Chiral helicenoid diarylethene with large change in specific optical rotation by photochromism1, 2

…, Y Tani, K Miyake, Y Yokoyama

Index: Okuyama, Tomoyuki; Tani, Yutaka; Miyake, Kentaro; Yokoyama, Yasushi Journal of Organic Chemistry, 2007 , vol. 72, # 5 p. 1634 - 1638

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Citation Number: 71

Abstract

A diarylethene possessing one [4] thiaheterohelicene and one benzothiophene, the latter with a chiral methoxymethoxyethyl group on its C-3 position, was proved to work as a switch of specific optical rotation at a wavelength at which both colored and colorless forms have no absorption in solution. The difference of the specific optical rotation was 1300° between the open form and the photostationary state. The specific optical rotation of one of the ...