Hb. Sun et al., ENANTIOSELECTIVE SYNTHESIS AND CD ASSIGNMENT OF ABSOLUTE-CONFIGURATION OF EPOXYCHROMANS, Bulletin des Societes chimiques belges, 106(1), 1997, pp. 47-49
A highly practical asymmetric epoxidation procedure for the synthesis
of optically pure epoxychromans has been developed which employs hydro
gen peroxide as the oxidant and the Jacobsen's complexes as the cataly
sts. Absolute configuration of the epoxychromans was determined by the
dichroic circular method.