Effect of nitrogen substituents on the relative energies of twist and chair-form conformations of 2-oxo-2-dimethylamino-5--butyl-1,3,2-oxazaphosphorinanes
作者:S. Chandrasekaran、Wesley G. Bentrude
DOI:10.1016/0040-4039(80)88090-7
日期:1980.1
Replacement of the phenyl substituent on nitrogen of the 1,3,2-oxaza ring of the title compounds changes the twist-chair equilibrium such that the chair conformation is populated rather than the twist form primarily occupied in the N-phenyl case. A possible rationale based on Me2N-phenyl interactions is proposed.
标题化合物的1,3,2-氧杂氮杂环的氮上的苯基取代基的取代改变了扭曲-椅平衡,使得填充了椅构象,而不是主要存在于N-苯基情况下的扭曲形式。提出了基于Me 2 N-苯基相互作用的可能原理。