Ruthenium-catalyzed formation of pyrazoles or 3-hydroxynitriles from propargyl alcohols and hydrazines
作者:Julia Kaufmann、Elisabeth Jäckel、Edgar Haak
DOI:10.24820/ark.5550190.p010.893
日期:——
Functionalized pyrazoles are generated from secondary propragyl alcohols and hydrazines in a rutheniumcatalyzed cascade process, consisting of redox isomerization, Michael addition, cyclocondensation and dehydrogenation steps. The same bifunctional catalyst mediates the conversion of tertiary propargyl alcohols with hydrazine to 3-hydroxynitriles via anti-Markovnikov hydroamination followed by elimination
官能化吡唑是在钌催化的级联过程中由仲丙醇和肼生成的,包括氧化还原异构化、迈克尔加成、环缩合和脱氢步骤。相同的双功能催化剂通过反马尔可夫尼科夫加氢胺化随后消除氨来介导炔丙醇叔醇与肼的转化为 3-羟基腈。