References
- Wulff , W. D. 1990 . Comprehensive Organic Synthesis , vol. 5 , p 1065 London : Pergamon Press .
- Doetz , K. H. 1990 . New J. Chem. , 14 : 433
- Anderson , B. A. , Bao , J. , Brandvold , T. A. , Challener , C. A. , Wulff , W. D. , Xu , Y.-C and Rheingold , A. L. 1993 . J. Am. Chem. Soc. , 115 : 10671
- Meric , C. A. and Xu , D. 1991 . J. Am. Chem. Soc. , 113 : 7418
- Doetz , K. H. and Deitz , R. 1978 . Chem. Ber. , 111 : 2517
- Wulff , W. D. , McCallum , J. S. and Kunng , F.-A. 1988 . J. Am. Chem. Soc. , 110 : 7419 and references therein.
- Chan , K. S. and Wulff , W. D. 1986 . J. Am. Chem. Soc. , 108 : 5229 At this point of time, only one related example of such reaction has been [3+2] dipolar cycloaddition of pentacarbonyl[(alkoxy)(alkynyl)-carbene]chromium with diazomethane, see:
- Newton , C. G. and Ramsden , C. A. 1982 . Tetrahedron , 38 : 2965
- Potts , K. T. 1984 . 1,3-Dipolar Cycloaddition Chemistry , vol. 2 , New York : Wiley .
- Potts , K. T. , Baum , J. and Houghton , E. 1974 . J. Org. Chem. , 39 : 3631
- McEwen , W. E. , Kanktkar , K. B. and Hung , W. M. 1971 . J. Am. Chem. Soc. , 93 : 4484 C-5 Atom of above both types of 1,3-dipoles attacks β-position of carbene complex owing to the delocalization of the exocyclic negative charge to the C-5 position of thiazole nucleus. For the regiochemistry of cycloaddition of these types of masked 1,3-dipoles. see: