... of methanol wa ~ refluxed for 60 hours. The insoluble in- organic salts were removed and the filtrate was concentrated to % the original volume. ... (10) KOHLER, TISHLER, POTTER, ?LSD THOXPSON, J . Am. CAem. ... 6, 1947; Chem. (12) MARVEL ASD ECK, Org. Syntheses, Coll. ...