Synthesis 2024; 56(22): 3459-3467
DOI: 10.1055/s-0040-1720130
paper

1,2,3-Triazole-Guided Multi-Component Sonogashira Coupling of Substituted Benzosuberenes Derived from Cedrus deodara Oil

Ashish Kumar
a   Chemical Technology Division, CSIR- Institute of Himalayan Bioresource Technology, Palampur-176061, H. P., India
b   Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
,
Mahender Kumar
a   Chemical Technology Division, CSIR- Institute of Himalayan Bioresource Technology, Palampur-176061, H. P., India
b   Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
,
Poonam Sharma
a   Chemical Technology Division, CSIR- Institute of Himalayan Bioresource Technology, Palampur-176061, H. P., India
b   Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
,
Pralay Das
a   Chemical Technology Division, CSIR- Institute of Himalayan Bioresource Technology, Palampur-176061, H. P., India
b   Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
› Author Affiliations
Ashish Kumar, Mahender Kumar, and Poonam Sharma thank CSIR New Delhi for awarding fellowships and financial support as part of project number MLP0203.


Abstract

Herein, Sonogashira coupling at the vinyl bromide position of triazole-bearing benzosuberene has been introduced for the synthesis of potentially bioactive 1,2,3-triazole and conjugated enynes containing benzosuberene analogues. The instalment of triazole moiety on the allylic position dictates the Sonogashira coupling at the vinylic position, the absence of which failed to execute the desired reaction. The Cu-catalyzed cycloaddition initially led to the incorporation of 1,2,3-triazole, which subsequently directed the Pd/Cu-catalyzed Sonogashira coupling to deliver new class of benzosuberene analogues in appreciable yields. The regioselective synthesis of 1,2,3-triazole and conjugated enynes containing benzosuberene analogues has been reported under operationally simple and milder reaction conditions.

Supporting Information



Publication History

Received: 19 June 2024

Accepted after revision: 02 August 2024

Article published online:
20 September 2024

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