Electrophilic amination of pyrimidine-2-thiones - synthesis of zwitterionic 2-aminothiopyrimidinium-N-ylides, pyrimidine-2-ones and bicyclic pyrimidinium compounds
作者:Beate Riemer、Michael Pätzel、Ahmed Hassoun、Jürgen Liebscher、Willy Friedrichsen、Peter G. Jones
DOI:10.1016/s0040-4020(01)90229-7
日期:1993.4
1-Amino-pyrimidine-2-thiones 2 or 11 and 1-acylmethyl-pyrimidine-2-thiones 13 react with 3,3-pentamethyleneoxaziridine 3 or hydroxylamine-O-sulfonic acid by electrophilicamination of the sulfur atom yielding zwitterionic 2-amino-1-imidothiopyrimidinium-N-ylides 4 and 12 or 1-aminopyrimidine-2-ones 5 and 1-acylmethylpyrimidine-2-ones 14. The pyrimidine-2-ones 5 and 14 can be cyclized by dehydration