Ruthenium(ii)-catalyzed synthesis of indazolone-fused cinnolines via C–H coupling with diazo compounds

Literature Information

Publication Date 2018-09-13
DOI 10.1039/C8OB02071J
Impact Factor 3.876
Authors

Lin Su, Zheng Yu, Peiling Ren, Zhi Luo, Wei Hou, Hongtao Xu


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Abstract

A robust, efficient and scalable method for the synthesis of 12H-indazolo[2,1-a]cinnolin-12-ones was developed. Significantly, a less developed cationic complex [Ru(p-cymene)(MeCN)3(SbF6)2] was found to be effective for this transformation. In this reaction, a tandem pathway of C–H ruthenation, Ru(II)–carbene formation, migratory insertion and condensation was involved. The results of a primary mechanistic study suggested that the C–H activation process might follow an electrophilic-type metalation/deprotonation mechanism.

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Organic & Biomolecular Chemistry

Organic & Biomolecular Chemistry
CiteScore: 3.4
Self-citation Rate: 10.3%
Articles per Year: 1041

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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