Selective Aryl α-Diimine/Palladium-Catalyzed Bis-Alkoxy- carbonylation of Olefins for the Synthesis of Substituted Succinic Diesters
作者:Francesco Fini、Michela Beltrani、Raffaella Mancuso、Bartolo Gabriele、Carla Carfagna
DOI:10.1002/adsc.201400501
日期:2015.1.12
palladium‐catalyzed oxidative bis‐alkoxycarbonylation reaction of olefins. The most active catalyst was formed in situ from bis(9‐anthryl)‐2,3‐dimethyl‐1,4‐diazabutadiene and palladium(II) trifluoroacetate [Pd(TFA)2]. This catalytic system was able to selectively convert olefins into succinic diesters in good yields (up to 97%) and low catalyst loading (up to 0.5 mol%) under mild reaction conditions [4 bar
芳基α-二亚胺衍生物首次被用作钯催化烯烃的氧化双烷氧基羰基化反应的有效新配体。形成最活跃的催化剂在原位从双(9-蒽基)-2,3-二甲基-1,4- diazabutadiene和钯(II)三氟乙酸盐[钯(TFA)2 ]。该催化体系能够在温和的反应条件下[4 bar一氧化碳(CO)在20°C下,存在p甲苯磺酸作为添加剂和p-苯醌作为氧化剂]。通过使用甲醇,苯甲醇或异丙醇作为亲核试剂,优化的条件可以成功地应用于芳族和脂族烯烃。