3938 NOTES The Journal of Organic Chemistry was neutralized with solid sodium bicarbonate and maintained faintly alkaline throughout the reaction period by further additions when needed.'After 4 days at room temperature 3.7 g of 4 had crystallized. Further crops of about this magnitude could be obtained by filtration every few days, but the ultimate yield w&s not determined: 140-155'dec, depending on the rate of heating; iimr ( ...