The ‘t-Amino Effect’ of ortho-Nitroso Amines. Synthesis of 2,6-Diaminoadenine Derivatives from 6-(Dialkylamino)-5-nitrosopyrimidines
作者:Maria del Carmen Ruiz Ruiz、Andrea Vasella
DOI:10.1002/hlca.201100098
日期:2011.5
The ‘t‐amino effect’ of amino‐nitroso compounds was documented by preparing the (dialkylamino)‐nitroso pyrimidines 4–18, and cyclising them under thermal conditions in high yields to the purine derivatives 19–32. The reactivity of the amino‐nitroso‐pyrimidines, particularly of 17 derived from diethyl iminodiacetate, and of 19, derived from 1‐phenylimidazolidine, correlates with the stability of the
在“吨氨基亚硝基化合物,即制备(二烷基氨基)亚硝基记录嘧啶的氨基效应” 4 - 18,并以高收率与嘌呤衍生物的热条件下环化他们19 - 32。氨基亚硝基嘧啶的反应性,特别是亚氨基二乙酸二乙酯中的17种和1-苯基咪唑烷中的19种,与中间体甲亚胺叶立德的稳定性相关。氨基亚硝基嘧啶的热解34 - 37,具有二烷基氨基的取代基在C(4)和C(6),由protiodenitrosation进行,导致38– 41。