GB1273278A - Process for the separation of binary mixtures - Google Patents

Process for the separation of binary mixtures

Info

Publication number
GB1273278A
GB1273278A GB5470769A GB5470769A GB1273278A GB 1273278 A GB1273278 A GB 1273278A GB 5470769 A GB5470769 A GB 5470769A GB 5470769 A GB5470769 A GB 5470769A GB 1273278 A GB1273278 A GB 1273278A
Authority
GB
United Kingdom
Prior art keywords
separated
mixture
crystals
binary
melt
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
GB5470769A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB1273278A publication Critical patent/GB1273278A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
    • C07C201/06—Preparation of nitro compounds
    • C07C201/16—Separation; Purification; Stabilisation; Use of additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0004—Crystallisation cooling by heat exchange
    • B01D9/0013—Crystallisation cooling by heat exchange by indirect heat exchange
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D205/00—Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom
    • C07D205/02—Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom not condensed with other rings
    • C07D205/06—Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
    • C07D205/08—Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with one oxygen atom directly attached in position 2, e.g. beta-lactams

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

1,273,278. Separation of binary mixtures. FARBWERKE HOECHST A.G. 7 Nov., 1969 [7 Nov., 1968], No. 54707/69. Heading C2C. Components of a binary mixture (except a binary mixture forming mixed crystals and/or congruently or incongruently melting solid phases) having a minimum melting point in the range -100 to +150‹ C. and a composition falling between the extrapolated branches of the melting point curve, are separated by inoculating an homogeneous melt of the binary mixture with crystals of one of the components at a temperature which is in the range of from 0À05 to 15‹ C. below the eutectic temperature, allowing this component to selectively crystallize until the melt contains substantially less of this component than the eutectic mixture and separating the crystals from the melt. In examples (1) ortho and para chloronitrobenzene are separated from each other and (2) enantiomers of a #-lactam of formula where R 1 is alkyl C 1-5 , vinyl or phenyl, R 2 and R 3 are each hydrogen, methyl or together form an alkylene C 3-5 ring with the proviso that if R 1 =R 2 , R 3 is not hydrogen are separated from the racemic mixture.
GB5470769A 1968-11-07 1969-11-07 Process for the separation of binary mixtures Expired GB1273278A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681807495 DE1807495A1 (en) 1968-11-07 1968-11-07 Process for the separation of binary mixtures

Publications (1)

Publication Number Publication Date
GB1273278A true GB1273278A (en) 1972-05-03

Family

ID=5712617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5470769A Expired GB1273278A (en) 1968-11-07 1969-11-07 Process for the separation of binary mixtures

Country Status (5)

Country Link
BE (1) BE741422A (en)
DE (1) DE1807495A1 (en)
FR (1) FR2022807A1 (en)
GB (1) GB1273278A (en)
NL (1) NL6916439A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5814231A (en) * 1995-10-02 1998-09-29 Basf Aktiengesellschaft Separation of liquid eutectic mixtures by crystallization on cold surfaces and apparatus for this purpose
WO2000058283A1 (en) * 1999-03-31 2000-10-05 Chirotech Technology Limited Biocatalyst and its use in enzymatic resolution of racemic beta-lactams
EP2292306A1 (en) * 2009-09-02 2011-03-09 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. Method for separation of racemic compound-forming chiral substances by a cyclic crystallization process and a crystallization device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5814231A (en) * 1995-10-02 1998-09-29 Basf Aktiengesellschaft Separation of liquid eutectic mixtures by crystallization on cold surfaces and apparatus for this purpose
WO2000058283A1 (en) * 1999-03-31 2000-10-05 Chirotech Technology Limited Biocatalyst and its use in enzymatic resolution of racemic beta-lactams
EP2292306A1 (en) * 2009-09-02 2011-03-09 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. Method for separation of racemic compound-forming chiral substances by a cyclic crystallization process and a crystallization device
WO2011026830A1 (en) * 2009-09-02 2011-03-10 MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. Method for separation of racemic compound-forming chiral substances by a cyclic crystallization process and a crystallization device
JP2013503832A (en) * 2009-09-02 2013-02-04 マックス−プランク−ゲゼルシャフト・ツア・フェルデルング・デア・ヴィッセンシャフテン・エー・ファオ Method for separating racemate-forming chiral substances by circulating crystallization processes and crystallization devices
US8822721B2 (en) 2009-09-02 2014-09-02 MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. Method for separation of racemic compound-forming chiral substances by a cyclic crystallization process and a crystallization device

Also Published As

Publication number Publication date
BE741422A (en) 1970-05-08
FR2022807A1 (en) 1970-08-07
DE1807495A1 (en) 1970-06-11
NL6916439A (en) 1970-05-11

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees