3,4,4a,5,6,7,8,8a-octahydrochromen-2-one

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Using the same procedure as described under A) but starting with a solution consisting of octahydrocoumarine (22 g, 145 mmoles) into 58 g of acetic acid and a supported catalyst obtained according to procedure a), there were obtained (after bulb to bulb distillation at 42 mbar, oven=175°) 10.4 g of 4-(1-cyclohexen-1-yl)-2-butanone (purity: 71%; yield: 33%). a supported catalyst obtained