Walter Lwowski,* Richard A. de Mauriac,l and Margaret Thompson Department of Chemistry, New Mexico State University, Las Cruces, New Mexico 88003 Richard E. Wilde* and Sis-Yu Chen ... Department of Chemistry, Texas Tech University, Lubbock, Texas 79409 Recieved April 24, 1975 ... The photo-Curtius rearrangement of several substituted carbamoyl azides gives aminoisocyanates, PhHN- NCO, EtHN-NCO, Me2N-NC0, and EtzN-NCO. These can be ...