Acetylenes. Part 2. 2-methylpyrimidin-4(3H)-ones and 4-amino-6-(1-hydroxyalkyl)-2-methylpyrimidines from alka-2,3-dienoates and 4-hydroxyalk-2-ynenitriles, respectively
作者:Ralph R Roberts、Stephen R Landor、Evon.A Bolessa
DOI:10.1016/s0040-4039(00)76817-1
日期:1994.5
Ethyl alka-2,3-dienoates and 4-tetrahydropyranyloxyalk-2-ynenitriles provide a 3-atom fragment when reacted with acetamidine in tetrahydrofuran, to furnish 2-methylpyrimidin-4(3H)ones and 4-amino-2-methyl-6-(1-tetrahydropyranyloxyalkyl)pyrimidines, respectively (60-70%yield). The latter, with hydrochloric acid / ethanol, gave the corresponding 4-amino-6-(1-hydroxyallcyl-2-merhylpyrimidines as their hydrochloride salts.