Facile synthesis of 1,3,4-benzotriazepines and 1-arylamide-1H-indazoles viapalladium-catalyzed cyclization of aryl isocyanates and aryl hydrazones under microwave irradiation

Literature Information

Publication Date 2010-09-08
DOI 10.1039/C0OB00021C
Impact Factor 3.876
Authors

Chune Dong, Lingli Xie, Xiaohong Mou, Yashan Zhong, Wei Su


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Abstract

A strategy involving palladium-catalyzed cyclization of halo-phenyl hydrazones and aryl isocyanates provides a convenient approach to the synthesis of 1,3,4-benzotriazepines (4) or 1-arylamide-1H-indazoles (5) in good isolated yields. Microwave irradiation was found to afford high reaction efficiency, while the choice of halophenyl hydrazone had an effect on the pathway of the reaction.

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Organic & Biomolecular Chemistry

Organic & Biomolecular Chemistry
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Organic & Biomolecular Chemistry (OBC) publishes original and high impact research and reviews in organic chemistry. We welcome research that shows new or significantly improved protocols or methodologies in total synthesis, synthetic methodology or physical and theoretical organic chemistry as well as research that shows a significant advance in the organic chemistry or molecular design aspects of chemical biology, catalysis, supramolecular and macromolecular chemistry, theoretical chemistry, mechanism-oriented physical organic chemistry, medicinal chemistry or natural products. Articles published in the journal should report new work which makes a highly-significant impact in the field. Routine and incremental work is generally not suitable for publication in the journal. More details about key areas of our scope are below. In all cases authors should include in their article clear rationale for why their research has been carried out.

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