Aqueous Hydroxide as a Base for Palladium-Catalyzed Amination of Aryl Chlorides and Bromides
作者:Ryoichi Kuwano、Masaru Utsunomiya、John F. Hartwig
DOI:10.1021/jo0258913
日期:2002.9.1
amination of aryl halides in the presence of inexpensive and air-stable alkali metal hydroxide bases and Pd[P(t-Bu)3]2 as catalyst gave arylamines in high yields. The reactions were conducted with a catalytic amount of cetyltrimethylammonium bromide as phase-transfer agent and either aqueous hydroxide or solid hydroxide in the presence of water. This combination of alkali metal hydroxide base, H2O, and
在廉价且空气稳定的碱金属氢氧化物碱和Pd [P(t-Bu)3] 2作为催化剂的存在下,芳基卤化物的胺化反应可高收率得到芳基胺。反应是在水的存在下,用催化量的十六烷基三甲基溴化十六烷基铵作为相转移剂,并用氢氧化物水溶液或固体氢氧化物进行的。在对氯甲苯与二丁胺的胺化反应中,碱金属氢氧化物碱,H2O和铵盐的这种组合与NaO-t-Bu的作用相同。氢氧化物碱适用于各种芳基氯化物和溴化物与脂肪族和芳香族胺的反应。氢氧化碱,H2O,H2O,