InBr3–Et3N promoted alkynylation of aldehydes and N,O-acetals under mild conditions: facile and simple preparation of propargylic alcohols and amines
作者:Norio Sakai、Maki Hirasawa、Takeo Konakahara
DOI:10.1016/s0040-4039(03)00931-6
日期:2003.5
The use of a novel InBr3-Et3N reagent system to promote addition reactions of 1-alkynes not only with a variety of aromatic or bulky aliphatic aldehydes but also with N,O-acetals is described. The corresponding propargylic alcohols or amines are produced in good to excellent yields. (C) 2003 Elsevier Science Ltd. All rights reserved.
Facile and convenient synthesis of functionalized propargylic alcohols and amines: an InBr3–Et3N reagent system promotes the alkynylation of aldehydes and N,O- or N,S-acetals
The use of a novel InBr3-Et3N reagent system to promote the alkynylation of not only a variety of aromatic/heterocyclic or bulky aliphatic aldehydes but also N,O or N,S-acetals is described. The use of N-silyl-N,O-acetals and 1-alkynes could lead to the direct production of primary propargylic amines in good yields. (c) 2005 Elsevier Ltd. All rights reserved.
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