作者:Sandro Cacchi、Giancarlo Fabrizi、Antonella Goggiamani、Simona Sgalla
DOI:10.1002/adsc.200600299
日期:2007.2.5
N,N-Dialkyl-N′-arylhydrazines have been prepared usually in high to excellent yields via the reaction of N,N-dialkylhydrazines with aryl chlorides in the presence of Pd2(dba)3, Xphos and NaO-t-Bu in dioxane at 120 °C. With ortho-substituted aryl chlorides best results have been obtained by using 2-(2′,6′-dimethoxybiphenyl)dicyclohexylphosphine (ligand d) as the ligand.
N,N- -二烷基N' -arylhydrazines已通常在高到经由反应优异的产率制备的N,N- -dialkylhydrazines与在Pd的存在下芳基氯化物2(DBA)3,XPHOS和NaO-叔卜在二恶烷在120°C下。与邻位取代的芳基氯化物已经通过使用获得的最佳结果2-(2',6'-二甲氧基联苯)二环己基膦(配体d)作为配体。