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