{"product_id":"a012699021","title":"NO-Feng-PBnPPi, L-PiBn, 95% | 1085279-20-4","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-PBnPPi, L-PiBn, 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\"\u003e2699021\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\"\u003e1085279-20-4\u003c\/div\u003e\n        \u003c\/div\u003e\n        \n\n        \n        \u003cdiv class=\"section-row\"\u003e\n            \u003cdiv class=\"row-key\"\u003eMolecular Formula\u003c\/div\u003e\n            \u003cdiv class=\"row-value\"\u003eC29H40N4O4\u003c\/div\u003e\n        \u003c\/div\u003e\n        \n\n        \n        \u003cdiv class=\"section-row\"\u003e\n            \u003cdiv class=\"row-key\"\u003eMolecular Weight\u003c\/div\u003e\n            \u003cdiv class=\"row-value\"\u003e508.65\u003c\/div\u003e\n        \u003c\/div\u003e\n        \n\n        \n        \u003cdiv class=\"section-row\"\u003e\n            \u003cdiv class=\"row-key\"\u003eSDS Document\u003c\/div\u003e\n            \u003cdiv class=\"row-value\"\u003e\n                \u003ca href=\"https:\/\/web.jkchemical.com\/partial\/productMsdsFileByProductId\/EN\/25288\/1\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eView\/Download\u003c\/a\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n        \n\n        \u003cdiv class=\"section-row\"\u003e\n            \u003cdiv class=\"row-key\"\u003eCertificate of Analysis (COA)​\u003c\/div\u003e\n            \u003cdiv class=\"row-value\"\u003e\n          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stop-opacity=\"0\"\u003e\u003c\/stop\u003e\u003c\/radialgradient\u003e\u003ccircle transform-origin=\"center\" fill=\"none\" stroke=\"url(#a7)\" stroke-width=\"15\" stroke-linecap=\"round\" stroke-dasharray=\"200 1000\" stroke-dashoffset=\"0\" cx=\"100\" cy=\"100\" r=\"70\"\u003e\u003canimatetransform type=\"rotate\" attributename=\"transform\" calcmode=\"spline\" dur=\"2\" values=\"360;0\" keytimes=\"0;1\" keysplines=\"0 0 1 1\" repeatcount=\"indefinite\"\u003e\u003c\/animatetransform\u003e\u003c\/circle\u003e\u003ccircle transform-origin=\"center\" fill=\"none\" opacity=\".2\" stroke=\"#FFFFFF\" stroke-width=\"15\" stroke-linecap=\"round\" cx=\"100\" cy=\"100\" r=\"70\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\n                            \u003cspan\u003eSearch\u003c\/span\u003e\n                        \u003c\/div\u003e\n                    \u003c\/button\u003e\n                    \u003cspan class=\"coa-not-found\"\u003eCOA not found\u003c\/span\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n    \u003c\/div\u003e\n\n    \u003c!-- General Info --\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\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                        Freezer -20℃\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\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-PBnPPi used for?\u003c\/strong\u003e\u003cbr\u003eNO-Feng-PBnPPi is primarily used as a \u003cstrong\u003echiral N,N'-dioxide ligand\u003c\/strong\u003e for asymmetric catalysis and enantioselective synthesis. It is widely employed in the construction of chiral metal catalyst systems for stereoselective organic transformations.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the alternative name of NO-Feng-PBnPPi?\u003c\/strong\u003e\u003cbr\u003eNO-Feng-PBnPPi is commonly referred to as \u003cstrong\u003eL-PiBn\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-PBnPPi?\u003c\/strong\u003e\u003cbr\u003eIt belongs to the \u003cstrong\u003eFeng Chiral N,N'-Dioxide Ligand Series\u003c\/strong\u003e, a class of privileged ligands widely recognized for their excellent stereochemical control in asymmetric catalytic reactions.\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-PBnPPi can be applied in a variety of asymmetric transformations, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAsymmetric Michael reactions\u003c\/li\u003e\n\u003cli\u003eMannich reactions\u003c\/li\u003e\n\u003cli\u003eAldol reactions\u003c\/li\u003e\n\u003cli\u003eCycloaddition reactions\u003c\/li\u003e\n\u003cli\u003eLewis acid catalysis\u003c\/li\u003e\n\u003cli\u003eEnantioselective carbon–carbon bond formation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFeng ligand systems have been reported to support more than 50 types of asymmetric catalytic reactions.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich metal catalysts are commonly used with NO-Feng-PBnPPi?\u003c\/strong\u003e\u003cbr\u003eThe ligand can coordinate with a variety of 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 metal–ligand 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-PBnPPi be used for pharmaceutical synthesis research?\u003c\/strong\u003e\u003cbr\u003eYes. Chiral N,N'-dioxide ligands are frequently utilized in the synthesis of \u003cstrong\u003eenantioenriched pharmaceutical intermediates, natural products, and biologically active compounds\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 \u003cstrong\u003erigidity and flexibility\u003c\/strong\u003e within a single molecular framework, enabling precise control over substrate orientation and transition-state organization. This often results in excellent catalytic activity and high enantioselectivity.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the advantages of NO-Feng-PBnPPi compared with conventional chiral 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\u003eGood structural tunability\u003c\/li\u003e\n\u003cli\u003eWide applicability in asymmetric transformations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat makes L-PiBn different from other Feng ligands?\u003c\/strong\u003e\u003cbr\u003eL-PiBn contains a \u003cstrong\u003ebenzyl-substituted aromatic framework\u003c\/strong\u003e, which can alter the steric environment around the catalytic center and may provide distinct selectivity and substrate compatibility compared with other Feng ligand derivatives.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan NO-Feng-PBnPPi be used in Lewis acid catalysis?\u003c\/strong\u003e\u003cbr\u003eYes. It is specifically designed to form highly active chiral Lewis acid complexes with various metal ions and has been widely applied in asymmetric catalytic transformations.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow should NO-Feng-PBnPPi be stored?\u003c\/strong\u003e\u003cbr\u003eThe product is typically stored at \u003cstrong\u003e−20°C under dry, light-protected, and sealed conditions\u003c\/strong\u003e to maintain long-term 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. Factors such as \u003cstrong\u003emetal source, solvent, temperature, substrate structure, catalyst loading, and reaction time\u003c\/strong\u003e can significantly influence catalytic activity and enantioselectivity.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \n\n    \u003c!-- References --\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":45462116794558,"sku":"JK2699021_250_MG","price":487.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0506\/0005\/0878\/files\/2699021.png?v=1781683983","url":"https:\/\/www.jk-sci.com\/products\/a012699021","provider":"J\u0026K Scientific LLC","version":"1.0","type":"link"}