GB756243A - Purification of organic nitriles - Google Patents

Purification of organic nitriles

Info

Publication number
GB756243A
GB756243A GB14355/54A GB1435554A GB756243A GB 756243 A GB756243 A GB 756243A GB 14355/54 A GB14355/54 A GB 14355/54A GB 1435554 A GB1435554 A GB 1435554A GB 756243 A GB756243 A GB 756243A
Authority
GB
United Kingdom
Prior art keywords
dicyano
butene
organic solvent
isomers
mixture
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
GB14355/54A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB756243A publication Critical patent/GB756243A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C255/00—Carboxylic acid nitriles

Landscapes

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

Abstract

A liquid mixture of isomers of 1 : 4-dicyano-2-butene and 1 : 4-dicyano-1-butene melting in the range 2-8 DEG C. is prepared from crude 1 : 4-dicyano-2-butene (obtained from dichlorobutene and hydrogen cyanide, and contaminated with chlorine-containing impurities) by agitating (preferably at 0-70 DEG C.) a solution thereof in an inert organic solvent with a quantity of aqueous alkali metal hydroxide which will produce a pH of 10.5 to 12.0 in the water layer after separation of the phases, further agitating the separated dicyanobutene-solvent phase with 0.3-5 per cent by weight (based on dicyanobutene) of alkali metal hydroxide in aqueous solution for 5-30 minutes at 50-70 DEG C. until the 1 : 4-dicyano-2-butene is isomerized to a mixture melting in the range 2-8 DEG C., separating the phase comprising the mixture of isomers in the organic solvent and distilling the latter in presence of ethylene oxide or propylene oxide in a stainless steel vessel, whereby corrosion of the steel is avoided, and a distillate fraction containing the mixed isomers is obtained. The alkali hydroxide is preferably sodium hydroxide and the inert organic solvent is preferably benzene. Specifications 639,438, [Group IV (a)], and 756,242 are referred to.
GB14355/54A 1953-06-17 1954-05-17 Purification of organic nitriles Expired GB756243A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US756243XA 1953-06-17 1953-06-17

Publications (1)

Publication Number Publication Date
GB756243A true GB756243A (en) 1956-09-05

Family

ID=22126977

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14355/54A Expired GB756243A (en) 1953-06-17 1954-05-17 Purification of organic nitriles

Country Status (1)

Country Link
GB (1) GB756243A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853947A (en) * 1972-03-08 1974-12-10 Basf Ag Purifying 1,4-dicyanobutenes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853947A (en) * 1972-03-08 1974-12-10 Basf Ag Purifying 1,4-dicyanobutenes

Similar Documents

Publication Publication Date Title
Kohler et al. The preparation of cyclic ketones by ring enlargement
Goering et al. Ionic Reactions in Bicyclic Systems. I. The Preparation and Assignment of Configuration of the Isomeric Bicyclo [3.2. 1] oct-3-en-2-ols and Bicyclo [3.2. 1] octan-2-ols
Benkeser et al. Reduction of organic compounds by lithium in low molecular weight amines. II. Stereochemistry. Chemical reduction of an isolated non-terminal double bond
Whitmore et al. Formation of Cyclopropanes from Monohalides. IV. 1 Some Reactions of 1-Chloro-2-methyl-2-phenylpropane (Neophyl Chloride)
Mazur Azasteroids. III. 1 3-Aza-A-homo androgens
US2745796A (en) Method of recovering vanillin
Linstead et al. 208. Dehydrogenation. Part II. The elimination and migration of methyl groups from quaternary carbon atoms during catalytic dehydrogenation
Muller Electrochemical synthesis of 4, 4, 4-trifluoro-2-butanone
GB756243A (en) Purification of organic nitriles
Burton et al. 417. Acylation reactions catalysed by strong acids. Part II.“Acetyl perchlorate” as a C-acetylating agent
Hayward et al. Synthesis of cis-and trans-2-isoamyl-3, 4-dimethyl-2, 3-dihydrobenzofuran
Cope et al. Cyclic Polyolefins. VIII. Reactions of 6-Hydroxycyclodecanone and Cyclodecan-1, 6-diol p-Toluenesulfonates
DE1902843C3 (en) Process for the addition of chlorine to olefins
Braude et al. 196. Some observations on the course of the reaction between ethylenic compounds and N-bromosuccinimide
GB756242A (en) Purification of organic nitriles
US3418378A (en) Production of diphenylol propane
US2831900A (en) Preparation of 1, 2, 3, 4, 7, 7-hexachlorobi-cyclo(2.2.1)-2, 5-heptadiene
Mosher et al. Reduction of o-bromoanisole by lithium dineopentylamide
US2490276A (en) Preparation of triptane structure compounds
McCasland et al. Trifunctional Aminocyclanols. Synthesis of 3-Aminocyclohexanediol-1, 2
GB742496A (en) Improvements in or relating to purification of acetone by distillation
US2322281A (en) Separation of piperylene isomers
GARDNER et al. Cyclohepta [de] naphthalene (Pleiadiene)
Schenck et al. The nitrogen compounds in petroleum distillates. XXII. Isolation and synthesis of 2, 3-dimethyl-4, 8-diethylquinoline (I) and 2, 3-dimethyl-4-ethyl-8-n-propylquinoline (II)
US2349779A (en) Synthesis of aryl-alkyl-halogeno-ethanes