Pyrylium salts in the synthesis of 2-pyrazoline derivatives and earlier unknown substituted 3,3a,4,7-tetrahydropyrazolo[1,5-a]pyridin-7-ones
作者:L. Yu. Ukhin
DOI:10.1007/s11172-007-0324-5
日期:2007.10
New 1,3,5-substituted 2-pyrazoline derivatives were synthesized from 2,6-diphenylpyrylium perchlorate and acylhydrazines. Method for the synthesis of earlier unknown 3,3a,4,7-tetrahydropyrazolo[1,5-a]pyridin-7-one derivatives from pyrylium salts and cyanoacetic acid hydrazide was proposed.
新的 1,3,5-取代 2-吡唑啉衍生物由 2,6-二苯基吡喃高氯酸盐和酰基肼合成。提出了从吡喃盐和氰基乙酸酰肼合成早期未知的 3,3a,4,7-四氢吡唑并 [1,5-a]pyridin-7-one 衍生物的方法。