Strontium carbonate → 13-Ethyl-3-methoxy-6-methyl-17,17-ethylenedioxygona-1,3,5(10),8-tetraene

Participants

Reaction Steps

Hydrogenate dl-13β-ethyl-3-methoxy-6-methyl-17,17-ethylenedioxygona-1,3,5(10),8,14-pentaene (15.3 g) in benzene (300 ml) with 2% palladized strontium carbonate (5.0 g). The uptake of 1,040 ml. will require 10 minutes. Work up in the usual manner, then recrystallize from 95% ethanol (110 ml) to obtain dl-13β-ethyl-3-methoxy-6-methyl-17,17-ethylenedioxygona-1,3,5(10),8-tetraene (11.0 g. of diamond-shaped plates; 71.8% yield), m.p. 122°-124°; ultraviolet absorption peak at 280 mμ (ε15,140).

Provenance & Evidence