Abstract:
In the reactor for carrying out catalytic organic reactions in the gas phase, having reaction tubes (A) arranged between tube plates (B), the reaction tubes have an internal diameter in the range from 0.5 to 3 cm, the reaction tube length/internal diameter ratio is between 2 and 10, and a fluid heat transfer medium flows in the lateral direction around the reaction tubes (A). The tube bundle reactor is particularly suitable for exothermic organic reactions. … …
Abstract:
The invention relates to a device for carrying out, in a substantially isothermal manner, a heterogeneously catalysed reaction in a gas phase with high heat tonality. The inventive device comprises at least one reactor chamber (101) with an inlet (131, 141) and an outlet (143). The reactor chamber is defined by heat dissipating walls, lying at a substantially constant distance of /m and good thermal conductibility; the reaction gas in the reactor chamber flows at a rate of >/= 200 m per m surface area per hour; and a heat exchange medium flows on the side of the reactor wall opposite the reactor chamber.
Abstract:
The invention relates to a device for carrying out, in a substantially isothermal manner, a heterogeneously catalysed reaction in a gas phase with high heat tonality. The inventive device comprises at least one reactor chamber (101) with an inlet (131, 141) and an outlet (143). The reactor chamber is defined by heat dissipating walls, lying at a substantially constant distance of /m and good thermal conductibility; the reaction gas in the reactor chamber flows at a rate of >/= 200 m per m surface area per hour; and a heat exchange medium flows on the side of the reactor wall opposite the reactor chamber.
Abstract:
A process for preparing 3-isopropyl-1H-2,1,3-benzothiadiazin-4 (3H)-one 2,2-dioxide (I) or a salt of Iwhich comprises reacting anthranilic isopropylamide IIsimultaneously with sulfur trioxide or chlorosulfonic acid in the presence of an organic base or with adducts of sulfur trioxide and organic basesandphosphorus oxychloride at from 50° C. to the reflux temperature, followed, if appropriate, by conversion into its salts, is described.
Abstract:
The invention relates to a method for the preparation of the compound given above in the title or its salt with the formula By the method isopropylamide of the anthranylic acid with the formula reacts simultaneously with sulpur trioxide or chlorsulphonic acid in the presence of an organic base, or with adducts of sulphur trioxide and organic bases and with phosphorus oxychloride at temperatures ranging from 50 deg.C to the boiling temperature under influx. Then optionally the product can be converted into its salt. 10 claims
Abstract:
A process for preparing 3-isopropyl-1H-2,1,3-benzothiadiazin-4 (3H)-one 2,2-dioxide (I) or a salt of Iwhich comprises reacting anthranilic isopropylamide IIsimultaneously with sulfur trioxide or chlorosulfonic acid in the presence of an organic base or with adducts of sulfur trioxide and organic basesandphosphorus oxychloride at from 50° C. to the reflux temperature, followed, if appropriate, by conversion into its salts, is described.