1. For reviews see: W.Kirmse, ‘Carbene Chemistry,’ 2nd edn., Academic Press, New York, 1971;
2. ‘Carbenes,’ eds. R. A. Moss and M. Jones, Jr., vols. 1 and 2, Wiley, New York, 1978 and 1981;
3. ‘Methoden der Organischen Chemie,’(Houben-Weyl), ed. M. Regitz, vol. E19b ‘Carbene,’Thieme, Stuttgart, 1989.
4. Carbenes and carbenoids with neighboring heteroatoms
5. Cyclopropylidene insertion. Evidence for bicyclo[1.1.0]butan-2-olate formation