作者:Alan R. Katritzky、Mingyi Wang、Suoming Zhang、Michael V. Voronkov、Peter J. Steel
DOI:10.1021/jo0101407
日期:2001.10.1
A regioselective synthesis has been developed for the preparation of unsymmetrical 1,3,5-triaryl-4-alkylpyrazolines and -pyrazoles by treatment of alpha-benzotriazolyl-alpha,beta-unsaturated ketones with monosubstituted hydrazines followed by alkylation at the 4-position of the pyrazoline ring. Reaction of alpha-benzotriazolyl-alpha,beta-unsaturated ketones with hydroxylamine gives 3,5-disubstituted
已经开发了区域选择性合成方法,用于制备不对称的1,3,5-三芳基-4-烷基吡唑啉和-吡唑,方法是用单取代的肼处理α-苯并三唑基-α,β-不饱和酮,然后在4位上烷基化吡唑啉环。α-苯并三唑基-α,β-不饱和酮与羟胺反应,可选择性地3,5-二取代的异恶唑。