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Updated: Oct 25, 2026

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
Palladium-Catalyzed Narasaka-Heck Carbonylation Using Cr(CO)6 as Carbonyl Source: Access to Ester-Containing
Xumeng Wang1, Shanhua Yu2, Jingyao Shang1
1Jiangsu Key Laboratory of Function Control Technology for Advanced Materials, School of Environmental and Chemical Engineering, Jiangsu Ocean University, Lianyungang222005, Jiangsu, China.
Abstract:
An unprecedented Pd-catalyzed CO gas-free Narasaka-Heck carbonylation using Cr(CO)6 as a convenient carbonyl source has been developed for the step-economic construction of ester-containing pyrrolines. Notably, this method overcomes the limitations of conventional radical pathways, enabling compatibility with phenol-type substrates and 1,1-disubstituted alkenes, while avoiding the use of high-pressure CO gas. The protocol features operational simplicity, a broad substrate scope, and excellent functional group tolerance, and the resulting products are amenable to diverse transformations.
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