Reaction of benzoxasilocines with aromatic aldehydes: Synthesis of homopterocarpans.
Condensation of 2H-benzo[g][1,2]oxasilocines with aromatic aldehydes in the presence of boron trifluoride affords mixtures of cis/trans 2-phenyl-3-vinylchromans with moderate yields. These can be transformed into homopterocarpans, a synthetic group of substances homologous to the natural isoflavonoid pterocarpans.
Alvarez-Corral
Míriam
M
Dpto. Química Orgánica, Universidad de Almería, 04120-Almería, Spain. malvarez@ual.es
López-Sánchez
Cristóbal
C
Jiménez-González
Leticia
L
Rosales
Antonio
A
Muñoz-Dorado
Manuel
M
Rodríguez-García
Ignacio
I