Structural studies of some 1-polymethyleneimino-2,4-dinitrobenzenesand related compounds; crystal structure of 1-(cis-2′,6′-dimethylpiperidin-1′-yl)-2,4-dinitrobenzene
作者:Maureen F. Mackay、Douglas J. Gale、John F. K. Wilshire
DOI:10.1071/ch00076
日期:——
The ultraviolet and 1H n.m.r. spectra of some1-polymethyleneimino-2,4-dinitrobenzenes and related compounds are discussed.The effect of trifluoroacetic acid on these spectra was also investigated;with 1-azetidinyl-2,4-dinitrobenzene, acid-catalysed ring opening wasobserved. The solid-state conformation of1-(cis-2′,6′-dimethylpiperidin-1′-yl)-2,4-dinitrobenzenehas been defined by single-crystal X-ray
讨论了一些1-聚亚甲基亚氨基-2,4-二硝基苯和相关化合物的紫外和1H nmr光谱。还研究了三氟乙酸对这些光谱的影响;1-氮杂环丁烷基-2,4-二硝基苯,酸催化开环被观测到。1-(cis-2',6'-二甲基哌啶-1'-基)-2,4-二硝基苯的固态构象已通过单晶X射线晶体学确定。三斜晶体属于空间群 P-1,a 8.165(1)、b 7.865(1)、c 11.148(1) Å、α 95.23(1)、β 106.00(1)、γ 92.63(1)˚ 和 Z 2。对于 2222 个观测数据,该结构被细化为 0.048 的最终 R。在晶体中,苯环呈轻微的船形构象,而氨基和邻硝基从环的平均平面明显扭曲。