Double carbonylation of aryl iodides with diethylamine catalyzed by dinuclear palladium complexes
作者:Naofumi Tsukada、Yoichi Ohba、Yoshio Inoue
DOI:10.1016/j.jorganchem.2003.08.014
日期:2003.12
Dinuclear palladium complexes bridged by a novel PNNP ligand, N,N′-bis[(2-diphenylphosphino)phenylformamidinate (dpfam), were found to be very efficient and selective catalysts for the doublecarbonylation of iodobenzene with diethylamine using K3PO4 as base and 1,4-dioxane as solvent with a TON up to 105 and selectivity of 96%.
已发现由新型PNNP配体N,N'-双[(2-二苯基膦基)苯基甲ami酸盐(dpfam)桥接的双核钯络合物是非常有效的选择性催化剂,可使用K 3 PO 4作为二乙胺与二乙胺进行双羰基化反应。碱和1,4-二恶烷作为溶剂,TON高达10 5,选择性为96%。
Catalytic double carbonylation of organohalogen compounds promoted by palladium complexes
Various organohalogem compounds can be catalytically converted into α-keto amides on reaction with carbonmonoxide and amines. Tertiary phosphine-coordinated palladium compounds are particularly suitable as the double carbonylation catalyst.
Aryl-palladium-NHC complex: efficient phosphine-free catalyst precursors for the carbonylation of aryl iodides with amines or alkynes
作者:Chunyan Zhang、Jianhua Liu、Chungu Xia
DOI:10.1039/c4ob01878h
日期:——
aryl-palladium-NHC compounds was prepared according to the reported methods and their catalytic activity in the carbonylation of aryl iodides to synthesize α-keto amides and alkynones was examined. These practical aryl-palladium-NHC complexes have shown highly efficient catalyzed carbonylation and Sonogashira carbonylation reactions, with high turnover number in synthesis of α-keto amides (TON = 4300) and in synthesis
One-Pot Route to New α,α-Difluoroamides and α-Ketoamides
作者:Rajendra P. Singh、Jean'ne M. Shreeve
DOI:10.1021/jo034487g
日期:2003.7.1
New alpha,alpha-difluoroamides (4a-d, 6a-d) and alpha-ketoamides (5a-d, 7a-d) result from one-pot reactions of alpha-ketoacids, RCOCO(2)H (R = C(6)H(5), CH(3), CH(3)CH(2), thienyl) (1a-d) with bis(2-methoxyethyl)aminosulfur trifluoride [(CH(3)OCH(2)CH(2))(2)NSF(3)] (2) (Deoxofluor) or diethylaminosulfur trifluoride [(CH(3)CH(2))(2)NSF(3))] (3) (DAST). Product yields depend on reaction times and the