Phosphorylation of 2-(3-methyl-1,3-diazabuten-1-yl)-3-ethoxycarbonylthiophenes with phosphorus(III) halides
作者:Alexandr M. Pinchuk、Svetlana A. Kovalyova、Sergey P. Ivonin、Anatoliy S. Merkulov、Tamara N. Kudrya、Alexandra A. Chaikovskaya、Andrey A. Tolmachev
DOI:10.1002/hc.10002
日期:——
2-(3-Methyl-1,3-diazabuten-1-yl)-3-ethoxycarbonylthiophenes are phosphorylated with phosphorus(III) halides in basic media at position 5 of the thiophene ring. Up to three heteroaromatic substituents can be introduced one by one at the same phosphorus atom. On this basis, mono-, bis-, and trishetaryl substituted P(III) and P(V) derivatives have been obtained. Phosphorylated 2-(N,N-dimethylformamidino)-3-ethoxycarbonylthiophenes
2-(3-Methyl-1,3-diazabuten-1-yl)-3-ethoxycarbonylthiophenes 在碱性介质中用磷 (III) 卤化物在噻吩环的 5 位磷酸化。最多可以在同一个磷原子上一个接一个地引入三个杂芳族取代基。在此基础上,获得了单-、双-和三四芳基取代的 P(III) 和 P(V) 衍生物。磷酸化的 2-(N,N-二甲基甲脒基)-3-乙氧基羰基噻吩提供了合成磷酸化噻吩并嘧啶的途径。© 2001 John Wiley & Sons, Inc. 杂原子化学 12:641–651, 2001