Triazolium Carbene Catalysts and Stereoselective Bond Forming Reactions Thereof
申请人:Rovis Tomislav
公开号:US20110224431A1
公开(公告)日:2011-09-15
Provided herein are triazolium carbine catalysts useful for asymmetric hydration, fluorination, and deuteration, and processes for their preparation. Also provided are synthetic reactions in which these catalysts are used, in particular, in stereoselective formation of carbon-chlorine, carbon-hydrogen, carbon-fluorine, and carbon-deuterium bonds.
An amine and bis(phenylsulfonyl)methane co-catalyzed hydrogen–deuterium exchange (HDE) method via a Michael-retro-Michael pathway for site-selective introduction of deuterium at the α-position of enals using D2O as a deuterium source has been achieved. The mild, operationally simple protocol allows for high yielding and high level deuterium incorporation (up to 99%) for structurally diverse aromatic-derived
一种胺和双(苯磺酰基)甲烷共催化氢-氘交换 (HDE) 方法,通过Michael-retro-Michael 途径,以 D 2 O 作为氘源,在烯醛的 α 位位点选择性引入氘。已达到。温和、操作简单的协议允许高产率和高水平的氘掺入(高达 99%),用于结构多样的芳烃衍生烯和二烯。
Selective Rhodium-Catalyzed Hydroformylation of Terminal Arylalkynes and Conjugated Enynes to (Poly)enals Enabled by a π-Acceptor Biphosphoramidite Ligand
Regioselective α-Deuteration of Michael Acceptors Mediated by Isopropylamine in D<sub>2</sub>O/AcOD
作者:Vinod G. Landge、Kendra K. Shrestha、Aaron J. Grant、Michael C. Young
DOI:10.1021/acs.orglett.0c03839
日期:2020.12.18
hydrogen/deuteriumexchange is an important method to access deuterated compounds for chemical and biological studies. Herein is reported the first method for the regioselective α-deuteration of enals and enones. The transformation features D2O and AcOD as deuterium sources and amines as organocatalysts. The deuteration strategy is scalable and works on enals with a variety of substituted arene or heterocycle
特定地点的氢/氘交换是获取用于化学和生物研究的氘化化合物的重要方法。本文报道了第一种对 enals 和 enones 进行区域选择性 α-氘化的方法。转化的特点是 D 2 O 和 AcOD 作为氘源,胺作为有机催化剂。氘化策略是可扩展的,适用于具有各种取代芳烃或杂环基序以及烯酮的 enal。该方法已应用于氘代药物前体的合成。