RO93222B1 - Process for preparing 1,4-dihydroxy-2-naphthalic acid - Google Patents

Process for preparing 1,4-dihydroxy-2-naphthalic acid

Info

Publication number
RO93222B1
RO93222B1 RO122686A RO12268686A RO93222B1 RO 93222 B1 RO93222 B1 RO 93222B1 RO 122686 A RO122686 A RO 122686A RO 12268686 A RO12268686 A RO 12268686A RO 93222 B1 RO93222 B1 RO 93222B1
Authority
RO
Romania
Prior art keywords
dihydroxy
preparing
naphthalic acid
sodium
hydrolysis
Prior art date
Application number
RO122686A
Other languages
Romanian (ro)
Other versions
RO93222A2 (en
Inventor
Suzana Stefania Crisan
Ludovic Fodor
Original Assignee
COMBINATUL DE îNGRASAMINTE CHIMICE
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 COMBINATUL DE îNGRASAMINTE CHIMICE filed Critical COMBINATUL DE îNGRASAMINTE CHIMICE
Priority to RO122686A priority Critical patent/RO93222B1/en
Publication of RO93222A2 publication Critical patent/RO93222A2/en
Publication of RO93222B1 publication Critical patent/RO93222B1/en

Links

Landscapes

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

Abstract

Inventia se refera la un procedeu pentru obtinerea acidului 1,4-dixidroxi-2-naftoic, prin condensarea dietilftalatului cu dietilsuccinat urmata de hidroliza intermediarului forma conform caruia, reactia de condensare are loc la temperatura de 30...120 degree C si la presiune atmosferica în mediul de etilat de sodiu, iar hidroliza are loc cu hidroxid de sodiu la temperatura ambianta în prezenta ditionului de sodiu.The invention relates to a process for the preparation of 1,4-dihydroxy-2-naphthoic acid by condensation of diethyl phthalate with diethyl succinate followed by hydrolysis of the intermediate according to which the condensation reaction takes place at a temperature of 30 to 120 ° C and under pressure atmospheric in the sodium ethylate medium and the hydrolysis is carried out with sodium hydroxide at ambient temperature in the presence of sodium.

RO122686A 1986-03-22 1986-03-22 Process for preparing 1,4-dihydroxy-2-naphthalic acid RO93222B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO122686A RO93222B1 (en) 1986-03-22 1986-03-22 Process for preparing 1,4-dihydroxy-2-naphthalic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO122686A RO93222B1 (en) 1986-03-22 1986-03-22 Process for preparing 1,4-dihydroxy-2-naphthalic acid

Publications (2)

Publication Number Publication Date
RO93222A2 RO93222A2 (en) 1987-12-30
RO93222B1 true RO93222B1 (en) 1987-12-31

Family

ID=20119182

Family Applications (1)

Application Number Title Priority Date Filing Date
RO122686A RO93222B1 (en) 1986-03-22 1986-03-22 Process for preparing 1,4-dihydroxy-2-naphthalic acid

Country Status (1)

Country Link
RO (1) RO93222B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003083063A2 (en) * 2002-03-22 2003-10-09 Triad Therapeutics, Inc. Common ligand mimics: naphtoates

Also Published As

Publication number Publication date
RO93222A2 (en) 1987-12-30

Similar Documents

Publication Publication Date Title
RO86213B (en) Process for preparing isobutene
JPS54122253A (en) Preparation of cis-alkylcyclohexanol
RO87040B (en) Process for the preparation de n-phosphonomethylglycine
KR850008678A (en) Method for preparing 2-amino-3-ethoxycarbonylamino-6-cP-fluoro-benzylamino) -pyridine gluconate
RO93222B1 (en) Process for preparing 1,4-dihydroxy-2-naphthalic acid
SE8601482D0 (en) PROCEDURE FOR THE PREPARATION OF Oligosaccharides
KR900007859A (en) Method for preparing N-acyl-aminomethyl phosphonate
JPS5681570A (en) Manufacture of 1hh1*2*44triazole
RO85387B (en) Process for the stereospecific preparation of 5-phenyl-2s-pentanole
ES2004461A6 (en) Boric oxide preparation method
KR840001530A (en) Dispersant Composition
ES8308823A1 (en) Process for producing p-tert.-octyl phenol by catalytic alkylation of phenol.
UA8020A1 (en) Process for the preparation of 2,4-dichloro-5-fluoro-benzoic acid
DE3563858D1 (en) Process for the preparation of l-alpha-aminoacids
KR840002765A (en) Selective preparation of 2-hydroxynaphthalene-6-carboxylic acid
SE9103609L (en) PROCEDURES FOR THE PREPARATION OF ALKALIMETAL PHOSPHATE
ES8702874A1 (en) Process for the preparation of anthraquinone.
CA2092407A1 (en) Process for the preparation of 2,3-difluoro-6-nitrophenol
JPS55105696A (en) Production of organogermanium sesquioxide
SU666794A1 (en) Process for preparing dl-triptophan
GB1437210A (en) Process for preparing imidazole-4,5-dicarboxamide
SU421691A1 (en) METHOD OF OBTAINING 3-ISOPROPYLIDENOXINDOL08
SU372214A1 (en) ALL-UNIONAL I i iJAlLSJisJii -, -. - LMN1.C s'iA / fc BI &L; -Y ^ 1: CD I, ._ t
JPS5585538A (en) Separation of cis- and trans-1-methyl-4-isohexyl- cyclohexanecarboxylic acid
GB1135445A (en) Spiramycin monoesters and process for preparing the same