Enantioselective Cascade Formal Reductive Insertion of Allylic Alcohols into the C(O)–C Bond of 1,3-Diketones: Ready Access to Synthetically Valuable 3-Alkylpentanol Units
An unprecedented cascade reaction combining dual iron–amine-catalyzed enantioselectivefunctionalization of allylicalcohols and chemoselective acyl transfer is presented. It allows, from diketones and allylicalcohols, preparation of efficiently functionalized γ-chiral alcohols in up to 96% yield and 96:4 er. The interest of this redox-, atom-, and step-economomical approach was further demonstrated
Pd-catalyzed regio- and enantioselectiveallylicsubstitution of hydroxyl-containing allylic carbonates with 2-pyridones has been developed. By using a palladium complex in situ generated from Pd2(dba)3·CHCl3 and phosphoramidite L2 as a ligand, the process allowed rapid access to N-substituted 2-pyridones with complete chemo- and regioselectivities and good to high enantioselectivities.
申请人:The United States of America as represented by the Secretary of
公开号:US04024164A1
公开(公告)日:1977-05-17
New mixed esters of diols having one hydroxyl group esterified with benzoic acid and the other esterified with various saturated or unsaturated aliphatic acids or aromatic acids other than benzoic are found to have antimicrobial activity against several pathogenic microorganisms, and to have properties making them useful as antimicrobial agents.
申请人:The United States of America as represented by the Secretary of
公开号:US04074058A1
公开(公告)日:1978-02-14
New mixed esters of diols having one hydroxyl group esterified with benzoic acid and the other esterified with various saturated or unsaturated aliphatic acids or aromatic acids other than benzoic are found to have antimicrobial activity against several pathogenic microorganisms, and to have properties making them useful as antimicrobial agents.
申请人:The United States of America as represented by the Secretary of
公开号:US04107192A1
公开(公告)日:1978-08-15
New mixed esters of diols having one hydroxyl group esterified with benzoic acid and the other esterified with various saturated or unsaturated aliphatic acids or aromatic acids other than benzoic are found to have antimicrobial activity against several pathogenic microorganisms, and to have properties making them useful as antimicrobial agents.