CC BY ND NC 4.0 · SynOpen 2018; 02(02): 0180-0191
DOI: 10.1055/s-0037-1610154
paper
Copyright with the author

Triflic Anhydride Promoted Synthesis of Primary Amides and their Conversion into Nitriles

Anil Rana
Drug Discovery Research Center, Translational Health Science and Technology Institute Faridabad, 121001, India   Email: dinesh.mahajan@thsti.res.in   Email: chemidinesh@gmail.com
,
Varun Kumar
Drug Discovery Research Center, Translational Health Science and Technology Institute Faridabad, 121001, India   Email: dinesh.mahajan@thsti.res.in   Email: chemidinesh@gmail.com
,
Lata Tiwari
Drug Discovery Research Center, Translational Health Science and Technology Institute Faridabad, 121001, India   Email: dinesh.mahajan@thsti.res.in   Email: chemidinesh@gmail.com
,
Anamika Thakur
Drug Discovery Research Center, Translational Health Science and Technology Institute Faridabad, 121001, India   Email: dinesh.mahajan@thsti.res.in   Email: chemidinesh@gmail.com
,
Chhuttan Lal Meena
Drug Discovery Research Center, Translational Health Science and Technology Institute Faridabad, 121001, India   Email: dinesh.mahajan@thsti.res.in   Email: chemidinesh@gmail.com
,
Dinesh Mahajan*
Drug Discovery Research Center, Translational Health Science and Technology Institute Faridabad, 121001, India   Email: dinesh.mahajan@thsti.res.in   Email: chemidinesh@gmail.com
› Author Affiliations
We would like to thank the Translational Health Science and Technology Institute (THSTI) for intramural research funding and DBT-BIRAC for grant BT/CRS0200/CRS-10/16.

Further Information

Publication History

Received: 24 March 2018

Accepted after revision: 30 April 2018

Publication Date:
08 June 2018 (online)


Abstract

A facile, two-pot conversion of carboxylic acids into the corresponding nitriles has been developed using triflic anhydride as a promoter and aqueous NH4OH as a source of nitrogen. The methodology involves synthesis of primary amides from carboxylic acids as the key first step using triflic anhydride and aqueous NH4OH as a source of ­nitrogen. Triflic anhydride is also found to be an excellent reagent for conversion of primary amides into nitriles, affording high yields with considerable chemoselectivity and functional group tolerance. In spite of the mild reaction conditions and broad substrate scope for the two-step conversions, all attempts for one-pot domino conversion of acids into nitriles exhibited limited success because of poor yields.

Supporting Information