Copper-catalyzed C–C bond-forming transformation of CO<sub>2</sub> to alcohol oxidation level: selective synthesis of homoallylic alcohols from allenes, CO<sub>2</sub>, and hydrosilanes
A highly selective carbon-carbon bond-forming transformation of carbon dioxide (CO2) to the alcoholoxidation level has been disclosed. By employing a copper/bisphosphine catalyst system and hydrosilanes as the mild and...
Compositions and methods for preparing β,γ-unsaturated acids
申请人:California Institute of Technology
公开号:US10336678B2
公开(公告)日:2019-07-02
The present disclosure provides methods for enantioselective synthesis of acyclic α-quaternary carboxylic acid derivatives via iridium-catalyzed allylic alkylation.
本公开提供了通过铱催化烯丙基烷基化技术对映选择性合成无环 α-季羧酸衍生物的方法。
Regioselective Alkylation of Lithium Dienediolates of α,β-Unsaturated Carboxylic Acids
作者:Eva M. Brun、Salvador Gil、Ramón Mestres、Margarita Parra
DOI:10.1055/s-2000-6323
日期:——
Lithium carboxylic acids dienediolates are regioselectively alkylated at the α-carbon by reaction with tosylates derived from both primary and secondary alcohols. Both regio- and diastereoselectivity are improved when compared with those obtained in the corresponding alkylation with alkyl halides.