Facile Synthesis of Mono-,Di-,and Trisubstituted Alpha-Unbranched Hydrazines

摘要

Methods for the alkylation of di-tert-butyl hydrazine-1,2-dicarboxylate were investigated.It was found that under mild conditions mono- or di-substituted hydrazine derivatives were obtained in good to excellent yield.Furthermore,it was shown that one of the two Boc-groups of the disubstituted derivatives was selectively removed by heating,leading to precursors for trisubstituted hydrazines.