DBU/Et<sub>3</sub>N-Mediated Sequential Homoaldol-Lactonization-Alkylation Reactions of Ethyl Pyruvate: One-Pot Synthesis of O-Protected Isotetronic Acids
作者:Quanrui Wang、Yuzhu Sun、Huansheng Chen、Zhiming Li、Fenggang Tao
DOI:10.1055/s-2008-1032145
日期:2008.2
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。