GB285080A - Processes for preparing tetrazoles - Google Patents

Processes for preparing tetrazoles

Info

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
Application number
GB3484/28A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB285080A publication Critical patent/GB285080A/en
Expired legal-status Critical Current

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.
GB3484/28A 1927-02-11 1928-02-03 Processes for preparing tetrazoles Expired GB285080A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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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