Method A.-A solution of 0.5 g of 2c in 50 ml of hot alcohol was treated with 2 g of sodium sulfide, refluxed overnight, and filtered; the hot filtrate was diluted with water and chilled. The solid was collected and crystallized from aqueous alcohol giving 0.3 g of 15: mp 107-108'; mass spectrum m/e 337 (loo), 336 (52), 232 (19), 230 (14), 168.5, 115 (7), 105 (26), and 77 (24).
