Département de Chimie , Université de Sherbrooke , 2500 Boulevard Université , Sherbrooke , Quebec J1K 2R1 , Canada.
J Org Chem. 2018 May 18;83(10):5609-5618. doi: 10.1021/acs.joc.8b00613. Epub 2018 Apr 30.
The (4+1)-annulation of dimethoxycarbene with readily accessible α,β-unsaturated carbonyls gives cyclic orthoesters, which can then be converted in just a few steps to other O-heterocycles, including methoxyfurans, furanones, and furans.
偕二甲基卡宾与易得的α,β-不饱和羰基化合物的(4+1)-环加成反应生成环状原碳酸酯,然后只需几步就可以将其转化为其他 O-杂环化合物,包括甲氧基呋喃、呋喃酮和呋喃。