6a, 10a- trans-hexahydro-dibenzo-pyrazol discussed production method

摘要

The title compds. I [R=C5-10 alkyl, alkenyl; C5-8 cycloalkyl, cycloalkenyl; R1 = H, Me, or Et! were prepd. Thus, 1.25g 3-methoxy - 5-(1,1-dimethylheptyl) phenol in 25 ml dichloromethane contg. 1.008g 1-methoxy-4-(1-hydroxy-1-methyl-ethyl)-1,4-cyclohexadiene was dissolved in 0.09g water in the presence of SnCl4 to give 5.8% dl- cis-1-methoxy-3-(1,1-dimethylheptyl)-6,6-dimethyl-6,6a,7,8,10, 10a- hexahydro-9H-dibenzo[b,d -pyrane-9-one and 42% of its transisomer.