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ESI-MS Studies on Alcoholysis Mechanism of Electron-deficient Cyclopropane Derivatives

✍ Scribed by Min CHEN; Rong QIAN; Hai-Yan JIANG; Xiang ZHANG; Jing ZHOU; Wei-Guo CAO; Yin-Long GUO

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
177 KB
Volume
26
Category
Article
ISSN
0256-7660

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✦ Synopsis

Abstract

Electrospray ionization mass spectrometry (ESI‐MS) was utilized to perform monitoring of the intermediates in the reaction of 1,2,3‐trisubstituted electron‐deficient cyclopropane derivatives, cis‐1‐thien‐2′‐oyl‐2‐(p‐subustituted phenyl‐6,6‐dimethyl)‐5,7‐dioxaspiro[2.5]‐4,8‐octadiones, with methanol. Key intermediates, either cationic or protonated forms of neutral species, were intercepted and characterized by ESI‐MS and its tandem version (ESI‐MS/MS). Therefore, the mechanism of the ring‐opening process for electron‐deficient cyclopropane derivatives was fully confirmed by the intermediates monitored.

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