DEOXYGENATION OF ISOCYANATES TO ISONITRILES; A MECHANISTIC STUDY BY NUCLEAR MAGNETIC RESONANCE
Carbon-13 NMR has been used to show that the deoxygenation of isocyanates to isonitriles with t-butyldiphenylsilyl lithium proceeds via the intermediates (7 and 8).The silyl carboxamide (1) can be isolated but is thermally unstable rearranging to a mixture of silyl formamides (2).The spectroscopic properties of the silyl carboxamide (1) were found to be substantially different from those previously claimed for such compounds.
Baldwin, Jack E.,Derome, Andrew E.,Riordan, Peter D.