HIGH YIELDS OF NITRENE INSERTION INTO UNACTIVATED C-H BONDS - FIRST-EXAMPLE OF X-RAY CRYSTALLOGRAPHIC AND F-19 NMR ANALYSIS OF THE PHOTOCHEMICALLY PRODUCED C-H INSERTED ADDUCT

Photolysis of 4-azido-tetrafluorobenzonitrile results in the highest y ield reported to date, (75-80% as estimated from F-19 NMR spectroscopy ) for nitrene insertion into the unactivated C-H bond of cyclohexane; the photochemical adduct is characterized by H-1 and C-13 NMR spectros copy and the structure is confirmed by X-ray crystallography for the f irst time.