Asymmetric nitrogen. Part 75. Stereochemistry of diaziridinyl radicals
作者:Gennady V. Shustov、Alexandr I. Prokofyev、Sergei N. Denisenko、Alexandr Yu. Shibayev、Yury V. Puzanov、Remir G. Kostyanovsky
DOI:10.1039/p29900000141
日期:——
yls (6)-(10), as well as the bicyclic diaziridinyls (13)–(15), generated by the photolysis of 5-substituted exo-6-chloro-1,6-diazabicyclo[3.1.0]hexanes. Theoretical ab initio MO calculations (UHF 3-21 G) on the simplest diaziridinyl (5) have been performed. Diaziridinyl radicals in the ground state have a pyramidal configuration at the trico-ordinated nitrogen atom. The difference between the theoretically
已记录3,3-二甲基-,3,3-双(三氟甲基)-和3,3-双(甲氧基羰基)-2-烷基重氮基(6)-(10)以及双环二叠氮基的ESR光谱(13)–(15),是由5-取代的exo -6-chloro-1,6-diazabicyclocyclo [3.1.0]己烷光解产生的。已对最简单的二叠氮基(5)进行了理论上的从头开始的MO计算(UHF 3-21 G)。基态的二叠氮基自由基在三配位氮原子上具有金字塔构型。理论计算的二叠氮基(5)和二氮丙啶(11)的转化势垒的差异。)为67.2 kJ mol –1,而2-异丙基-3,3-双(三氟甲基)重氮基(7)与相应的NH-二氮丙啶的实验反演势垒之间为78.7 kJ mol –1。双环二叠氮基(13)–(15)更喜欢船型。