作者:A. V. Lozanova、A. V. Stepanov、V. V. Veselovsky
DOI:10.1007/s11172-010-0227-8
日期:2010.6
N,N-Dialkyl-4-bromobutanamides exist in solution in tautomeric equilibrium with N,N-dialkyl-N-(tetrahydrofuran-2-ylidene)ammonium bromides, while related 4,5-dibromopentanamides show no similar interconversions with the corresponding iminium salts. A similar difference is observed when comparing the chemical behavior of their homologs, viz., N, N-dialkyl-5-bromopentanamide and N, N-dialkyl-5,6-dibromohexanamide
N,N-二烷基-4-溴丁酰胺在溶液中与N,N-二烷基-N-(四氢呋喃-2-基)铵溴盐处于互变异构平衡中,而相关的4,5-二溴戊酰胺与相应的亚胺盐不存在类似的相互转化。在比较它们的同系物时,例如N,N-二烷基-5-溴戊酰胺和N,N-二烷基-5,6-二溴己酰胺时,观察到类似的差异。