synthesized and characterized. These salts, in combination with palladium acetate, provided active catalysts for the cross-coupling of aryl chlorides and bromides under mild conditions. The catalytic system was applied to the Heck, Suzuki and benzaldehyde (Kumada) coupling reactions. Catalyst activity was found to be influenced by the presence of a methoxy group on the ring of the p-position of benzyl substituent
已经合成并表征了新的,空间要求高的1,3-二烷基-3,4,5,6-四氢
嘧啶鎓盐(2)。这些盐与
乙酸钯结合,为温和条件下芳基
氯和
溴化物的交叉偶联提供了活性催化剂。该催化体系被用于Heck,Suzuki和
苯甲醛(熊田)偶联反应。发现催化剂活性受
配体前体的苄基取代基的对位的环上甲氧基的存在的影响。