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n            \n\n            \n\n            \n\n            \n\n            \n\n            \n                \u003cdiv class=\"section-row\"\u003e\n                    \u003cdiv class=\"row-key\"\u003eStorage Condition\u003c\/div\u003e\n                    \u003cdiv class=\"row-value\"\u003e\n                        Store at 0℃\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n            \n        \u003c\/div\u003e\n    \n\n    \u003c!-- Application  --\u003e\n    \n    \u003ch2 class=\"section-header\"\u003eApplication\u003c\/h2\u003e\n    \u003cdiv class=\"html-area\"\u003e\n        \u003ch2\u003eProduct Introduction\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eN,N'-Dioxides (Bis-N-oxide Compounds)\u003c\/strong\u003e are an ideal class of \u003cstrong\u003eligands and catalysts for asymmetric synthesis\u003c\/strong\u003e. These chiral N,N'-dioxide compounds overcome the traditional requirement for highly rigid ligand frameworks. Much like a pair of \u003cstrong\u003enunchaku\u003c\/strong\u003e, they combine rigidity and flexibility, allowing precise control over how reactants approach and interact during a chemical reaction. By directing the orientation and encounter of reaction partners, these ligands help ensure that chemical bonds are formed in the desired manner, resulting in high catalytic efficiency and excellent enantioselectivity.\u003c\/p\u003e\n\u003ch2\u003eApplication:\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAsymmetric Catalysis：\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003e1、Roskamp–Feng reaction\u003c\/span\u003e\u003c\/span\u003e\u003csup\u003e1\u003c\/sup\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003e2、Electrophilic addition of α-diazoesters to ketones\u003c\/span\u003e\u003c\/span\u003e\u003csup\u003e2\u003c\/sup\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003e3、ring expansion of isatins with α-diazoesters\u003c\/span\u003e\u003c\/span\u003e\u003csup\u003e3\u003c\/sup\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003e4、Baeyer–Villiger oxidation\u003c\/span\u003e\u003c\/span\u003e\u003cb\u003e\u003cstrong\u003e8\u003c\/strong\u003e\u003c\/b\u003e\u003csup\u003e4\u003c\/sup\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003e5、inverse electron-demand aza-Diels–Alder reaction\u003c\/span\u003e\u003c\/span\u003e\u003csup\u003e5\u003c\/sup\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003e6、reduction reaction\u003c\/span\u003e\u003c\/span\u003e\u003csup\u003e6\u003c\/sup\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003e7、\u003c\/span\u003e\u003c\/span\u003e\u003cb\u003e\u003cstrong\u003e8 + 2\u003c\/strong\u003e\u003c\/b\u003e\u003cspan\u003e\u003cspan\u003e cycloaddition\u003c\/span\u003e\u003c\/span\u003e\u003csup\u003e7\u003c\/sup\u003e\u003cspan\u003e\u003cspan\u003e;\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ch2\u003eRelated articles\u003c\/h2\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca target=\"_blank\" href=\"https:\/\/www.jk-sci.com\/blogs\/innoportal\/fengs-chiral-nitroxide-ligand-can-efficiently-realize-more-than-50-asymmetric-catalytic-reactions\"\u003eFeng's chiral nitroxide ligand: can efficiently realize more than 50 asymmetric catalytic reactions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca target=\"_blank\" href=\"https:\/\/www.jk-sci.com\/blogs\/innoportal\/scientific-research-achievements-of-academician-feng-xiaoming-fengs-chiral-dinitroxide-ligand-catalyst-strong-broad-spectrum-and-good-stereoselectivity\"\u003eChiral Dinitroxide Catalysts: A Breakthrough in Asymmetric Synthesis by Professor Feng Xiaoming\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n    \u003c\/div\u003e\n    \n\n    \u003c!-- Faq --\u003e\n    \n    \u003ch2 class=\"section-header\"\u003eFAQ\u003c\/h2\u003e\n    \u003cdiv class=\"html-area\"\u003e\n        \u003cp\u003e\u003cstrong\u003eWhat is NO-Feng-PDiPPRa used for?\u003c\/strong\u003e\u003cbr\u003eNO-Feng-PDiPPRa is primarily used as a \u003cstrong\u003echiral N,N'-dioxide ligand\u003c\/strong\u003e for asymmetric catalysis and enantioselective synthesis. It is widely applied in Lewis acid–catalyzed stereoselective organic transformations.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the alternative name of NO-Feng-PDiPPRa?\u003c\/strong\u003e\u003cbr\u003eNO-Feng-PDiPPRa is commonly referred to as \u003cstrong\u003eL-RaPr₂\u003c\/strong\u003e, a member of the Feng chiral ligand family.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat type of ligand is NO-Feng-PDiPPRa?\u003c\/strong\u003e\u003cbr\u003eIt belongs to the \u003cstrong\u003eFeng Chiral N,N'-Dioxide Ligand Series\u003c\/strong\u003e, a class of privileged ligands known for strong metal coordination ability and excellent stereochemical control.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich catalytic reactions can benefit from this ligand?\u003c\/strong\u003e\u003cbr\u003eNO-Feng-PDiPPRa has been successfully applied in a wide range of asymmetric transformations, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRoskamp–Feng reaction\u003c\/li\u003e\n\u003cli\u003eα-Diazoester addition reactions\u003c\/li\u003e\n\u003cli\u003eRing expansion of isatins\u003c\/li\u003e\n\u003cli\u003eBaeyer–Villiger oxidation\u003c\/li\u003e\n\u003cli\u003eAza-Diels–Alder reactions\u003c\/li\u003e\n\u003cli\u003eReduction reactions\u003c\/li\u003e\n\u003cli\u003eCycloaddition reactions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese reactions benefit from the well-defined chiral environment formed by the ligand–metal complex.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich metal catalysts are commonly used with NO-Feng-PDiPPRa?\u003c\/strong\u003e\u003cbr\u003eThe ligand can coordinate with multiple Lewis acidic metals, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSc(III)\u003c\/li\u003e\n\u003cli\u003eCu(II)\u003c\/li\u003e\n\u003cli\u003eFe(II\/III)\u003c\/li\u003e\n\u003cli\u003eMg(II)\u003c\/li\u003e\n\u003cli\u003eNi(II)\u003c\/li\u003e\n\u003cli\u003eYb(III)\u003c\/li\u003e\n\u003cli\u003eOther rare-earth metal catalysts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese complexes are widely used in asymmetric synthesis and catalyst development.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan NO-Feng-PDiPPRa be used for pharmaceutical synthesis research?\u003c\/strong\u003e\u003cbr\u003eYes. It is widely used in the synthesis of \u003cstrong\u003eenantioenriched pharmaceutical intermediates, natural products, and biologically active molecules\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy are Feng ligands important in asymmetric catalysis?\u003c\/strong\u003e\u003cbr\u003eFeng ligands combine rigidity and flexibility within a single framework (often described as “nunchaku-like”), enabling precise control of substrate orientation and transition-state organization, leading to high enantioselectivity.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the advantages of NO-Feng-PDiPPRa compared with conventional ligands?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh enantioselectivity\u003c\/li\u003e\n\u003cli\u003eStrong metal coordination ability\u003c\/li\u003e\n\u003cli\u003eBroad substrate compatibility\u003c\/li\u003e\n\u003cli\u003eExcellent catalytic efficiency\u003c\/li\u003e\n\u003cli\u003eTunable steric environment\u003c\/li\u003e\n\u003cli\u003eWide application in asymmetric catalysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat makes L-RaPr₂ different from other Feng ligands?\u003c\/strong\u003e\u003cbr\u003eL-RaPr₂ contains a \u003cstrong\u003e2,6-diisopropylphenyl-substituted structural motif\u003c\/strong\u003e, which provides strong steric shielding around the catalytic center, potentially improving selectivity in asymmetric reactions.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan NO-Feng-PDiPPRa be used in Lewis acid catalysis?\u003c\/strong\u003e\u003cbr\u003eYes. It is designed to form highly active chiral Lewis acid complexes and is widely used in asymmetric catalytic transformations.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow should NO-Feng-PDiPPRa be stored?\u003c\/strong\u003e\u003cbr\u003eIt is typically recommended to store the compound in a \u003cstrong\u003esealed, dry environment at low temperature (0–8°C or below)\u003c\/strong\u003e to maintain stability.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes catalytic performance depend on reaction conditions?\u003c\/strong\u003e\u003cbr\u003eYes. Parameters such as \u003cstrong\u003emetal source, solvent, temperature, substrate structure, and catalyst loading\u003c\/strong\u003e significantly affect reaction yield and enantioselectivity.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \n\n    \u003c!-- References --\u003e\n    \n    \u003ch2 class=\"section-header\"\u003eReferences\u003c\/h2\u003e\n    \u003cdiv class=\"section-content\"\u003e\n        \n            \u003cdiv class=\"reference-item\"\u003e\n                \n                    \n                    \u003ca href=\"https:\/\/science-of-synthesis.thieme.com\/app\/text\/?id=SD-137-00148\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\n                        \u003ch3\u003e[3 + 2]Cycloadditions of 2,3-Dihydro-1,4-dioxin\u003c\/h3\u003e\n                    \u003c\/a\u003e\n                    \n                \n\n                \n                \u003cdiv class=\"publication-item\"\u003ePublication Name: Science of Synthesis\u003c\/div\u003e\n                \n\n                \n                \u003cdiv class=\"publication-item\"\u003ePublication Date: 2021\u003c\/div\u003e\n                \n\n                \n            \u003c\/div\u003e\n        \n    \u003c\/div\u003e\n    \n\n\n    \u003cscript\u003e\n        const coaSearchButton = document.getElementById('coa-search-button');\n        coaSearchButton.addEventListener('click', async function() {\n            const coaLinkInput = document.getElementById('coa-link-input');\n            const spinElement = document.querySelector('.search-spin');\n            const notFoundElement = document.querySelector('.coa-not-found');\n\n            const lot = coaLinkInput.value.trim().toUpperCase();\n            if (lot.length \u003e 0) {\n                spinElement.style.display = 'block';\n                notFoundElement.style.display = 'none';\n\n                const url = `https:\/\/web.jkchemical.com\/partial\/coaFileLotNumber\/${lot}`;\n                await fetch(url).then((res) =\u003e {\n                    if (res.status === 200) {\n                        window.open(url, '_blank');\n                    } else {\n                        notFoundElement.style.display = 'block';\n                    }\n                }).finally(() =\u003e {\n                    spinElement.style.display = 'none';\n                });\n            }\n        });\n    \u003c\/script\u003e\n\n\n\u003c\/div\u003e","brand":"J\u0026K Chemical","offers":[{"title":"1×250MG","offer_id":45420958220478,"sku":"JK1595287_250_MG","price":257.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0506\/0005\/0878\/files\/1595287.png?v=1781687561","url":"https:\/\/www.jk-sci.com\/products\/a011595287","provider":"J\u0026K Scientific LLC","version":"1.0","type":"link"}