GB601802A - Improvements in the preparation of acetylbutyrolactone - Google Patents

Improvements in the preparation of acetylbutyrolactone

Info

Publication number
GB601802A
GB601802A GB33183/45A GB3318345A GB601802A GB 601802 A GB601802 A GB 601802A GB 33183/45 A GB33183/45 A GB 33183/45A GB 3318345 A GB3318345 A GB 3318345A GB 601802 A GB601802 A GB 601802A
Authority
GB
United Kingdom
Prior art keywords
ethylene oxide
acetylbutyrolactone
ethyl acetoacetate
temperature
aqueous solution
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
GB33183/45A
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.)
US IND CHEMICALS Inc
U S Ind Chemicals Inc
Original Assignee
US IND CHEMICALS Inc
U S Ind Chemicals Inc
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 US IND CHEMICALS Inc, U S Ind Chemicals Inc filed Critical US IND CHEMICALS Inc
Publication of GB601802A publication Critical patent/GB601802A/en
Expired legal-status Critical Current

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

Abstract

Acetylbutyrolactone is prepared by reacting ethylene oxide with ethyl acetoacetate in an aqueous solution of an alkali metal hydroxide, maintaining the temperature during the reaction at not higher than 0 DEG C. In an example, ethyl alcohol is added to an aqueous solution of sodium hydroxide and after cooling to -5 DEG C., a mixture of ethylene oxide and ethyl acetoacetate previously cooled to 0 DEG C. is added, the temperature being not allowed to rise above 0 DEG C. The temperature is then maintained at 0 DEG to -5 DEG C. and after neutralizing the mixture with glacial acetic acid, the acetylbutyrolactone is obtained by extracting with benzol and fractionating the extract. The Specification as open to inspection under Sect. 91 refers to reacting the ethylene oxide with ethyl acetoacetate under alkaline conditions. This subject-matter does not appear in the Specification as accepted.
GB33183/45A 1945-02-17 1945-12-07 Improvements in the preparation of acetylbutyrolactone Expired GB601802A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US601802XA 1945-02-17 1945-02-17

Publications (1)

Publication Number Publication Date
GB601802A true GB601802A (en) 1948-05-12

Family

ID=22027874

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33183/45A Expired GB601802A (en) 1945-02-17 1945-12-07 Improvements in the preparation of acetylbutyrolactone

Country Status (1)

Country Link
GB (1) GB601802A (en)

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