Synthesis 2020; 52(21): 3272-3276
DOI: 10.1055/s-0040-1707809
special topic
© Georg Thieme Verlag Stuttgart · New York

Zinc(II)-Catalyzed Synthesis of Secondary Amides from Ketones via Beckmann Rearrangement Using Hydroxylamine-O-sulfonic Acid in Aqueous Media

Saumya Verma
a   Department of Chemistry, Babasaheb Bhimrao Ambedkar University (A Central University), Lucknow, India   Email: jawaharlj@bbau.ac.in   Email: jatjawahar@gmail.com
,
Puneet Kumar
a   Department of Chemistry, Babasaheb Bhimrao Ambedkar University (A Central University), Lucknow, India   Email: jawaharlj@bbau.ac.in   Email: jatjawahar@gmail.com
,
Anil K. Khatana
b   Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS-Campus, Raebareli Road, Lucknow, India
,
a   Department of Chemistry, Babasaheb Bhimrao Ambedkar University (A Central University), Lucknow, India   Email: jawaharlj@bbau.ac.in   Email: jatjawahar@gmail.com
,
Ajay K. Yadav
a   Department of Chemistry, Babasaheb Bhimrao Ambedkar University (A Central University), Lucknow, India   Email: jawaharlj@bbau.ac.in   Email: jatjawahar@gmail.com
,
b   Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS-Campus, Raebareli Road, Lucknow, India
,
a   Department of Chemistry, Babasaheb Bhimrao Ambedkar University (A Central University), Lucknow, India   Email: jawaharlj@bbau.ac.in   Email: jatjawahar@gmail.com
› Author Affiliations
J.L.J. would like to thank the Science and Engineering Research Board of the Department of Science and Technology (DST-SERB; YSS/2015/000838) and the University Grants Commission (UGC, New Delhi; UGC-BSR Grant No. F.30-382/2017). S.V. expresses her gratitude to the Council of Scientific and Industrial Research (CSIR), New Delhi, India for a research fellowship.
Further Information

Publication History

Received: 26 April 2020

Accepted after revision: 29 April 2020

Publication Date:
25 May 2020 (online)


Published as part of the Special Topic Recent Advances in Amide Bond Formation

Abstract

A zinc(II)-catalyzed single-step protocol for the Beckmann rearrangement using hydroxylamine-O-sulfonic acid (HOSA) as the nitrogen source in water was developed. This direct method efficiently produces secondary amides under open atmosphere in a pure form after basic aqueous workup. It is environmentally benign and operationally simple.

Supporting Information