References
- Collins , J. C. , Hess , W. W. and Frank , F. J. 1968 . Tetrahedron Lett. , : 3363
- Ratcliffe , R. and Rodehorst , R. 1970 . J. Org. Chem. , 35 : 4000 – 4002 .
- The isolated product (by silica gel chromatography) was characterized by NMR and MS spectrometry and the data were found to be identical with that from an authentic sample: 1H-NMR (CDCl3) δ 10.17 (s, 1 H), 8.41 (d, 2 H, J = 8.7 Hz), 8.09 (d, 2 H, J = 8.7 Hz); EIMS m/z (relative intensity) 151 (M+, 100), 150 (M+ - H, 87), 105 (M+ - NO2, 23).
- These two compounds (2a and 2b) were previously synthesized by oxidation of the corresponding styrenes, using lead tetraacetatea and thallium (III) nitrate,b respectively
- Lethbridge , A. , Norman , R. O. C. and Thomas , C. B. 1973 . J. Chem. Soc. Perkin I , : 35 – 38 .
- McKillop , A. and Hunt , J. D. 1970 . Tetrahedron Lett. , 60 : 5275 – 5280 .
- Bijoy , P. and Rao , G. S. R. S. 1993 . Synth. Commun. , 23 : 2701 – 2708 .