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Sku 15-0067-250MG
STREM
| Technical Notes: 1. Biaryl bisphosphine ligand with narrow dihedral angle. The DTBM SEGPHOS® ligand, as the ruthenium complex, gives superior enantioselectivity and diaste reoselectivity through dynamic kinetic resolution in the asymmetric hydrogenation of a-substituted-ß-ketoesters useful in the synthesis of carbapenum antibiotics. 2. With rhodium, preferential enantioselective hydrogenation of more reactive olefin of extended enone structure . 3.Rhodium catalyzed chemo-, regio, and entantioselective [2 + 2 + 2] cycloaddition of alkynes with isocyanates . 4.With copper, enantioselective cross Aldol-type reaction of acetonitrile.4 5.With copper, enantioselective vinylsilane alkenylation of aldehydes .5 6.Gold carbene mediated stereoselective cyclopropanation of propargyl esters. 7.With copper, enantioselective 1,2 -reduction of ketones, and 1 ,4-reduction of a a,ß-usaturatedesters. 8.With copper, catalytic enantioselective Mannich-type reaction. 9.Enantioselective fluorination of b ß-keto esters, tert- butoxycarbonyl lactones and lactmes with Sodeoka's Pd-aqua complex and a fluorinating reagent. 10.Rh-catalyzed intramolecular olefin or carbonyl hydroacylation. 10 11.Pd-catalyzed y-arylation of ß,y-unsaturated ketones. 12Involved in numerous conjugate alkynylation, and ring-opening alkynylation of azabenzonorbornadienes. 13.Involved in asymmetric hydroamination of bicyclic alkenes/die nes, 13a diamination of conjugated dienes,sb and hydroalkoxylation/hydrosulfenylation of allenes.se 14.Used in cycloaddition reactions such as 1,3-dipolar cycloaddition of azomethine ylides, and Au-catalyzed [2 +2] cycoaddition of allenes. 15.Asymmetric conjugate addition of nitroalkanes to a,ß-usaturated thioamides. 16.Asymmetric synthesis of isothiazoles through Cu catalyzed conjugate addition of allyl cyanide to a,ß-usaturated thioamides . 17.Asymmetric Ag-catalyzed cycloadditions." 18.Rhodium-catalyzed c c bond cleavage to generate acyclic, asymmetric quaternary centers. 19.Iridium-catalyzed intermolecular hydroamidation of olefins . 20.Iridium-catalyzed intermolecular hydroamidation of olefins. 21.CuH-catalyzed asymmetric hydroamination of olefins. |
