Issue 35, 2017

Direct observation of methoxycarbonylnitrene

Abstract

The simplest alkoxycarbonylnitrene, CH3OC(O)N, has been generated through laser (266 and 193 nm) photolysis of CH3OC(O)N3 and CH3OC(O)NCO and subsequently characterized by IR (15N, D-labelling) and EPR (|D/hc| = 1.66 cm−1 and |E/hc| = 0.020 cm−1) spectroscopy in cryogenic matrices. Two conformers of the nitrene, with the CH3 group being in syn or anti configuration to the C[double bond, length as m-dash]O bond, have been unambiguously identified. Further UV light irradiation (365 nm) of the nitrene results in isomerization to CH3ONCO, completing the frequently explored mechanism for the Curtius-rearrangement of CH3OC(O)N3.

Graphical abstract: Direct observation of methoxycarbonylnitrene

Supplementary files

Article information

Article type
Communication
Submitted
14 Mar 2017
Accepted
06 Apr 2017
First published
07 Apr 2017

Chem. Commun., 2017,53, 4783-4786

Direct observation of methoxycarbonylnitrene

H. Li, Z. Wu, D. Li, H. Wan, J. Xu, M. Abe and X. Zeng, Chem. Commun., 2017, 53, 4783 DOI: 10.1039/C7CC01926B

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