Palladium on Carbon: An Efficient, Heterogeneous and Reusable Catalytic System for Carbonylative Synthesis of<i>N</i>-Substituted Phthalimides
作者:Mayur V. Khedkar、Shoeb R. Khan、Dinesh N. Sawant、Dattatraya B. Bagal、Bhalchandra M. Bhanage
DOI:10.1002/adsc.201100460
日期:2011.12
application of palladium on carbon (Pd/C) as a heterogeneous recyclable catalyst was investigated for the double carbonylation of o-dihaloarenes with amines providing excellent yield of N-substituted phthalimides in shorter reaction time as compared to earlier reported homogeneous protocols. Furthermore, the scope of the developed protocol was applied for the synthesis N-substituted phthalimides from o-halobenzoates
Practical Synthesis of Phthalimides and Benzamides by a Multicomponent Reaction Involving Arynes, Isocyanides, and CO<sub>2</sub>/H<sub>2</sub>O
作者:Trinadh Kaicharla、Manikandan Thangaraj、Akkattu T. Biju
DOI:10.1021/ol500403x
日期:2014.3.21
Transition-metal-freemulticomponentreactionsinvolvingarynes and isocyanides with either CO2 or H2O have been reported. With CO2 as the third component, the reactions resulted in the formation of N-substituted phthalimides. The utility of water as the third component furnished benzamide derivatives in moderate to good yields. These reactions took place under mild conditions with broad scope.
Influence of
<i>N</i>
‐Substitution in 3‐Alkyl‐3‐hydroxyisoindolin‐1‐ones on the Stereoselectivity of Brønsted Acid‐Catalyzed Synthesis of 3‐Methyleneisoindolin‐1‐ones
作者:Nikola Topolovčan、Filip Duplić、Matija Gredičak
DOI:10.1002/ejoc.202100400
日期:2021.7.26
Brønsted acid-catalyzed dehydration of 3-alkyl-3-hydroxyisoindolin-1-ones is discussed. The reaction is efficiently catalyzed by methanesulfonic acid in acetonitrile and provides the corresponding 3-methyleneisoindolin-1-ones. The E/Z stereochemistry around the exocyclic double bond is in strong correlation with the size of the N-substituent. Selective formation of only one stereoisomer can be controlled
A RAPID SYNTHESIS OF <i>N</i>-ARYL PHTHALIMIDES UNDER MICROWAVE IRRADIATION IN THE ABSENCE OF SOLVENT
作者:Hui-Zhang Li、Jin-Song Zhang、Ya-Ming Zhou、Tong-Shuang Li
DOI:10.1081/scc-120002706
日期:2002.1.1
ABSTRACT A mixture of phthalic anhydride (1) and aromatic amines (2a–h) were irradiated in a microwave oven for 2–10 min to provide N-aryl phthalimides (3a–h) in 91–95% yields.
Carbon Monoxide-Free One-Step Synthesis of Isoindole-1,3-diones by Cycloaminocarbonylation of o-Haloarenes Using Formamides
作者:Dinesh N. Sawant、Yogesh S. Wagh、Kushal D. Bhatte、Bhalchandra M. Bhanage
DOI:10.1002/ejoc.201101000
日期:2011.11
A new carbonmonoxide-free, solvent-free, single step protocol for the synthesis of isoindole-1,3-diones from o-haloarenesusing palladium acetate and xantphos catalysis is reported. The wider applicability of this protocol for several types of o-iodoarenes and a few o-bromoarenes makes it attractive. Aryl iodides and aryl bromides provided moderate to excellent yields of up to 93 %.