H. Setala et al., HORSE RADISH PEROXIDASE-CATALYZED OXIDATIVE COUPLING OF METHYL SINAPATE TO GIVE DIASTEREOISOMERIC SPIRO DIMERS, Journal of the Chemical Society. Perkin transactions. I, (9), 1994, pp. 1163-1165
The oxidative coupling of methyl sinapate with H2O2/horse radish perox
idase at pH 4 in the presence of methanol gives dimeric spiro structur
es of a novel type. The crystal structures of two diastereoisomers hav
e been determined. The coupling reaction shows some three selectivity.