Photochemical Rearomatization and Dearomatization of Tricarbonyl(η5-cyclohexadienyl)manganese Complexes
摘要:
Photoirradiation of the tricarbonyl(eta(5)-cyclohexadienyl)manganese complexes 2 in dichloromethane or cyclohexane leads to the formation of the rearomatization products 3 in high yield, while photoirradiation of 2 in acetonitrile or dimethylformamide results in 3 and deaxomatization products 5 and 6 with the ratio 1(5 + 6) of ca. 1:1. In the presence of acetic acid the photochemical reaction of 2 both in dichloromethane and in acetonitrile exclusively yields 5 and 6. The photochemical reaction of 2 might be of significant utility in the synthesis of functionalized arenes and substituted cyclohexadienes.
Photochemical Rearomatization and Dearomatization of Tricarbonyl(η5-cyclohexadienyl)manganese Complexes
摘要:
Photoirradiation of the tricarbonyl(eta(5)-cyclohexadienyl)manganese complexes 2 in dichloromethane or cyclohexane leads to the formation of the rearomatization products 3 in high yield, while photoirradiation of 2 in acetonitrile or dimethylformamide results in 3 and deaxomatization products 5 and 6 with the ratio 1(5 + 6) of ca. 1:1. In the presence of acetic acid the photochemical reaction of 2 both in dichloromethane and in acetonitrile exclusively yields 5 and 6. The photochemical reaction of 2 might be of significant utility in the synthesis of functionalized arenes and substituted cyclohexadienes.
Reduction and alkylation of (η6-arene)tricarbonylmanganese complexes using alkyl-substituted coenzyme NADH models
作者:Lidong Cao、Li Zheng、Qiliang Huang
DOI:10.1016/j.jorganchem.2014.06.021
日期:2014.10
direct tert-butyl group transfer was observed between t-BuBNAH and (η6-arene)Mn(CO)3+ complexes in reflux acetonitrile without a radical initiator, and the corresponding tert-butylradical addition products were achieved. The substituents on the aromatic ring significantly influence the reactivity and chemoselectivity. The electron-withdrawing group helps to promote the reactions. The radical inhibition
Indium-Mediated Alkyl Radical Addition to (η<sup>6</sup>-Arene)tricarbonylmanganese Complexes in Aqueous Media
作者:Lidong Cao、Meihua Shen、Chaozhong Li
DOI:10.1021/om050721c
日期:2005.11.1
Alkyl radical addition to (eta(6)-arene)tricarbonylmangenese complexes was investigated with SMI2, zinc, or indium as the radical initiator. Among them, the indium-mediated reactions of (eta(6)-arene)tricarbonylmangenese cations with various alkyl iodides in aqueous media afforded the corresponding radical addition-reduction products in moderate to excellent yields.