Durch (Lig)Ni(0) induzierte Herstellung von mono- und di-Carbonsäuren aus Cyclopenten und Kohlendioxid
作者:Heinz Hoberg、Alfredo Ballesteros、Andrei Sigan、Corine Jegat、Armin Milchereit
DOI:10.1055/s-1991-26475
日期:——
(Lig)Ni(0) Induced Preparation of Mono- and Dicarboxylic Acids from Cyclopentene and Carbon Dioxide Cyclopentene is shown to be an ideal substrate for coupling reactions with (Lig)nickel(0) systems. By variation of the ligands and addition of promotors, it is possible by successive application of carbon dioxide or carbon monoxide to prepare highly selectively series of cyclopentane- and cyclopentenecarboxylic acids (six examples), 4, 5, 6, 11, 14, 15, cyclopentanedicarboxylic acids (three examples), 7, 8,12, or 2-hydroxycyclopentanecarboxylic acid (9) in good yields. The C5-skeleton is retained in the products.
(配体)镍(0)诱导环戊烯和二氧化碳制备单羧酸和二羧酸 研究表明,环戊烯是(配体)镍(0)系统偶联反应的理想底物。通过改变配体和添加促进剂,可以连续使用二氧化碳或一氧化碳,以良好的收率制备出高选择性的环戊烷和环戊烷羧酸系列(六个实例)、4、5、6、11、14、15、环戊烷二羧酸(三个实例)、7、8、12 或 2-羟基环戊烷羧酸(9)。产物中保留了 C5 骨架。