REGIOCHEMICAL CONTROL OF THE RING-OPENING OF 1,2-EPOXIDES BY MEANS OF CHELATING PROCESSES .2. SYNTHESIS AND REACTIONS OF THE CIS-OXIDE AND TRANS-OXIDE OF 4-[(BENZYLOXY)METHYL]CYCLOHEXENE, 3-CYCLOHEXENEMETHANOL, AND METHYL 3-CYCLOHEXENECARBOXYLATE