Isonitriles startg

Acetylene passed slowly at 85° into a soln. of tert-buiy isocyanide and Ni-acetate in 1,2-didilorethane until spectroscopy shows disappearance of the startg. isonitrile after ca. 10 hrs. -> 5-t rr-butylamino-l-t rt-butyl-2-cyanopyrrole. Y 77%. F. e. and catalysts s. M. Jautelat and K. Ley, Synthesis 1970, 593. 

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