GB1044047A - Process for halogenating acetone - Google Patents

Process for halogenating acetone

Info

Publication number
GB1044047A
GB1044047A GB2914463A GB2914463A GB1044047A GB 1044047 A GB1044047 A GB 1044047A GB 2914463 A GB2914463 A GB 2914463A GB 2914463 A GB2914463 A GB 2914463A GB 1044047 A GB1044047 A GB 1044047A
Authority
GB
United Kingdom
Prior art keywords
acetone
hydrogen halide
vapour
mixture
phase
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
GB2914463A
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.)
Merck and Co Inc
Original Assignee
Merck and Co 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 Merck and Co Inc filed Critical Merck and Co Inc
Publication of GB1044047A publication Critical patent/GB1044047A/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
    • C07C49/16—Saturated compounds containing keto groups bound to acyclic carbon atoms 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
    • C07C45/63—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 introduction of halogen; by substitution of halogen atoms by other halogen atoms
    • 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
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
    • C07C45/82—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
    • C07C45/83—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation by extractive distillation

Abstract

Acetone is monohalogenated with chlorine or bromine in the vapour phase by a process which comprises (a) reacting acetone vapour and halogen vapour in a molar ratio in excess of 3:1, preferably from 4 to 7:1, (b) distilling the mixture to separate hydrogen halide gas and unreacted acetone from the monohaloacetone, (c) contacting the mixture of hydrogen halide gas and unreacted acetone vapour with sufficient H2O to remove essentially all hydrogen halide as aqueous hydrogen halide solution, under conditions such that the acetone remains in the vapour state, (d) drying the acetone to a level less than 2% by wt. of H2O and (e) recycling the acetone to the vapour phase mixture of acetone and halogen. The process may be effected by passage of the reactants from phase (a) into a fractionating column, from which the issuing acetone hydrogen halide are passed into a second column for stage (c) water scrubbing. It is preferred that the amount of water employed be at least the amount required to produce the aqueous hydrogen halide azeotrope. The examples give details of the chlorination of acetone.
GB2914463A 1962-07-24 1963-07-23 Process for halogenating acetone Expired GB1044047A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21212962A 1962-07-24 1962-07-24

Publications (1)

Publication Number Publication Date
GB1044047A true GB1044047A (en) 1966-09-28

Family

ID=22789672

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2914463A Expired GB1044047A (en) 1962-07-24 1963-07-23 Process for halogenating acetone

Country Status (2)

Country Link
CH (1) CH451104A (en)
GB (1) GB1044047A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2442821A1 (en) * 1978-11-29 1980-06-27 Ici Ltd Aliphatic ether or ketone cpds. selective partial halogenation - under reflux conditions in the distn. head of a distn. system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2442821A1 (en) * 1978-11-29 1980-06-27 Ici Ltd Aliphatic ether or ketone cpds. selective partial halogenation - under reflux conditions in the distn. head of a distn. system

Also Published As

Publication number Publication date
CH451104A (en) 1968-05-15

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