作者:M. M. Krayushkin、M. A. Kalik、S. A. Voznesensky
DOI:10.1007/bf00699146
日期:1994.1
have been prepared in high yields by the reaction of substituted,N-(P;-nitrophenyl)-3-thiophenecarbohydrazonoyl chlorides with Et3N in CH2Cl2 in the presence of an excess of a monosubstituted olefin. The reaction probably occurs as 1,3-dipolar cycloaddition of the corresponding 3-thiophenecarbonitrile imines formedin situ at the double bond of the olefin.
摘要 1,3,5-三取代的 3-噻吩基吡唑啉是通过取代的,N-(P;-硝基苯基)-3-噻吩碳腙酰氯与 Et3N 在 CH2Cl2 中在过量单取代烯烃存在下反应制备的。该反应可能以在烯烃双键上原位形成的相应 3-噻吩甲腈亚胺的 1,3-偶极环加成反应发生。