GB490571A - Improvements in or relating to the manufacture of halogen derivatives of aceto propyl alcohol - Google Patents

Improvements in or relating to the manufacture of halogen derivatives of aceto propyl alcohol

Info

Publication number
GB490571A
GB490571A GB23743/37A GB2374337A GB490571A GB 490571 A GB490571 A GB 490571A GB 23743/37 A GB23743/37 A GB 23743/37A GB 2374337 A GB2374337 A GB 2374337A GB 490571 A GB490571 A GB 490571A
Authority
GB
United Kingdom
Prior art keywords
aceto
butyrolactone
halogen
relating
manufacture
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
GB23743/37A
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.)
Research Corp
Original Assignee
Research Corp
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 Research Corp filed Critical Research Corp
Publication of GB490571A publication Critical patent/GB490571A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/04—Saturated compounds containing keto groups bound to acyclic carbon atoms
    • C07C49/17—Saturated compounds containing keto groups bound to acyclic carbon atoms containing hydroxy groups
    • C07C49/173—Saturated compounds containing keto groups bound to acyclic carbon atoms containing hydroxy groups containing halogen
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
    • C07C45/673—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by change of size of the carbon skeleton

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Halogen compounds are prepared by chlorinating or brominating a -aceto-g -butyrolactone, and if desired, hydrolysing the product with dilute acid. Chlorine, sulphuryl chloride or bromine are used for the halogenation, whilst the hydrolysis is preferably effected by the acid of the halogen previously used. The final products are halogen derivatives of acetopropyl alcohol which are useful as intermediates in the synthesis of Vitamin B1, e.g. by the process described in Specification 472,459. Examples are given. a -Aceto-g -butyrolactone is obtained by reacting ethyl acetoacetate with ethylene oxide. The Specification as open to inspection under Sect. 91 also describes the halogenation of the alkyl derivatives of a - aceto-g -butyrolactone and refers to sulphuryl bromide as a brominating agent. This subject-matter does not appear in the Specification as accepted.
GB23743/37A 1936-09-01 1937-08-31 Improvements in or relating to the manufacture of halogen derivatives of aceto propyl alcohol Expired GB490571A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US490571XA 1936-09-01 1936-09-01

Publications (1)

Publication Number Publication Date
GB490571A true GB490571A (en) 1938-08-17

Family

ID=21957836

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23743/37A Expired GB490571A (en) 1936-09-01 1937-08-31 Improvements in or relating to the manufacture of halogen derivatives of aceto propyl alcohol

Country Status (1)

Country Link
GB (1) GB490571A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111072465A (en) * 2019-12-27 2020-04-28 江苏兄弟维生素有限公司 Esterification hydrolysis process, esterification hydrolysis reactor and application

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111072465A (en) * 2019-12-27 2020-04-28 江苏兄弟维生素有限公司 Esterification hydrolysis process, esterification hydrolysis reactor and application

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