Sequential Palladium-Catalyzed Allylic Alkylation/retro-Dieckmann Fragmentation Strategy for the Synthesis of α-Substituted Acrylonitriles
作者:Tania Katsina、Sachi Prem Sharma、Roberto Buccafusca、Derek J. Quinn、Thomas S. Moody、Stellios Arseniyadis
DOI:10.1021/acs.orglett.9b03522
日期:2019.12.6
A straightforward synthesis of α-substituted acrylonitriles is described using 4-cyano-3-oxotetrahydro-thiophene (c-THT) as an acrylonitrile surrogate. This unprecedented two-step sequence featuring a palladium-catalyzed allylic alkylation (Pd-AA) and a retro-Dieckmann fragmentation provides a general entry into diversely substituted 1,4-dienes.
描述了使用4-氰基-3-氧代四氢噻吩(c-THT)作为丙烯腈替代物直接合成α-取代的丙烯腈的方法。这一前所未有的两步序列以钯催化的烯丙基烷基化(Pd-AA)和Dieckmann逆向断裂为特征,为进入各种取代的1,4-二烯提供了一般途径。