Claims
- 1. Process for the manufacture of sulphonium salts of the formula ##STR61## wherein the two B's independently of one another represent a polymethylene ring with 4 to 7 methylene groups and can be substituted by alkyl groups with 1 to 4 carbon atoms, D denotes 4,4'-diphenylylene, 1,5- or 2,6-naphthylene, or a 9,10-dihydrophenanthrene, or a dibenzofurane radical which is bonded to the --CH.sub.2 -- groups in the 2,7-position, which comprises reacting a compound of the formula
- X--CH.sub.2 13 D--CH.sub.2 --X
- wherein X denotes halogen or a ##STR62## group, wherein X.sub.1 represents an aliphatic, cycloaliphatic or aromatic hydrocarbon radical, especially alkyl having 1 to 6 carbon atoms or phenyl, and D has the meaning indicated above, in a strongly acid medium at a temperature of about -20.degree. C to 120.degree. C and in a molar ratio of at least 1:2, with an organic sulphide of the formula ##STR63## wherein B has the given meaning and M represents the anion of the strong acid and n denotes the number 1 or 2.
- 2. Process according to claim 1, wherein X denotes chlorine or bromine and D denotes 4,4'-diphenylylene.
- 3. Process according to claim 1, in which B together with the S atom forms a tetrahydrothiophene, thiane, or thiepane.
- 4. Process according to claim 1, wherein an inorganic acid is used as the strongly acid medium.
- 5. Process according to claim 4, wherein hydrochloric acid, hydrobromic acid, hydrofluoric acid, perchloric acid, sulphuric acid or phosphoric acid is used as the inorganic acid.
- 6. Process according to claim 4, wherein aqueous sulphuric acid or aqueous hydrochloric acid is used.
Priority Claims (2)
Number |
Date |
Country |
Kind |
9852/72 |
Jun 1972 |
CH |
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9853/72 |
Jun 1972 |
CH |
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Parent Case Info
This is a divisional of application Ser. No. 374,142, filed on June 27, 1973 now U.S. Pat. No. 4,016,203.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3270034 |
Greenbaum |
Aug 1966 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
374142 |
Jun 1973 |
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