Preparation of N-substituted phthalimides by the palladium-catalyzed carbonylation and coupling of o-dihalo aromatics and primary amines
摘要:
A novel method for the formation of N-substituted phthalimides is described which is based on the palladium-catalyzed carbonylation and coupling of o-dihalo aromatics and primary amines. Optimal conditions established for the reaction using o-diiodobenzene and aniline were DMAc (0.2 M), 115-degrees-C, 90 psi of CO, 3% PdCl2L2, and 2.4 equiv of DBU. This process is tolerant of a wide variety of functional groups and gives good yields of the desired products. Variables such as temperature, catalyst type and loading, CO pressure, solvent, and base were examined to optimize this reaction. The reaction of aniline with 1,2-dibromocyclopentene under similar conditions gave a variety of products.
Cuprous Oxide Catalyzed Oxidative CC Bond Cleavage for CN Bond Formation: Synthesis of Cyclic Imides from Ketones and Amines
作者:Min Wang、Jianmin Lu、Jiping Ma、Zhe Zhang、Feng Wang
DOI:10.1002/anie.201508071
日期:2015.11.16
cleavage of a CCbond offers a straightforward method to functionalize organic skeletons. Reported herein is the oxidative CCbond cleavage of ketone for CN bondformation over a cuprous oxide catalyst with molecular oxygen as the oxidant. A wide range of ketones and amines are converted into cyclic imides with moderate to excellent yields. In‐depth studies show that both α‐CH and β‐CH bonds adjacent
Ruthenium(II)‐Catalyzed CH Activation with Isocyanates: A Versatile Route to Phthalimides
作者:Suman De Sarkar、Lutz Ackermann
DOI:10.1002/chem.201404261
日期:2014.10.20
A cationic ruthenium(II)‐complex was utilized in the efficient synthesis of phthalimide derivatives by CHactivation with synthetically useful amides. The reaction proceeded through a mechanistically unique insertion of a cycloruthenated species into a CHet multiple bond of isocyanate. The novel method also proved applicable for the synthesis of heteroaromatic unsymmetric diamides as well as a potent