References
- Fishbein , P. L. and Moore , H. W. 1984 . J. Org. Chem. , 49 : 2190
- Biffin , M. C. , Miller , J. and Paul , D. B. 1971 . “ Introduction of the Azido Group ” . In The Chemistry of the Azido Group , Edited by: Patai , S. 61 New York : J. Wiley and Sons Inc. .
- Generation of the ketene from 3b was not completely obvious since the possibility of H-atom abstraction from the isopropyl group by a nitrene intermediate was also considered to be a possibility.
- Hachihama , Y. and Shono , T. 1955 . J. Chem. Soc. Japan Ind. Chem. Sec. , 58 : 692 Chem. Abstr. 50:12015e). The procedure for making the pseudoester was from
- Ward , R. S. 1980 . “ The Preparation of Ketenes ” . In The Chemistry of Ketenes, Allenes and Related Compounds , Edited by: Patai , S. 223 – 227 . New York : J. Wiley and Sons .