Preparations of Trisubstituted Hydrazines and Pyrazolidines from <i>N</i>-(1-Benzotriazolylalkyl)hydrazines
作者:Alan R. Katritzky、Guofang Qiu、Baozhen Yang
DOI:10.1021/jo9709110
日期:1997.11.1
Reactions of N,N'-disubstituted hydrazines with benzotriazole and aldehydes give N-(alpha-benzotriazoylalkyl)-N,N'-disubstituted hydrazines which on treatment with organometallic reagents form N-alkyl-N,N'-disubstituted hydrazines in good yields. N-(Benzotriazolylalkyl)-N,N'-disubstituted hydrazines and electron-rich olefins, in the presence of zinc bromide catalyst, generate N,N'-disubstituted pyrazolidines