Studies on the synthesis of 2-(2-arylvinyl)thieno[2,3-<i>d</i>]pyrimidines and 5-(2-arylvinyl)triazolothieno[3,2-<i>e</i>]pyrimidines
作者:C. J. Shishoo、M. B. Devani、G. V. Ullas、S. Ananthan、V. S. Bhadti
DOI:10.1002/jhet.5570220343
日期:1985.5
Synthesis of 2-(2-arylvinyl)thienopyrimidines, by the acid catalyzed condensation of nitriles with thiophene o-aminocarbonyl compounds, the condensation of aldehydes with thiophene o-aminoamides, the base catalyzed condensation of aldehydes with 2-methylthienopyrimidines and by the Wittig condensation of 2-thieno-pyrimidinylmethylphosphonium salts with aldehydes is described. Isomeric 5-methyltria
的2-(2-芳基乙烯基)噻吩并嘧啶的合成,通过的酸催化缩合腈与噻吩ø -氨基羰基的化合物,与醛类的缩合噻吩Ó -aminoamides,醛的碱催化缩合用2- methylthienopyrimidines并通过维悌希缩合描述了2-硫代嘧啶基甲基phosph盐与醛的混合物。发现在碱性条件下,同构的5-甲基三唑并噻吩并嘧啶与醛反应生成5-(2-芳基乙烯基)三唑并[2,3 - c ]噻吩并嘧啶。虽然5-苯乙烯基三唑并[4,3- c ]异构体能抵抗酸催化的异构化,但发现它们在碱催化下异构化为三唑并[2,3- c ]嘧啶。