GB684647A - Manufacture of thiosemicarbazide and substitution derivatives thereof - Google Patents
Manufacture of thiosemicarbazide and substitution derivatives thereofInfo
- Publication number
- GB684647A GB684647A GB30378/50A GB3037850A GB684647A GB 684647 A GB684647 A GB 684647A GB 30378/50 A GB30378/50 A GB 30378/50A GB 3037850 A GB3037850 A GB 3037850A GB 684647 A GB684647 A GB 684647A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thiosemicarbazide
- dithiocarbamate
- ammonium
- hydrazine sulphate
- hydrazine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Thiosemicarbazides R.NH.CS.NH.NH2, in which R is hydrogen or an alkyl, aryl, aralkyl or heterocyclic radical, are prepared by reacting hydrazine or a water-soluble salt thereof in an alkaline aqueous medium with a dithiocarbamate R.NH.CS.SX, where X is a cation. Examples are given of the preparation of (1) thiosemicarbazide from ammonium dithiocarbamate and hydrazine sulphate in the presence of aqueous caustic soda; (2) 4-phenylthiosemicarbazide from ammonium phenyldithiocarbamate and hydrazine sulphate; (3) 4-(31-methoxyphenyl)-thiosemicarbazide from ammonium 3-methoxyphenyl-dithiocarbamate and hydrazine sulphate; (4) 4-(41-carboxyphenyl)-thiosemicarbazide from ammonium 4-benzoic acid dithiocarbamate and hydrazine sulphate; (5) 2,4 - bis - (thiosemicarbazide - 4) - toluene from toluene - 2,4 - bis - (dithiocarbamic acid ammonium salt); (6) 4-(41-sulphonamido)-benzyl-thiosemicarbazide from potassium 4-sulphonamidobenzyl-dithiocarbamate and hydrazine sulphate; and (7) 4-(pyridyl-2)-thiosemicarbazide from pyridyl-2-dithiocarbamate and hydrazine sulphate. The dithiocarbamates may be prepared by reacting a primary amine R.NH2 with carbon disulphide and a base XOH, where R and X have the same meaning as given above.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH684647X | 1949-12-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB684647A true GB684647A (en) | 1952-12-24 |
Family
ID=4528760
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30378/50A Expired GB684647A (en) | 1949-12-12 | 1950-12-12 | Manufacture of thiosemicarbazide and substitution derivatives thereof |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB684647A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2789114A (en) * | 1955-10-28 | 1957-04-16 | Dow Chemical Co | Triethylamine salt of nu-(2-pyridyl)-dithiocarbamic acid |
-
1950
- 1950-12-12 GB GB30378/50A patent/GB684647A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2789114A (en) * | 1955-10-28 | 1957-04-16 | Dow Chemical Co | Triethylamine salt of nu-(2-pyridyl)-dithiocarbamic acid |
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