Vanillil was subjected to the action of a number of reducing agents in an attempt to prepare all of its monomolecular reduction products. In addition to the already known hydrovanilloin, three new vanillil reduction products, namely, vanilloin, desoxyvanilloin and bivanillyl were prepared in high yield directly from vanillil. 4, 4'-Dihydroxy-3, 3'-dirnethoxystilbene could not be prepared directly from vanillil by reduction but was easily prepared in good yield by ...