Journal of Organic Chemistry p. 1471 - 1474 (1983)
Update date:2022-09-26
Topics:
Snider, Barry B.
Jackson, Andrew C.
Reaction of a 1,4-diaryl-1-butene (7) with paraformaldehyde and the appropriate alkylaluminum halide generates the cation 8, via addition of formaldehyde to the double bond, which cyclizes to give the aryltetralin 9.Reaction of 1,4-diphenyl-2-butene (6a) with paraformaldehyde and methylaluminum sesquichloride gives the ene adduct 5a, which reacts further, analogously to 7, to give 4a which possesses the aryltetralin lignan skeleton.
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