Evidence for a Transition State Model Compound of In-Plane Vinylic S<sub>N</sub>2 Reaction
作者:Torahiko Yamaguchi、Yohsuke Yamamoto、Yoshihisa Fujiwara、Yoshifumi Tanimoto
DOI:10.1021/ol050961o
日期:2005.6.1
compound of an in-plane vinylic S(N)2 reaction, vinyl bromide 6 bearing a newly synthesized tridentate ligand derived from 1,8-dimethoxythioxanthen-9-one (5) was prepared as a precursor. Although irradiation of 6 gave demethylated benzofuran 12, a transient broad peak which indicates formation of the desired transition state model compound was observed in the laser flash photolytic study.
[反应:请参见文本]为了分离面内乙烯基S(N)2反应的过渡态模型化合物,将带有新合成的衍生自1,8-二甲氧基噻吨9-9-(5)的三齿配体的乙烯基溴化物6分离出来。准备作为前体。尽管辐照6得到脱甲基的苯并呋喃12,但在激光闪光光解研究中观察到一个短暂的宽峰,表明形成了所需的过渡态模型化合物。