References
- Leonard , N. J. , Diassl , P. A. and Nelson , V. R. 1968 . Ibid , 90 : 3891 Inter alia, subsequent publications
- Sanders , E. B. , Bennasar , M. L. and Zulaica , E . 1986 . J. Org. Chem. , Inter alia
- Leonard , N. and Weber , H . 1972 . Chem. Ber. , 105 : 368 For lactam formation as a consequence of neighboring group participation see
- Yoshifuji , S . Tetrahedron Lett , 1979 809
- Fujii , T . 1984 . Heterocydes , 22 : 1805 preceding publications
- Bosch , J. , Mauleón , D. , Feliz , N. and Granados , R. 1983 . J. Org. Chem. , 48 : 4836
- All new compounds revealed appropriate spectral (IR, 1H NMR, 13C NMR) characteristics and gave satisfactory elemental or HRMS analyses
- Carbon chemical shifts in ppm downfield from Me4Si [δ(Me4Si) - δ(CDCl3) + 76.9 ppm] are depicted on the formula
- Prior to work-up the reaction medium was treated with an excess of sodium borohydride for the reduction of products in the imine oxidation level
- Thesing , J. and Sirrenberg , W . 1959 . Chem. Ber , 92 : 1748
- Bonnett , R . 1964 . Ibid , : 2445 For two exceptions of imine formation see
- Kessler , H. , Möhrle , H. and Zimmerman , G. 1977 . J. Org. Chem. , 42 : 66