An enantioselective Friedel–Craftsalkylation of indoles with β,β-disubstituted nitroalkenes was developed by using a nickel(II) perchlorate–bisoxazoline complex as a catalyst. A range of nitroalkenes and indoles participated in this reaction, affording chiral indole compounds bearing all-carbon quaternary stereocenters in excellent yields and with moderate to good enantioselectivities (up to 80% ee)
Method for producing an optically active nitro compound
申请人:Carreira M. Erick
公开号:US20070037976A1
公开(公告)日:2007-02-15
An optically active nitro compound having two hydrogen atoms on its α-cabon atom and having β-asymmetric carbon atom can be produced by making α, β-unsaturated nitroolefin having a hydrogen atom on its α-cabon atom react with at least two organosilicon compounds having at lest one silicon-hydrogen bond in the molecule in the presence of an asymmetric copper complex, or react with an organosilicon compound having at least one silicon-hydrogen bond in the molecule in the presence of an asymmetric copper complex and water.
METHOD FOR PRODUCING AN OPTICALLY ACTIVE NITRO COMPOUND
申请人:Sumitomo Chemical Company, Limited
公开号:EP1641740B1
公开(公告)日:2009-03-25
US7790900B2
申请人:——
公开号:US7790900B2
公开(公告)日:2010-09-07
Organocatalyzed Enantioselective
Synthesis of Nitroalkanes Bearing All-Carbon Quaternary
Stereogenic Centers through Conjugate Addition of Acetone Cyanohydrin
作者:Mariafrancesca Fochi、Alfredo Ricci、Luca Bernardi、Francesco Fini
DOI:10.1055/s-2008-1078496
日期:——
The first organocatalyzed phase-transfer enantioselective conjugateaddition of cyanide ion derived from acetone cyanohydrin to β,β'-disubstituted nitroolefins is reported. The reaction leads to the efficient formation of nitroalkanes bearing an all-carbonquaternarystereogeniccenter in up to 72% ee.
报道了第一个有机催化相转移对映选择性共轭加成从丙酮氰醇衍生的氰化物离子到 β,β'-二取代硝基烯烃。该反应导致有效形成具有高达 72% ee 的全碳四元立体中心的硝基烷烃。