作者:Li-Xiong Shao、Min Shi
DOI:10.1002/ejoc.200300515
日期:2004.1
Treatment of methylenecyclopropanes (MCPs) with DIAD or DEAD in MeCN under mild conditions in the presence of Lewis acid Zr(OTf)(4) gave the cyclobutanone ring-expansion products in good to high yields based on the employed DIAD or DEAD. From a deuterium labeling experiment, the oxygen atom is derived from ambient water. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004).
在路易斯酸 Zr(OTf)(4) 存在下,在温和条件下在 MeCN 中用 DIAD 或 DEAD 处理亚甲基环丙烷 (MCP),基于所用的 DIAD 或 DEAD,环丁酮扩环产品的产率从高到高。从氘标记实验中,氧原子来自环境水。((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)。