carboxylic acids with organoborons has been realized using either mono-protected aminoacid (MPAA) ligands or mono-protected aminoethyl amine (MPAAM) ligands. A diverse range of aryl- and vinyl-boron reagents can be used as coupling partners to provide chiral carboxylic acids. This reaction provides an alternative approach to the enantioselective synthesis of cyclopropanecarboxylic acids and cyclobutanecarboxylic
[EN] PD(II)-CATALYZED ENANTIOSELECTIVE C-H ARYLATION OF FREE CARBOXYLIC ACIDS<br/>[FR] ARYLATION C-H ÉNANTIOSÉLECTIVE CATALYSÉE PAR PD(II) D'ACIDES CARBOXYLIQUES LIBRES
申请人:SCRIPPS RESEARCH INST
公开号:WO2019204477A1
公开(公告)日:2019-10-24
The invention includes procedures for stereoselective β-arylation of carboxylic acids having a β-carbon atom. For example, stereoselective arylation procedures include the following reactions: (I)
Synthesis of Cyclopropanes via Hydrogen-Borrowing Catalysis
作者:Jessica L. Crompton、James R. Frost、Sam M. Rowe、Kirsten E. Christensen、Timothy J. Donohoe
DOI:10.1021/acs.orglett.3c01768
日期:2023.7.21
α-cyclopropanation of ketones using hydrogen borrowing (HB) catalysis is described. The transformation occurs via HB alkylation of a hindered ketone with subsequent intramolecular displacement of a pendant leaving group affording the cyclopropanated product. The leaving group can be installed in either the ketone or alcohol component of the HB system, giving access to α-cyclopropyl ketones via two complementary
Pd(II)-catalyzed enantioselective C—H arylation of free carboxylic acids
申请人:The Scripps Research Institute
公开号:US11021427B2
公开(公告)日:2021-06-01
The invention includes procedures for stereoselective β-acylation of carboxylic acids having a β-carbon atom. For example, stereoselective acylation procedures include the following reactions: (I)