Synlett 2017; 28(04): 461-466
DOI: 10.1055/s-0036-1589717
letter
© Georg Thieme Verlag Stuttgart · New York

Iodine/Hydrogen Peroxide Promoted Intramolecular Oxidative C–O Bond Formation in Ethanol at Room Temperature: A Green Approach to 1,3-Oxazines

Mohit L. Deb*
a   Department of Applied Sciences, GUIST, Gauhati University, Guwahati, 781014, Assam, India   Email: mohitdd.deb@gmail.com   Email: baruah.pranjal@gmail.com
,
Paran J. Borpatra
a   Department of Applied Sciences, GUIST, Gauhati University, Guwahati, 781014, Assam, India   Email: mohitdd.deb@gmail.com   Email: baruah.pranjal@gmail.com
,
Prakash J. Saikia
b   Analytical Chemistry Division CSIR-NEIST, Jorhat-785006, Assam, India
,
Pranjal K. Baruah*
a   Department of Applied Sciences, GUIST, Gauhati University, Guwahati, 781014, Assam, India   Email: mohitdd.deb@gmail.com   Email: baruah.pranjal@gmail.com
› Author Affiliations
Further Information

Publication History

Received: 16 September 2016

Accepted after revision: 02 November 2016

Publication Date:
18 November 2016 (online)


Abstract

An I2/H2O2-promoted intramolecular C–O bond-formation reaction of a variety of 1-(aminoalkyl)-2-naphthols or 2-(aminoalkyl)phenols to give the corresponding 1,3-oxazines was developed. The reaction is simple, atom-economic, and proceeds smoothly at room temperature under metal-free conditions in ethanol as solvent.

Supporting Information