C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/267.9
C07D 295/02 (2006.01) C07C 303/32 (2006.01) C07C 309/42 (2006.01)
Patent
CA 2022618
PROCESS FOR PREPARING THE PIPERAZINE SALT OF 2,5-DIHYDROXYBENZENESULPHONIC ACID MONOTOSYLATE Abstract The process is characterized in that the diethyl- amine salt or the ammonium salt of 2,5-dihydroxybenzene- sulphonic acid is used as starting material, which salt is tosylated in an ammoniacal medium to lead in both cases to the production of the ammonium salt of 2,5- dihydroxybenzenesulphonic acid monotosylate, which in its turn is converted initially to the corresponding piperazine disalt which is separated in an aqueous medium, and finally in an aqueous-alcoholic medium the piperazine salt of 2,5-dihydroxybenzenesulphonic acid monotosylate, also known as piperazine sultosylate, is obtained. Medicinal applications.
Baro Josep M. R.
Fabrega Pons de Vall Josep M.
Giral Salvador M.
Baro Josep M. R.
Esteve Quimica S.a.
Fabrega Pons de Vall Josep M.
G. Ronald Bell & Associates
Giral Salvador M.
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