The sequential homoaldol-lactonization-alkylation/acylation reactions of ethyl pyruvate with a variety of halides were achieved by using DBU along with Et3N as the base. The protocol provides an expedient one-pot synthesis of O-protected isotetronic acid derivatives. The high-yielding synthesis of an unprotected isotetronic acid is also described.
以
DBU 和 Et3N 为碱基,实现了
丙酮酸乙酯与多种卤化物的同醛-内酯化-烷基化/酰化反应。该方案提供了一种便捷的 O 保护异
四氢呋喃衍
生物的单锅合成方法。此外,还介绍了一种未受保护的异四
壬酸的高产合成方法。