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DOI: 10.1055/sos-SD-018-00070

Braverman, S.; Cherkinsky, M.; Birsa, M. L.Science of Synthesis, (200518124.

The Curtius rearrangement involves pyrolysis of acyl azides 151 to yield isocyanates (Scheme 86). The reaction probably involves a nitrene intermediate; however, there is no evidence for a free nitrene and it is possible that the steps are concerted.[‌419‌]

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