Poly condensed nitrogen heterocycles. V. Two novel ring systems: Pyrazolo[5,1-c]-1,2,4-thiadiazine and pyrazolo[3,4-c]-1,2-thiazine
作者:Enrico Aiello、Salvatore Plescia、Gaetano Dattolo
DOI:10.1002/jhet.5570130341
日期:1976.6
with ω-acetophenonesulfonyl chloride (II, R = C6H5). In agreement with the general pattern of the distribution of electron density in the pyrazole nucleus, this work confirms that the position 4 of ring is the favoured site of electrophilic attacks.
通过氨基吡唑IV和VII与ω-苯乙酮磺酰氯(II,R = C 6 H 5)反应获得标题化合物。与吡唑核中电子密度分布的一般模式一致,这项工作证实环的位置4是亲电攻击的首选位点。