Trialkylborane-Mediated Propargylation of Aldehydes Using γ-Stannylated Propargyl Acetates
作者:Yoshikazu Horino、Miki Murakami、Mayo Ishibashi、Jun Hee Lee、Airi Watanabe、Rio Matsumoto、Hitoshi Abe
DOI:10.1021/acs.orglett.9b03710
日期:2019.12.6
A transition-metal-free three-component process that combines aldehydes, 3-(tributylstannyl)propargyl acetates formed in situ from readily available propargyl acetates, and trialkylboranes provides access to a range of 1,2,4-trisubstituted homopropargylic alcohols. The addition of diisopropylamine plays a crucial role in the selective formation of homopropargylic alcohols. Importantly, this methodology
一种不含过渡金属的三组分方法,该方法将醛,由容易获得的乙酸炔丙基酯原位形成的3-(三丁基锡烷基)炔丙基乙酸酯和三烷基硼烷相结合,可提供各种1,2,4-三取代的均炔丙基醇。二异丙基胺的添加在高炔丙醇的选择性形成中起关键作用。重要的是,该方法可以扩展到从乙酸炔丙基酯开始的单烧瓶反应序列。