Tetrahedron Letters p. 6277 - 6280 (1986)
Update date:2022-08-04
Topics:
Kenny, Peter W.
Robinson, Michael J. T.
The formation of 1,3,5-triphenyl-2-pyrazoline 7 from chalcone and phenylhydrazine via 1,4-addition followed by an allowed 5-endo-trig cyclisation has been demonstrated by (13)C and (15)N labelling in time resolved (13)C NMR spectroscopy.
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