GB684647A - Manufacture of thiosemicarbazide and substitution derivatives thereof - Google Patents

Manufacture of thiosemicarbazide and substitution derivatives thereof

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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
Application number
GB30378/50A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Publication of GB684647A publication Critical patent/GB684647A/en
Expired legal-status Critical Current

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  • 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.
GB30378/50A 1949-12-12 1950-12-12 Manufacture of thiosemicarbazide and substitution derivatives thereof Expired GB684647A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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