Reactivity and diastereoselectivity of Michael additions of amines to achiral α,β-unsaturated thioamides
作者:Jacek G Sośnicki、Tadeusz S Jagodziński、Poul Erik Hansen
DOI:10.1016/s0040-4020(01)00849-3
日期:2001.10
aliphatic amines add to acyclic and cyclic α,β-unsaturated thioamides yielding β-amino-functionalized derivatives. In the case of cyclic acceptors, the formation of both kinetic and thermodynamically controlled products is observed. Tailoring of cis or trans products is thus possible. A mechanism for the addition to cyclic acceptors is proposed and evidence presented to support it. Ease of addition is studied
杂环脂族胺加到无环和环状的α,β-不饱和硫代酰胺上,生成β-氨基官能化的衍生物。在环状受体的情况下,观察到动力学和热力学控制产物的形成。因此可以定制顺式或反式产物。提出了一种添加环状受体的机制,并提供了证据来支持它。关于受体的结构,研究了加成的容易性。