F. Bigi et al., REACTION BETWEEN PHENOLS AND ISOPRENE UNDER ZEOLITE CATALYSIS - HIGHLY SELECTIVE SYNTHESIS OF CHROMANS AND O-ISOPENTENYLPHENOLS, Synthesis, (3), 1998, pp. 301-304
Chromans 3 and o-isopentenylphenols 4 are synthesized in satisfactory
to good yields and selectivities by the reaction of phenols and isopre
ne in the presence of the commercially available acid faujasite zeolit
e HSZ-360.