40 57 7 64 60 55 11 66 120 52 17 69 48* 43 12 55 a Maximum internal temperature, then as the reaction subsided, the bath temperature was allowed to rise to this value.* The boric acid was omitted. Isolated by the procedure of Cromwell, Caughlin and Gilbert, THIS JOUR-NAL, 66,401 (1944). Not isolated.# Twelve hours at a bath temperature of 155'. until the internal temperature was 110-115, then 25 ml. of concentrated sulfuric acid was added dropwise ...
