CH bond activation by rhodium(I) and the mechanism of the olefin isomerization: new synthesis of β,γ-unsaturated ketones via η1- or η3-alkylallylrhodium(III) complexes by reductive elimination
作者:Chul-Ho Jun
DOI:10.1016/0022-328x(90)85104-7
日期:1990.7
4-pentadienerhodium(I) chloride (2) by CH bond activation, followed by hydrometallation, and double bond migration. Higher concentrations of pyridine as coordinating ligand transforms η3-1-ethylallylrhodium(III) complexes (8a,8b) into η1-pent-2-enylrhodium(III) complex (11a). Acylrhodium(III)-η3-syn,anti-1,3-dimethylallyl complex (14) was also prepared from 1,3-pentadienerhodium(I) chloride (16) and
Acylrhodium(III)-η 3 -1-乙基烯丙基配合物(7)用8-喹啉甲醛(反应制备3)和1,4- pentadienerhodium(I)氯化物(2)由CH键活化,随后hydrometallation ,以及双键迁移。较高浓度的吡啶作为配位配体变换η 3 -1- ethylallylrhodium(III)复合物(图8a,图8b)成η 1 -戊-2- enylrhodium(III)配合物(11A)。Acylrhodium(III)-η 3 -顺,反-1,3-二甲基烯丙基配合物(14(I))也由1,3- pentadienerhodium制备酰氯(16)和3。acylrhodium的还原消除(III)-η 1 -和-η 3 -1-烷基烯丙基络合物由亚磷酸三甲酯给出各种β,γ不饱和酮。