Journal of Organic Chemistry p. 4563 - 4565 (1992)
Update date:2022-08-03
Topics:
Alexakis, Alex
Lensen, Nathalie
Tranchier, Jean-Philippe
Mangeney, Pierre
Grignard reagents, in toluene solvent, display a strongly increased reactivity toward the hydrazone functionality.With the chiral synthon 1, a highly diastereoselective addition occurs, through chelation control, whereas with pyrazolines 4 and 9 only the d,l diastereomer is formed, leading to a very short synthesis of 1,3-diphenyl-1,3-diaminopropane (11).
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