GB1410191A - 3-chloro-1-aryl-2-pyrazolines - Google Patents

3-chloro-1-aryl-2-pyrazolines

Info

Publication number
GB1410191A
GB1410191A GB638372A GB638372A GB1410191A GB 1410191 A GB1410191 A GB 1410191A GB 638372 A GB638372 A GB 638372A GB 638372 A GB638372 A GB 638372A GB 1410191 A GB1410191 A GB 1410191A
Authority
GB
United Kingdom
Prior art keywords
aryl
pyrazolines
chloro
unsubstituted
general formula
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
GB638372A
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing 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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Priority to GB638372A priority Critical patent/GB1410191A/en
Publication of GB1410191A publication Critical patent/GB1410191A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
    • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
    • C07D231/06—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member

Abstract

1410191 3-Chloro-1-aryl-2-pyrazolines MINNESOTA MINING & MFG CO 6 Feb 1973 [10 Feb 1972] 6383/72 Heading C2C 3-Chloro-1-aryl-2-pyrazolines of the general formula in which R<SP>1</SP> to R<SP>4</SP> are each H, unsubstituted alkyl, unsubstituted aralkyl or unsubstituted aryl and R<SP>5</SP> is unsubstituted or substituted aryl, are prepared either (a) by treating a 1-aryl- 2-pyrazolidin-3-one of general formula with anhydrous PCl 3 or (b) treating a 1-aryl-2- pyrazolidin-3-one of general formula with POCl 3 under substantially anhydrous conditions in the presence of an organic base, neutralizing and extracting the desired product with boiling methanol. Compounds produced from reaction (b) are novel.
GB638372A 1972-02-10 1972-02-10 3-chloro-1-aryl-2-pyrazolines Expired GB1410191A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB638372A GB1410191A (en) 1972-02-10 1972-02-10 3-chloro-1-aryl-2-pyrazolines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB638372A GB1410191A (en) 1972-02-10 1972-02-10 3-chloro-1-aryl-2-pyrazolines

Publications (1)

Publication Number Publication Date
GB1410191A true GB1410191A (en) 1975-10-15

Family

ID=9813510

Family Applications (1)

Application Number Title Priority Date Filing Date
GB638372A Expired GB1410191A (en) 1972-02-10 1972-02-10 3-chloro-1-aryl-2-pyrazolines

Country Status (1)

Country Link
GB (1) GB1410191A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004011453A2 (en) * 2002-07-31 2004-02-05 E.I. Du Pont De Nemours And Company Method for preparing 3-halo-4,5-dihydro-1h-pyrazoles
CN100537561C (en) * 2002-07-31 2009-09-09 纳幕尔杜邦公司 Method for preparing 3-halo-4,5-dihydro-1H-pyrazoles

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004011453A2 (en) * 2002-07-31 2004-02-05 E.I. Du Pont De Nemours And Company Method for preparing 3-halo-4,5-dihydro-1h-pyrazoles
WO2004011453A3 (en) * 2002-07-31 2004-03-18 Du Pont Method for preparing 3-halo-4,5-dihydro-1h-pyrazoles
US7335780B2 (en) 2002-07-31 2008-02-26 E.I. Du Pont De Nemours And Company Method for preparing 3-halo-4,5-dihydro-1H-pyrazoles
CN100537561C (en) * 2002-07-31 2009-09-09 纳幕尔杜邦公司 Method for preparing 3-halo-4,5-dihydro-1H-pyrazoles
EP2100889A1 (en) * 2002-07-31 2009-09-16 E. I. du Pont de Nemours and Company Method for preparing 3-halo-4, 5-dihydro-1h-pyrazoles
US7705160B2 (en) 2002-07-31 2010-04-27 E.I. Du Pont De Nemours And Company Method for preparing 3-halo-4,5-dihydro-1H-pyrazoles
AU2010257241B2 (en) * 2002-07-31 2011-11-10 Fmc Agro Singapore Pte. Ltd. Sulfonate ester intermediates

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19930204