作者:Hermann K. Hombrecher、Gaby Horter
DOI:10.1055/s-1990-26883
日期:——
The reaction of ethyl glycinate hydrochloride (1) with 1,3-dicarbonyl compounds 2a-g in presence of triethylamine leads to the formation of ethyl N-(3-oxo-1-alkenyl)glycinates 3a-g. These compounds are easily converted to the pyrroles 4a-g by base-catalyzed intramolecular Knoevenagel condensation.
甘氨酸乙酯盐酸盐(1)与 1,3-二羰基化合物 2a-g 在三乙胺存在下发生反应,生成 N-(3-氧代-1-烯基)甘氨酸乙酯 3a-g。通过碱催化的分子内克诺文纳格尔缩合作用,这些化合物很容易转化为吡咯 4a-g。