Synthesis and properties of photoacylotropic (2Z)-2-(N-acyl-N-arylaminomethylidene)benzo[b]thiophen-3(2H)-ones with a chiral migrating group
作者:V. P. Rybalkin、Ya. Yu. Vorob’eva、G. S. Borodkin、A. D. Dubonosov、A. V. Tsukanov、V. V. Tkachev、S. M. Aldoshin、V. A. Bren’、V. I. Minkin
DOI:10.1007/s11172-006-0191-5
日期:2005.12
New photochromic (2Z)-2-(N-acyl-N-arylaminomethylidene)benzo[b]thiophen-3(2H)-ones containing L-amino acid derivatives as migrating groups were synthesized. Light irradiation of their solutions at 436 nm leads to the photoinduced acylotropic rearrangement N → O accompanied by migration of the chiral fragment. The bulky N-acyl group causes steric strain thus destabilizing the amide form of compounds
合成了含有 L-氨基酸衍生物作为迁移基团的新型光致变色 (2Z)-2-(N-酰基-N-芳基氨基亚甲基)苯并 [b] 噻吩-3(2H)-one。他们的溶液在 436 nm 的光照射导致光诱导的非变性重排 N → O 伴随着手性片段的迁移。庞大的 N-酰基会导致空间应变,从而使化合物的酰胺形式不稳定并促进光重排。