Synthesis of Novel 2-Amino-4-aryl-5-arylthio-6-methoxypyrimidines and 3(5)-Aryl-4-arylthio-5(3)-methylthiopyrazolesviaα-Oxo-α-arylthioketene dithioacetals
SINGH GURDEEP; DEB BISWAJIT; ILA HIRIYAKKANAVAR; JUNJAPPA HIRIYAKKANAVAR, SYNTHESIS,(1987) N 3, 286-287
作者:SINGH GURDEEP、 DEB BISWAJIT、 ILA HIRIYAKKANAVAR、 JUNJAPPA HIRIYAKKANAVAR
DOI:——
日期:——
Synthesis of Novel 2-Amino-4-aryl-5-arylthio-6-methoxypyrimidines and 3(5)-Aryl-4-arylthio-5(3)-methylthiopyrazoles<i>via</i>α-Oxo-α-arylthioketene dithioacetals
Reactions of α-arylthio-α-oxoketene dithioacetals 1 with guanidine nitrate in the presence of sodium methoxide in refluxing methanol afford novel 2-amino-4-aryl-5-arylthio-6-methoxy-pyrimidines. Similarly, when compounds 1 are reacted with hydrazine hydrate in refluxing ethanol, novel substituted 3(5)-aryl-4-arylthio-5(3) methylthiopyrazoles are obtained in high yields.