Spectrometric and chemical studies of 5-acyl- and 5-nitroso-2-(N,N-disubstituted amino)thiazoles
作者:Timothy N. Birkinshaw、G. Denis Meakins、Simon J. Plackett
DOI:10.1039/p19880002209
日期:——
The conformational preferences of 2-(N,N-disubstituted amino)thiazoles having a 4-substituent (R1) and a 5-acyl group (R2CO) have been established by i.r. spectrometry and a crystallographic examination. In solution the compounds with R2= aryl and R1= Me or aryl exist predominantly or entirely in the carbonyl O,S-anti arrangement; for those with R1= aryl and R2= Me the syn rotamer is the main form
已经通过红外光谱法和晶体学检查确定了具有4-取代基(R 1)和5-酰基(R 2 CO)的2-(N,N-二取代氨基)噻唑的构象偏好。与溶液中的R中的化合物2 =芳基和R 1 = Me或芳基主要或完全存在于羰基O,S -抗布置; 对于那些具有R 1 =芳基和R 2 = Me的化合物,顺式旋转异构体是主要形式,但存在少量(约15%)的抗旋转异构体。