Chiral Helicenoid Diarylethene with Highly Diastereoselective Photocyclization<sup>1</sup>
作者:Yutaka Tani、Takashi Ubukata、Yayoi Yokoyama、Yasushi Yokoyama
DOI:10.1021/jo062022v
日期:2007.3.1
A novel photochromic helicenoid diarylethene (R)-1-[1-(1-methoxymethoxyethyl)-2-naphtho[2,1-b]thienyl]-2-(2,4,5-trimethyl-3-thienyl)hexafluorocyclopentene was synthesized enantioselectively. It showed highly diastereoselective photocyclization (90% de) and a large change (950°) in the specific optical rotation value at 633 nm upon UV light irradiation in ethyl acetate.
一种新型的光致变色类螺旋二芳基二芳基乙烯(R)-1- [1-(1-甲氧基甲氧基乙基)-2-萘并[ 2,1 - b ]噻吩基] -2-(2,4,5-三甲基-3-噻吩基)六氟环戊烯是对映选择性地合成。当在乙酸乙酯中照射紫外线时,它显示出非对映选择性光环化作用(90%de)和比旋光度值在633 nm处有较大变化(950°)。