Application of optically active 1,2-diol monotosylates for synthesis of β-azido and β-amino alcohols with very high enantiomeric purity. Synthesis of enantiopure (R)-octopamine, (R)-tembamide and (R)-aegeline
The Stereoselective Oxidation of
<i>para</i>
‐Substituted Benzenes by a Cytochrome P450 Biocatalyst
作者:Rebecca R. Chao、Ian C.‐K. Lau、Tom Coleman、Luke R. Churchman、Stella A. Child、Joel H. Z. Lee、John B. Bruning、James J. De Voss、Stephen G. Bell
DOI:10.1002/chem.202102757
日期:2021.10.21
The efficient and sustainable hydroxylation, epoxidation and sulfoxidation of a wide range of benzene derivatives using an engineered variant of a bacterial cytochromeP450 enzyme is reported. These reactions were catalyzed with high activity, regioselectivity and total turnover number (up to 20,000) and in certain instances these reactions were achieved with high enanatioselectivity (up to 98 % ee
报道了使用细菌细胞色素 P450 酶的工程变体对各种苯衍生物进行有效和可持续的羟基化、环氧化和磺化氧化。这些反应以高活性、区域选择性和总转换数(高达 20,000)催化,在某些情况下,这些反应以高对映选择性(高达 98% ee .)实现。
Convenient synthesis of optically active 1,2-diol monosulfonates and terminal epoxides via oxazaborolidine-catalyzed asymmetric borane reduction of α-sulfonyloxy ketones
作者:Byung Tae Cho、Weon Ki Yang、Ok Kyung Choi
DOI:10.1039/b010155i
日期:——
A very convenient asymmetric synthesis of 1,2-diol monosulfonates and terminal epoxides with high optical purity via oxazaborolidine-catalyzedasymmetricboranereduction of α-sulfonyloxy ketones using N-ethyl-N-isopropylaniline–borane complex as borane carrier has been developed.
METHOD FOR THE PREPARATION OF OPTICALLY ACTIVE 2-SULFONYLOXY-1-PHENYLETHANOL DERIVATIVES
申请人:Lee Kee-In
公开号:US20100063317A1
公开(公告)日:2010-03-11
Optically active 2-sulfonyloxy-1-phenylethanol derivative of formula (II) can be prepared easily and selectively by the method of the present invention using an asymmetric reduction of an α-sulfonyloxy acetophenone compound with a rhodium catalyst having petamethylcyclopentadienyl group and a hydrogen donor, and the compound of formula (II) obtained in the inventive method exhibits a higher e.e. (enantiomer excess) value than that of the products in the conventional methods.