GB667923A - Process for preparing 3.4-dihydroxypyrrolidines - Google Patents

Process for preparing 3.4-dihydroxypyrrolidines

Info

Publication number
GB667923A
GB667923A GB12871/50A GB1287150A GB667923A GB 667923 A GB667923 A GB 667923A GB 12871/50 A GB12871/50 A GB 12871/50A GB 1287150 A GB1287150 A GB 1287150A GB 667923 A GB667923 A GB 667923A
Authority
GB
United Kingdom
Prior art keywords
pyrrolidines
dihydroxypyrrolidines
amines
compounds
over
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
GB12871/50A
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB667923A publication Critical patent/GB667923A/en
Expired legal-status Critical Current

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Abstract

3 : 4-Dihydroxypyrrolidines are obtained by heating 1 : 4-diarylamino-, or diaralkylamino-2 : 3-dihydroxybutanes to temperatures over 200 DEG C., when ring closure and elimination of amine takes place. Mixtures of amines and butane derivatives which yield the above intermediate compounds may be directly converted into pyrrolidines without isolating the power. In examples: 1 : 4-dianilino-2 : 3-di-hydroxybutane, obtainable by the action of aniline on butadiene dioxide or on the dichlorhydrin or dibromhydrin of racemic erythritol, and the corresponding 1 : 4-dianisidyl-, di-benzylamino-, dimeta- or para chloranilino-compounds are heated at over 200 DEG C. with evolution of the respective amines to give the 3 : 4 - dihydroxy - pyrrolidines, N - substituted. N-ortho-tolyl- and N-phenetyl-pyrrolidine may be obtained similarly.
GB12871/50A 1949-05-28 1950-05-23 Process for preparing 3.4-dihydroxypyrrolidines Expired GB667923A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE667923X 1949-05-28

Publications (1)

Publication Number Publication Date
GB667923A true GB667923A (en) 1952-03-12

Family

ID=6589948

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12871/50A Expired GB667923A (en) 1949-05-28 1950-05-23 Process for preparing 3.4-dihydroxypyrrolidines

Country Status (1)

Country Link
GB (1) GB667923A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312716A (en) * 1964-08-11 1967-04-04 Aldrich Chem Co Inc 4-hydroxy-3-pyrrolidinemethanols
WO1992005152A2 (en) * 1990-09-17 1992-04-02 Mcneilab, Inc. Process for producing polyhydroxylated piperidines and pyrrolidines and compounds thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312716A (en) * 1964-08-11 1967-04-04 Aldrich Chem Co Inc 4-hydroxy-3-pyrrolidinemethanols
WO1992005152A2 (en) * 1990-09-17 1992-04-02 Mcneilab, Inc. Process for producing polyhydroxylated piperidines and pyrrolidines and compounds thereof
WO1992005152A3 (en) * 1990-09-17 1992-05-14 Mcneilab Inc Process for producing polyhydroxylated piperidines and pyrrolidines and compounds thereof
US5290948A (en) * 1990-09-17 1994-03-01 Mcneilab, Inc. Process for producing polyhydroxylated piperidines and pyrrolidines and compounds thereof

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