A Short Synthesis of γ-Lactams Via the Spontaneous Ring Expansion of β-Lactams

References

• Black , T. H. , DuBay , W. J. and Tully , P. S. 1988 . J. Org. Chem. , 53 : 5922 Black, T.H.; Hall, J.A.; Sheu, R.G. J. Org. Chem. 1988, 53, 2371
   Web of Science ®Google Scholar
• Black , T. H. and Maluleka , S. L. 1989 . Tetrahedron Lett. , 30 : 531
   Web of Science ®Google Scholar
• Black , T. H. , Eisenbeis , S. A. , McDermott , T. S. and Maluleka , S. L. 1990 . Tetrahedron , 46 : 2307
   Google Scholar
• Black , T. H. and McDermott , T. S. 1991 . J. Chem. Soc., Chem. Commun. , : 184
   Google Scholar
• Black , T. H. , McDermott , T. S. and Brown , G. A. 1991 . Tetrahedron Lett. , 32 : 6501
   Web of Science ®Google Scholar
• Isaacs , N. S. 1976 . Chem. Soc. Rev. , 5 : 181
   Web of Science ®Google Scholar
• Moriconi , E. J. and Kelly , J. F. 1968 . J. Org. Chem. , 33 : 3036
   Web of Science ®Google Scholar
• Graf , R. 1968 . Angew. Chem. , 80 : 179
   Google Scholar
• Lombardo , L. 1987 . Org. Synth. , 65 : 81
   Google Scholar
• Hibino , J. I. , Okazoe , T. , Takai , K. and Nozaki , H. 1985 . Tetrahedron Lett. , 26 : 5579
   Web of Science ®Google Scholar
• Confirmed by reduction with LiAIH4 to the corresponding octahydroindole and correlation of the 1H-NMR methyl absorbance (1.11 ppm) with the literature value (1.12 ppm vs. 1.00 ppm for the trans isomer; cf. Kelly, R.B.; Alward, S.J. Can J. Chem. 1978, 56, 320
   Google Scholar
• Durst , T. and O'Sullivan , M. J. 1970 . J. Org. Chem. , 35 : 2043
   Web of Science ®Google Scholar