Theoretical and experimental studies of cycloconjugation involving second-row elements
作者:Gideon Fraenkel、Christopher J. Kolp、Albert Chow
DOI:10.1021/ja00037a040
日期:1992.5
investigate conjugative interactions between second-row elements (S, P) amd a π-electron system, barriers to amide rotation have been measured using NMR line-shape methods, for N-acetyl-4-X(hetero)-1,4-dihydropyridines (X=SO 2 , 7; P(O)OCH 3 , 13; C(CH 3 ) 2 , 6 (reference)) as well as the dihydro (8a) and tetrahydro (9) derivatives, respectively, of 7
在研究第二行元素 (S, P) 和 π 电子系统之间的共轭相互作用的方法中,使用 NMR 线形方法测量了酰胺旋转的障碍,对于 N-乙酰基-4-X(异) -1,4-二氢吡啶(X=SO 2 , 7; P(O)OCH 3 , 13; C(CH 3 ) 2 , 6 (参考))以及二氢(8a)和四氢(9)衍生物,分别为 7