New N-hydroxy carbamic acid trialkylsilyl derivatives: preparation and thermal reactions

Article abstract of DOI:10.1016/0022-328X(94)05264-C

New N-siloxy- or N-alkoxy-carbamic acid derivatives have been prepared.The crystal structure of N-siloxy-O-tert-butyl carbamate was determined.The thermal behaviour of these compounds was studied in the absence and in the presence of other reaction partners.The reaction products were identified by gas chromatography, gas chromatography-mass spectroscopy, IR spectroscopy and NMR.The experimental results can be explained by the formation of a radical-type transition state (carboxynitrene), detected by mass spectroscopy.Keywords: Silicon; Nitrene; Trimethylsilyl; Mass spectroscopy; Crystal structure