Carbonylative Synthesis of Phthalimides and Benzoxazinones by Using Phenyl Formate as a Carbon Monoxide Source
作者:Sujit P. Chavan、Bhalchandra M. Bhanage
DOI:10.1002/ejoc.201500109
日期:2015.4
efficient palladium-catalyzed carbonylative cyclization of N-substituted 2-iodobenzamides and 2-iodoanilides was investigated for the synthesis of phthalimides and benzoxazinones, respectively, by usingphenylformate as a CO source. The present catalytic protocol circumvents the use of an expensive phosphine ligand as well as solvent in the case of the phthalimidesynthesis. Moreover, mild reaction conditions
通过使用甲酸苯酯作为 CO 源,研究了一种简单有效的钯催化的 N-取代 2-碘苯甲酰胺和 2-碘苯胺的羰基化环化反应,分别用于合成邻苯二甲酰亚胺和苯并嗪酮。本催化协议在邻苯二甲酰亚胺合成的情况下避免使用昂贵的膦配体以及溶剂。此外,温和的反应条件和对各种官能团的耐受性增强了该方法的普遍适用性。
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
A straightforward and general method has been developed for the synthesis of phthalimide derivatives from 2-iodobenzamides and PPh3/I2/HCOOH in the presence of a catalytic amount of Pd(OAc)2. The reaction results demonstrate that PPh3/I2/HCOOH is a facile, efficient and safe CO source. The whole process is carried out in toluene at 80 °C and furnishes the desired products in good to excellent yields
已经开发了一种简单且通用的方法,用于在催化量的Pd(OAc)2存在下由2-碘联苯甲酰胺和PPh 3 / I 2 / HCOOH合成邻苯二甲酰亚胺衍生物。反应结果表明,PPh 3 / I 2 / HCOOH是一种简便,高效,安全的CO源。整个过程在80°C的甲苯中进行,并以优异的产率提供了所需的产品。
Carbonylation Access to Phthalimides Using Self-Sufficient Directing Group and Nucleophile
Herein we report a novel palladium-catalyzedoxidativecarbonylation reaction for the synthesis of phthalimides with high atom- and step-economy. In our strategy, the imine and H2O, which are generated in situ from the condensation of aldehyde and amine, serve as self-sufficient directing group and nucleophile, respectively. This method provides rapid access to phthalimides starting from readily available
An intermolecularanti-Markovnikovhydroamination of alkenes has been developed using triethyl phosphite and N-hydroxyphthalimide. The process tolerates a wide range of alkenes, including vinyl ethers, silanes, and sulfides as well as electronically unbiased terminal and internal alkenes. The resultant N-alkylphthalimides can readily be transformed to the corresponding primary amines. Mechanistic probes