RO64159A - Procede et installation pour la preparation du dl-alpha-hydroxy-beta,beta-dimethyle gamma-butirolactame en systeme continu - Google Patents

Procede et installation pour la preparation du dl-alpha-hydroxy-beta,beta-dimethyle gamma-butirolactame en systeme continu

Info

Publication number
RO64159A
RO64159A RO7252272A RO7252272A RO64159A RO 64159 A RO64159 A RO 64159A RO 7252272 A RO7252272 A RO 7252272A RO 7252272 A RO7252272 A RO 7252272A RO 64159 A RO64159 A RO 64159A
Authority
RO
Romania
Prior art keywords
beta
butirolactam
alpha
hydroxy
plant
Prior art date
Application number
RO7252272A
Other languages
English (en)
Romanian (ro)
Inventor
Joachim Schmidt
Wolfgang Bamberg
Hartmut Grunert
Erhard Schorm
Cristian Weigelt
Original Assignee
Jenapharm Veb
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 Jenapharm Veb filed Critical Jenapharm Veb
Publication of RO64159A publication Critical patent/RO64159A/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/26—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
    • C07D307/30—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D307/32—Oxygen atoms
    • C07D307/33—Oxygen atoms in position 2, the oxygen atom being in its keto or unsubstituted enol form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2415—Tubular reactors
    • B01J19/2435—Loop-type reactors
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C255/00—Carboxylic acid nitriles
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/08—Preparation of carboxylic acids or their salts, halides or anhydrides from nitriles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
RO7252272A 1971-10-19 1972-10-16 Procede et installation pour la preparation du dl-alpha-hydroxy-beta,beta-dimethyle gamma-butirolactame en systeme continu RO64159A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD15840971A DD99368A1 (fr) 1971-10-19 1971-10-19

Publications (1)

Publication Number Publication Date
RO64159A true RO64159A (fr) 1978-10-15

Family

ID=5484467

Family Applications (1)

Application Number Title Priority Date Filing Date
RO7252272A RO64159A (fr) 1971-10-19 1972-10-16 Procede et installation pour la preparation du dl-alpha-hydroxy-beta,beta-dimethyle gamma-butirolactame en systeme continu

Country Status (9)

Country Link
BE (1) BE828390Q (fr)
CH (1) CH577987A5 (fr)
DD (1) DD99368A1 (fr)
DE (1) DE2228641B2 (fr)
FR (1) FR2156791A1 (fr)
HU (1) HU164765B (fr)
PL (1) PL94404B1 (fr)
RO (1) RO64159A (fr)
SU (1) SU706099A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2758883C3 (de) * 1977-12-30 1981-10-08 Basf Ag, 6700 Ludwigshafen Verfahren zur kontinuierlichen Herstellung von α-Hydroxy-β,β-dimethyl-γ-butyrolacton
DE2809179A1 (de) * 1978-03-03 1979-09-13 Basf Ag Verfahren zur extraktion von pantolacton aus seinen waessrigen loesungen
US4517132A (en) * 1983-06-29 1985-05-14 Union Carbide Corporation Process for preparation of cyanohydrins
EP1160235B1 (fr) * 2000-06-02 2006-09-20 Nippon Shokubai Co., Ltd. Procédé de préparation d'acide alpha-hydroxy carboxylique

Also Published As

Publication number Publication date
DE2228641B2 (de) 1976-09-09
HU164765B (fr) 1974-04-11
FR2156791B1 (fr) 1977-04-01
DE2228641A1 (de) 1973-04-26
SU706099A1 (ru) 1979-12-30
BE828390Q (fr) 1975-08-18
CH577987A5 (fr) 1976-07-30
DD99368A1 (fr) 1973-08-13
FR2156791A1 (en) 1973-06-01
PL94404B1 (pl) 1977-08-31

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