Ethylene Glycol → HCID 70505977, compound

Participants

Reaction Steps

A solution of 105 g of 3β-acetoxy-15β,16β-methylene-5-androsten-17-one in 1.05 l of methylene chloride was combined with 315 ml of ethylene glycol, 210 ml of triethyl orthoformate, and 10.5 g of p-toluene-sulfonic acid and agitated for 1 hour at room temperature. The reaction solution was combined with 40 ml of pyridine and diluted with ether, then washed with water, dried, and evaporated. The residue was triturated with pentane and vacuum-filtered, thus producing 109 mg of 3β-acetoxy-17,17-ethylenedioxy-15β,16β-methylene-5-androstene, mp 177°-178.5° C.

Provenance & Evidence