Conversion of 4-Oxoproline Esters to 4-Substituted Pyrrole-2-carboxylic Acid Esters
作者:Yasushi Arakawa、Naomi Yagi、Yukimi Arakawa、Ken-ichi Tanaka、Shigeyuki Yoshifuji
DOI:10.1248/cpb.57.167
日期:——
The Grignard, Wittig, Tebbe, Horner–Emmons, and Reformatsky reactions of the 4-oxoproline esters gave the corresponding 4-alylated or 4-alkylidenated products, respectively. The products were properly treated with bases to cause aromatization, giving 4-substituted pyrrole-2-carboxylic acid esters such as methyl 4-methylpyrrole-2-carboxylate, which is a trail pheromone of Atta texana.
4-氧代脯氨酸酯的格氏反应、维蒂希反应、特贝反应、霍纳-埃蒙斯反应和 Reformatsky 反应分别产生了相应的 4-酰化或 4-亚烷基化产物。这些产物经碱适当处理后会发生芳香化反应,产生 4-取代的吡咯-2-羧酸酯,如 4-甲基吡咯-2-羧酸甲酯,这是 Atta texana 的一种踪迹信息素。