ES2026759A6 - Industrial procedure for obtaining a derived hydrazine - Google Patents

Industrial procedure for obtaining a derived hydrazine

Info

Publication number
ES2026759A6
ES2026759A6 ES9002525A ES9002525A ES2026759A6 ES 2026759 A6 ES2026759 A6 ES 2026759A6 ES 9002525 A ES9002525 A ES 9002525A ES 9002525 A ES9002525 A ES 9002525A ES 2026759 A6 ES2026759 A6 ES 2026759A6
Authority
ES
Spain
Prior art keywords
alpha
degree
hydrazine
obtaining
derived
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 - Lifetime
Application number
ES9002525A
Other languages
Spanish (es)
Inventor
Baro Miguel Ribalta
Giral Salvador Mirallas
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.)
Esteve Quimica SA
Original Assignee
Esteve Quimica SA
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 Esteve Quimica SA filed Critical Esteve Quimica SA
Priority to ES9002525A priority Critical patent/ES2026759A6/en
Priority to MX9101389A priority patent/MX9101389A/en
Publication of ES2026759A6 publication Critical patent/ES2026759A6/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Industrial procedure for obtaining a derived hydrazine with the chemical name L - [alpha] - hydrazine - 3,4 - dihydroxy - [alpha] - methylbenzene - propanoic monohydrate, characterized by comprising the following operational phases: By the reaction of the hydrochloride of L - [alpha] - amino - 3,4 - dimethoxy - [alpha] - methylbenzenepropionitryl with concentrated HCl at 80- 90 degree C, the corresponding acid is obtained, which is treated at 50-60 degree C in an aqueous medium with potassium cyanate in order to obtain L - [alpha] - (3,4 - dimethoxybenzyl) - [alpha] - methylhydantoic acid, which is subsequently reacted with sodium hypochlorite in an alkaline aqueous medium at 0 degree C, giving the corresponding derived hydrazine which, by treatment with hydrobromic acid at a concentration of 40-62% and at 100-120 degree C, gives rise to the product desired. It is applied in the treatment of Parkinson's disease.
ES9002525A 1990-10-05 1990-10-05 Industrial procedure for obtaining a derived hydrazine Expired - Lifetime ES2026759A6 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES9002525A ES2026759A6 (en) 1990-10-05 1990-10-05 Industrial procedure for obtaining a derived hydrazine
MX9101389A MX9101389A (en) 1990-10-05 1991-10-01 INDUSTRIAL PROCEDURE FOR THE OBTAINING OF A DERIVED HYDRACINE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9002525A ES2026759A6 (en) 1990-10-05 1990-10-05 Industrial procedure for obtaining a derived hydrazine

Publications (1)

Publication Number Publication Date
ES2026759A6 true ES2026759A6 (en) 1992-05-01

Family

ID=8269057

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9002525A Expired - Lifetime ES2026759A6 (en) 1990-10-05 1990-10-05 Industrial procedure for obtaining a derived hydrazine

Country Status (2)

Country Link
ES (1) ES2026759A6 (en)
MX (1) MX9101389A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100494170C (en) * 2006-12-26 2009-06-03 浙江工业大学 Preparing process of L-2-(3,4-dimethoxy benzyl)-2-ureido propionic acid
ES2333089A1 (en) * 2009-07-24 2010-02-16 Universitat Autonoma De Barcelona Procedure and intermediates for the preparation of l-carbidopa (Machine-translation by Google Translate, not legally binding)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100494170C (en) * 2006-12-26 2009-06-03 浙江工业大学 Preparing process of L-2-(3,4-dimethoxy benzyl)-2-ureido propionic acid
ES2333089A1 (en) * 2009-07-24 2010-02-16 Universitat Autonoma De Barcelona Procedure and intermediates for the preparation of l-carbidopa (Machine-translation by Google Translate, not legally binding)

Also Published As

Publication number Publication date
MX9101389A (en) 1992-06-05

Similar Documents

Publication Publication Date Title
HUP9802820A2 (en) Process for producing a chlorine dioxide-containing disinfectant solution for water treatment
EG22590A (en) Melamine of improved purity produced by high-pressure non-catalytic process
SE8402372L (en) WATER DISPERSIBLE, MODIFIED POLYURETHANE
BR9707701A (en) Processes for the production of chlorine dioxide and for the treatment of contaminated water, and apparatus for the manufacture of chlorine dioxide and for the disinfection of water containing contaminants.
GEP20053650B (en) Disinfectant Solution Based on Sodium Hypochlorite, and Process for Preparing It
ES2188014T3 (en) PROCESS FOR PREPARATION OF HIGH CONCENTRATION CHLORAMINE SOLUTIONS.
NZ326367A (en) Use of glutaprotamin like surfactants for cleaning and disinfecting sensitive medical instruments
HUT40436A (en) Process for production pirrolo-benzimidasoles and medical preparatives containing thereof
ES2026759A6 (en) Industrial procedure for obtaining a derived hydrazine
Wrabetz et al. Does acrolein contribute to the cytotoxicity of cyclophosphamide?
EP0356203A3 (en) Treatment of effluents
RU93058360A (en) METHOD OF OBTAINING CHLORINE DIOXIDE
ES2032219T3 (en) MANUFACTURING PROCEDURE OF 2-METHYL-PENTANODIAMINE BY HYDROGENATION OF 2-METHYL-GLUTARONITRILE.
BG102416A (en) Composition containing at least sodium hydrogencarbonate, and a method for its preparation and application
CA2295956A1 (en) Photonitrosation of cyclododecane in chloroform in quasi-anhydrous medium
BR9804983A (en) Processes for the purification of 1,1-difluoroethane in vinyl chloride and for the production of 1,1-difluoroethane, and, 1-1-difluoroethane.
AU3056900A (en) Method for making aqueous solutions of unsaturated quaternary ammonium salts
PL332898A1 (en) Method of regenerating antraquinone derivatives during a hydrogen peroxide synthesising process
DE3263861D1 (en) Process for the preparation of cyanogen chloride from hydrogen cyanide and chlorine
KR950011099B1 (en) Preparation of 1,1,1-trifluoro-2,2-dichloroethane
MD1295F1 (en) Process for obtaining an antiseptic preparation
Fajnshmidt et al. Thermochemical treatment of hot-forging instrument
JPS6280259A (en) Improvement of carburizing method
DE3663131D1 (en) Process for the preparation of aqueous ammonium sulphocyanide solutions
FR2275433A1 (en) Triiodoresorcinol prepn in higher yields - by iodinating resorcinol with iodine chloride in dil hydrochloric acid

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20001102