| 摘要 |
1,155,642. Diazosulphonates. TECNIFAX CORP. 16 June, 1966 [16 June, 1965], No. 27023/66. Heading C2C. [Also in Division G2] Diazosulphonates are prepared by treating the corresponding diazonium zinc chloride salt with hydrochloric acid to bring pH to between 2À1 and 2À3 and then adding sodium sulphite to precipitate the diazosulphonate. Diazosulphonates thus prepared are 1-[N-3-azabicyclo[3,2,2]- non - 5,7,8 - triene] - naphthalene - 4 - diazosulphonate, benzothiazole - 6 - diazosulphonate, carbazole - 2 - diazosulphonate, indazole - 6 - diazosulphonate, 2 - pyrrolidino - 5 - diazosulphonate, 7 - pyrrolidine - 24,44 - 3 - one - 1,4- benzothiazine - 6 - diazosulphonate, benzothiopyran - 7 - diazosulphonate, N - benzylphenoxazine - 3 - diazosulphonate, N - methyl phenothiazine - 3 - diazosulphonate, N - methylbenzopyrrole - 5 - diazosulphonate and 1-(1- [2,4 - di - imido] - 1,3,5 - triazine) - 2,5 - dimethoxy-benzene-4-diazosulphonate. Others are listed under Table I. |
