GB688553A - Manufacture of glycols - Google Patents

Manufacture of glycols

Info

Publication number
GB688553A
GB688553A GB1278550A GB1278550A GB688553A GB 688553 A GB688553 A GB 688553A GB 1278550 A GB1278550 A GB 1278550A GB 1278550 A GB1278550 A GB 1278550A GB 688553 A GB688553 A GB 688553A
Authority
GB
United Kingdom
Prior art keywords
dimethylpentane
diol
methacrolein
hydrogenated
naoh
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
GB1278550A
Inventor
Reginald Harold Hall
Richard Norman Lacey
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.)
Distillers Co Yeast Ltd
Distillers Co Ltd
Original Assignee
Distillers Co Yeast Ltd
Distillers Co Ltd
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 Distillers Co Yeast Ltd, Distillers Co Ltd filed Critical Distillers Co Yeast Ltd
Priority to GB1278550A priority Critical patent/GB688553A/en
Publication of GB688553A publication Critical patent/GB688553A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C43/00—Ethers; Compounds having groups, groups or groups
    • C07C43/02—Ethers
    • C07C43/03—Ethers having all ether-oxygen atoms bound to acyclic carbon atoms
    • C07C43/04—Saturated ethers
    • C07C43/13—Saturated ethers containing hydroxy or O-metal groups

Landscapes

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

Abstract

The invention comprises a new compound, 2 - n - butoxymethyl - 2 : 4 - dimethylpentane-1 : 5 diol, and a process for the manufacture of diols of the general formula <FORM:0688553/IV (b)/1> in which R1 is methyl or ethyl and R2 is a straight chain alkyl radical of not more than 4 carbon atoms, by treating a substituted acrolein of formula CH2 = C(R1)-CHO with dilute aqueous alkali and an alcohol R2OH at temperatures not exceeding 50 DEG C. and subjecting the product, preferably after isolation from the reaction mixture, to catalytic hydrogenation. Cooling is necessary to maintain the temperature in the desired range for the condensation process as the reaction is exothermic. The hydrogenation is preferably carried out at a temperature in the range 50-200 DEG C. and at a pressure above 50 atm. in the presence of Raney nickel paste. In the examples (a) a -methacrolein is condensed with methanol in the presence of NaOH and the resulting product is separated and hydrogenated to give 2-methoxymethyl-2,4-dimethylpentane-1.5 diol; (b) a -methacrolein is condensed with ethanol in the presence of NaOH and the resulting compound, after separation, is hydrogenated to give 2-ethoxymethyl-2 : 4-dimethylpentane-1 : 5-diol; (c) a -methacrolein is condensed with n-butanol in the presence of NaOH and the product, after separation, is hydrogenated to give a new compound 2-n-butoxymethyl-2 : 4-dimethylpentane-1 : 5-diol.
GB1278550A 1950-05-22 1950-05-22 Manufacture of glycols Expired GB688553A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1278550A GB688553A (en) 1950-05-22 1950-05-22 Manufacture of glycols

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1278550A GB688553A (en) 1950-05-22 1950-05-22 Manufacture of glycols

Publications (1)

Publication Number Publication Date
GB688553A true GB688553A (en) 1953-03-11

Family

ID=10011077

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1278550A Expired GB688553A (en) 1950-05-22 1950-05-22 Manufacture of glycols

Country Status (1)

Country Link
GB (1) GB688553A (en)

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