Several new pyrazolo[1,5-a]pyrimidines and pyrano[2,3-c]pyrazoles were synthesized viathe reaction of the cinnamonitrile derivatives 1a-c with 5-amino-3-phenylpyrazole (1), 3-amino-2-pyrazolin-5-one (2) and 3-amino-1-phenyl-2-pyrazolin-5-one (22).
通过肉桂腈衍生物1a-c与5-氨基-3-苯基吡唑(1),3-氨基-2-的反应合成了几种新的吡唑并[1,5- a ]嘧啶和吡喃并[2,3- c ]吡唑。吡唑啉-5-酮(2)和3-氨基-1-苯基-2-吡唑啉-5-酮(22)。