GB826621A - Separation of grignard reagents from cyclic ethers - Google Patents

Separation of grignard reagents from cyclic ethers

Info

Publication number
GB826621A
GB826621A GB28688/57A GB2868857A GB826621A GB 826621 A GB826621 A GB 826621A GB 28688/57 A GB28688/57 A GB 28688/57A GB 2868857 A GB2868857 A GB 2868857A GB 826621 A GB826621 A GB 826621A
Authority
GB
United Kingdom
Prior art keywords
groups
group
tetrahydrofuran
ether
diethylene glycol
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
GB28688/57A
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.)
Primerica Inc
Original Assignee
Metal and Thermit Corp
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 Metal and Thermit Corp filed Critical Metal and Thermit Corp
Publication of GB826621A publication Critical patent/GB826621A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F3/00Compounds containing elements of Groups 2 or 12 of the Periodic Table
    • C07F3/02Magnesium compounds
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/582Recycling of unreacted starting or intermediate materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Silicon Polymers (AREA)

Abstract

Complexes of organomagnesium chlorides with cyclic ethers such as are described in Specifications 776,993, 777,158 and 779,100 are separated into their components by treatment with an ethylene polyether of formula R3O (CH2CH2O)xR4, wherein x is an integer from 1 to 8, R3 and R4 are the same or different and represent substituted or unsubstituted hydrocarbon groups, the permissible substituents being groups which do not react with the reactants or reaction products under the conditions of the separation procedure. The organo-magnesium chloride is of formula R2(MgCl)y wherein y is a small whole number and R2 is a substituted or unsubstituted alkyl, alkenyl, aryl, aralkyl, aralkenyl or heterocyclic radical, and when y is greater than 1, R2 is the corresponding polyvalent radical whose valency is equal to y. It may be complexed with tetrahydrofuran, tetrahydropyran, 2-methyltetrahydrofuran, 2 - ethoxytetrahydropyran, tetrahydrofurfuryl ethyl ether, dihydropyran and Nmethyl morpholine. The groups R3 and R4 in the cyclic ether are preferably C2-C5 aliphatic hydrocarbon radicals; phenyl groups or substituted phenyl groups having not more than 5 atoms in each substituting group (and not more than 3 substituting groups), or aralkyl groups which have no more than 4 carbon atoms in the alkyl group, the aryl being phenyl. Specified polyethers are diethylene glycol diethyl ether, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether and tetraethylene glycol dimethyl ether. In an example diethylene glycol diethyl ether is added to a solution of a complex of vinyl magnesium chloride-tetrahydrofuran in tetrahydrofuran. The tetrahydrofuran is distilled off under reduced pressure. The resulting solution may be used for the synthesis of other compounds such as, for instance, trimethyl vinyl silane (see Group IV (a)). Specifications 802,517 and 826,620 also are referred to.ALSO:Organosilanes are prepared by reacting a halosilicon compound with an organomagnesium chloride in solution in an ethylene polyether of formula R3O(CH2CH2O)xR4 wherein x is 1-8, and R3 and R4 are the same or different and represent substituted or unsubstituted hydrocarbon groups. In Example 1, vinyl magnesium chloride in diethylene glycol ether (which has displaced the tetrahydrofuran used in the preparation of the complex) is reacted with trimethylchlorosilane to give trimethylvinylsilane. Specifications 776,993, [Group IV (b)], 777,158, [Group II], 779,100, [Group IV (b)], 802,517 and 826,620 are referred to.
GB28688/57A 1956-09-18 1957-09-11 Separation of grignard reagents from cyclic ethers Expired GB826621A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US826621XA 1956-09-18 1956-09-18

Publications (1)

Publication Number Publication Date
GB826621A true GB826621A (en) 1960-01-13

Family

ID=22172590

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28688/57A Expired GB826621A (en) 1956-09-18 1957-09-11 Separation of grignard reagents from cyclic ethers

Country Status (1)

Country Link
GB (1) GB826621A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005301A1 (en) * 1978-05-10 1979-11-14 Metallgesellschaft Ag Process for the removal of sulphur oxides from high-chloride flue gases

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005301A1 (en) * 1978-05-10 1979-11-14 Metallgesellschaft Ag Process for the removal of sulphur oxides from high-chloride flue gases

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