作者:Piero Pino、Oreste Piccolo、Barbara Straub、Giambattista Consiglio、Dich Cong Tran
DOI:10.1002/hlca.19820650717
日期:1982.11.3
4-(l-methylpropyl)-pyridines (1a, b, c) and of the corresponding (2-methylbutyl)pyridines (2a, b, c) have been investigated in hexane at RT. and at −85°, in hexane/TFA and in aqueous HCl-solution. In 1c and 2c both the n π* and the π π* transitions are optically active, an n π* transition being located above 265 nm. The position and the sign of the CD. bands are greatly influenced by the position and the nature
紫外线。和CD。已经在己烷中研究了旋光的2-,3-和4-(1-甲基丙基)吡啶(1a,b,c)和相应的(2-甲基丁基)吡啶(2a,b,c)的光谱RT。并于-85°C在己烷/ TFA和HCl水溶液中洗脱。在1c和2c中,nπ*和ππ*跃迁都具有光学活性,nπ*跃迁位于265 nm以上。CD的位置和符号。能带很大程度上受烷基取代基的位置和性质影响。