GB285080A - Processes for preparing tetrazoles - Google Patents
Processes for preparing tetrazolesInfo
- Publication number
- GB285080A GB285080A GB3484/28A GB348428A GB285080A GB 285080 A GB285080 A GB 285080A GB 3484/28 A GB3484/28 A GB 3484/28A GB 348428 A GB348428 A GB 348428A GB 285080 A GB285080 A GB 285080A
- Authority
- GB
- United Kingdom
- Prior art keywords
- esters
- amidoximes
- amino
- chloride
- tetrazoles
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D257/00—Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms
- C07D257/02—Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms not condensed with other rings
- C07D257/04—Five-membered rings
- C07D257/06—Five-membered rings with nitrogen atoms directly attached to the ring carbon atom
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
285,080. Boehringer, A., (trading as Boehringer Sohn, C. H.). Feb. 11, 1927, [Convention date]. Addition to 280,529. Samples furnished. Tetrazoles.-C-Amino-tetrazoles are obtained by treating esters of amidoximes, particularly the sulphonic esters or so-called Beckmann transformation products thereof, with azides or free hydrazoic acid: or by treating the amidoximes in the presence of hydrazoic acid with substances, such as thionvl chloride and phosphorus oxy- or penta-chloride, which form esters with the amidoximes, the esters then undergoing the Beckmann transformation. The reaction takes place with at least an equimolecular proportion of the azide and in the presence of water or an organic solvent, to which a basic substance may be added. According to the examples, (1) 1-benzyl-5-amino 1:2:3:4- tetrazole is produced by esterifying phenylaceticamidoxime with benzenesulphonic acid and heating the product with alcoholic sodium azide, (2) 1-phenyl-5-amino-1:2:3:4-tetrazole results when benzenyl-amidoxime is first esterified with benzenesulphonic chloride in caustic soda solution and the ester then boiled with alcoholic sodium azide. The Specification as open to infection under Sect. 91 (3) (a) states also that ethers of C-oxvtetrazoles are obtained in the same way from hydroxamic acid esters. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE285080X | 1927-02-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB285080A true GB285080A (en) | 1929-04-18 |
Family
ID=6055416
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3484/28A Expired GB285080A (en) | 1927-02-11 | 1928-02-03 | Processes for preparing tetrazoles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB285080A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995018796A1 (en) * | 1994-01-10 | 1995-07-13 | Thiokol Corporation | Method for synthesizing 5-aminotetrazole |
US5500059A (en) | 1993-08-02 | 1996-03-19 | Thiokol Corporation | Anhydrous 5-aminotetrazole gas generant compositions and methods of preparation |
US6881742B1 (en) | 1999-10-06 | 2005-04-19 | Basf Aktiengesellschaft | Benzyl amidoxime derivatives, intermediate products and method for their production and use as fungicides |
-
1928
- 1928-02-03 GB GB3484/28A patent/GB285080A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5500059A (en) | 1993-08-02 | 1996-03-19 | Thiokol Corporation | Anhydrous 5-aminotetrazole gas generant compositions and methods of preparation |
WO1995018796A1 (en) * | 1994-01-10 | 1995-07-13 | Thiokol Corporation | Method for synthesizing 5-aminotetrazole |
US5451682A (en) * | 1994-01-10 | 1995-09-19 | Thiokol Corporation | Method for synthesizing 5-aminotetrazole |
US6881742B1 (en) | 1999-10-06 | 2005-04-19 | Basf Aktiengesellschaft | Benzyl amidoxime derivatives, intermediate products and method for their production and use as fungicides |
US7101900B2 (en) | 1999-10-06 | 2006-09-05 | Basf Aktiengesellschaft | Benzyl amidoxime derivatives, intermediate products and method for their production and use as fungicides |
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