abstract |
1353905 Substituted naphtho-1,3,2-dioxaborin AGFA-GEVAERT 10 May 1971 [10 June 1970] 28144/70 Heading C2B [Also in Division C4] 2,2 - difluoro - 4 - (2 - acetanilidovinyl)- naphtho-[1,2-e]-1,3,2-dioxaborin is prepared by reacting diphenylformamidine, 2,2-difluoro-4- methylnaphtho-[1,2-e]-1,3,2-dioxaborin and acetic anhydride. The corresponding naphtho- [2,1-e] compound is prepared similarly. |