GB883812A - Improvements in preparation of polyhydric alcohols - Google Patents

Improvements in preparation of polyhydric alcohols

Info

Publication number
GB883812A
GB883812A GB16098/60A GB1609860A GB883812A GB 883812 A GB883812 A GB 883812A GB 16098/60 A GB16098/60 A GB 16098/60A GB 1609860 A GB1609860 A GB 1609860A GB 883812 A GB883812 A GB 883812A
Authority
GB
United Kingdom
Prior art keywords
mannitol
sorbitol
carbon atoms
polyhydric alcohols
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
GB16098/60A
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.)
Atlas Powder Co
Original Assignee
Atlas Powder Co
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 Atlas Powder Co filed Critical Atlas Powder Co
Publication of GB883812A publication Critical patent/GB883812A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/56—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by isomerisation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
    • C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
    • C07C29/14—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of a —CHO group
    • C07C29/141—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of a —CHO group with hydrogen or hydrogen-containing gases
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/60—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by elimination of -OH groups, e.g. by dehydration
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
    • C07C31/18—Polyhydroxylic acyclic alcohols
    • C07C31/26—Hexahydroxylic alcohols
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B2200/00—Indexing scheme relating to specific properties of organic compounds
    • C07B2200/07—Optical isomers

Landscapes

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

Abstract

Acyclic polyhydric alcohols containing 4-6 carbon atoms and one hydroxyl directly attached to each carbon atom are isomerised to similar alcohols by heating a solution of the starting alcohol in the presence of a hydrogenation catalyst at 160 DEG C.-200 DEG C. under a hydrogen pressure of 500-3,000 lbs./sq. in., for at least half an hour while maintaining the pH of the solution at 7-11, discontinuing the heating before any substantial absorption of hydrogen takes place, cooling the reaction mixture and separating the resulting solution of isomerised polyhydric alcohols from the hydrogenation catalyst. The starting alcohols may be dissolved in water, an alcohol of 1-4 carbon atoms or a glycol of 2-4 carbon atoms. Suitable hydrogenation catalysts are, for example, nickel or cobalt deposited on an inert carrier, or copper chromite. Examples are given of the isomerisation of (a) sorbitol to mannitol and iditol (b) mannitol to sorbitol and iditol; (c) dulcitol to sorbitol, mannitol, tallitol and allitol, and (d) erythritol to threitol.
GB16098/60A 1959-05-13 1960-05-06 Improvements in preparation of polyhydric alcohols Expired GB883812A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US883812XA 1959-05-13 1959-05-13

Publications (1)

Publication Number Publication Date
GB883812A true GB883812A (en) 1961-12-06

Family

ID=22211045

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16098/60A Expired GB883812A (en) 1959-05-13 1960-05-06 Improvements in preparation of polyhydric alcohols

Country Status (1)

Country Link
GB (1) GB883812A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292451A (en) 1978-03-30 1981-09-29 Ici Americas Inc. High mannitol process (alkaline hydrogenation in presence of alkali metal carbonate)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292451A (en) 1978-03-30 1981-09-29 Ici Americas Inc. High mannitol process (alkaline hydrogenation in presence of alkali metal carbonate)

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