Issue 31, 2019

Cascade Rh(ii) and Yb(iii) catalyzed synthesis of substituted naphthofurans via transannulation of N-sulfonyl-1,2,3-triazoles with β-naphthols

Abstract

An efficient cascade Rh(II) and Yb(III) catalyzed transannulation of N-sulfonyl-1,2,3-triazoles with β-naphthols has been accomplished for the synthesis of substituted naphthofurans in good yields. The reaction involves the initial rhodium catalyzed insertion of azavinyl carbene into the O–H bond followed by ytterbium catalyzed annulative C–C bond formation and concomitant aerial oxidation. The developed reaction was successfully extended to phenols to afford substituted benzofurans. Furthermore, the synthetic utility of the method was demonstrated through the synthesis of important polyhetero aromatic compounds.

Graphical abstract: Cascade Rh(ii) and Yb(iii) catalyzed synthesis of substituted naphthofurans via transannulation of N-sulfonyl-1,2,3-triazoles with β-naphthols

Supplementary files

Article information

Article type
Communication
Submitted
31 Dec 2018
Accepted
14 Mar 2019
First published
20 Mar 2019

Chem. Commun., 2019,55, 4507-4510

Cascade Rh(II) and Yb(III) catalyzed synthesis of substituted naphthofurans via transannulation of N-sulfonyl-1,2,3-triazoles with β-naphthols

S. Kaladevi, M. Kamalraj, M. Altia, S. Rajasekar and P. Anbarasan, Chem. Commun., 2019, 55, 4507 DOI: 10.1039/C8CC10306B

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