References
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- Hegarty , A. F. 1979 . Comprehensive Organic Chemistry , Edited by: Barton , D.H. R. and Ollis , W. D. Vol. 2 , 1084 Oxford : Pergamon Press . one possible explanation is that the second (tertiary) basic centre in (6) induces facile conversion to the isocyanates RNCO, the ease of this transformation reflecting the relative basicities of the amines (2)-(4)
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- Carbamates (10c, e) and (12) were not isolated and characterised.
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