Method of preparation of 6-aza uracile and its O-disilyl derivative

摘要

A method of preparing 6-aza uracile, Bao Kuoruxiabuzhou: & P P A. The semicarbazones glyoxalic acid of cyclisation is by heating the latter and excessive trialkyl silylation agent as solvent, separate the product generated, as O- disilylated 6-aza uracile derivatives (or Di3,5 (trialkylsiloxy) 1,2,4 triazines) and& P P B. The product obtained by step a) and sour water solution being subordinate to.