SE0101989L - Enrichment for the preparation of 3-isochromanone - Google Patents

Enrichment for the preparation of 3-isochromanone

Info

Publication number
SE0101989L
SE0101989L SE0101989A SE0101989A SE0101989L SE 0101989 L SE0101989 L SE 0101989L SE 0101989 A SE0101989 A SE 0101989A SE 0101989 A SE0101989 A SE 0101989A SE 0101989 L SE0101989 L SE 0101989L
Authority
SE
Sweden
Prior art keywords
isochromanone
halogen
enrichment
preparation
formula
Prior art date
Application number
SE0101989A
Other languages
Swedish (sv)
Other versions
SE0101989D0 (en
SE526012C2 (en
Inventor
Wolfram Eichinger
Josef Kaesbauer
Alexander Klausener
Original Assignee
Bayer 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 Bayer Ag filed Critical Bayer Ag
Publication of SE0101989D0 publication Critical patent/SE0101989D0/en
Publication of SE0101989L publication Critical patent/SE0101989L/en
Publication of SE526012C2 publication Critical patent/SE526012C2/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D311/76—Benzo[c]pyrans

Landscapes

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

Abstract

The invention relates to a method for producing possibly substituted 3-isochromanone of the formula (I), according to which 2-halogen methyl phenyl acetonitriles of the formula (II) are reacted with a halogen acid. In said formulas R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> are identical or different and represent H, halogen, OH or OR<SP>5</SP>, R<SP>5</SP> representing a C<SB>1</SB>-C<SB>4</SB>-alkyl, or R<SP>1</SP> and R<SP>2</SP> or R<SP>2</SP> and R<SP>3</SP> or R<SP>3</SP> and R<SP>4</SP> together form a C<SB>3</SB>- or C<SB>4</SB>-alkyl rest or a C<SB>3</SB>- or C<SB>4</SB>-alkylene rest and X is chlorine or bromine.
SE0101989A 1998-12-18 2001-06-06 Process for the preparation of 3-isochromanone SE526012C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998158738 DE19858738C2 (en) 1998-12-18 1998-12-18 Process for the preparation of 3-isochromanone
PCT/EP1999/009544 WO2000037454A1 (en) 1998-12-18 1999-12-07 Method for producing 3-isochromanone

Publications (3)

Publication Number Publication Date
SE0101989D0 SE0101989D0 (en) 2001-06-06
SE0101989L true SE0101989L (en) 2001-06-06
SE526012C2 SE526012C2 (en) 2005-06-14

Family

ID=7891750

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0101989A SE526012C2 (en) 1998-12-18 2001-06-06 Process for the preparation of 3-isochromanone

Country Status (5)

Country Link
AU (1) AU3035800A (en)
DE (2) DE19858738C2 (en)
GB (1) GB2361475B (en)
SE (1) SE526012C2 (en)
WO (1) WO2000037454A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1116720A4 (en) * 1998-09-21 2002-09-25 Showa Denko Kk Processes for the preparation of isochromanones and intermediates for the preparation thereof
CN104387375A (en) * 2014-09-24 2015-03-04 中国药科大学 Hydrogen sulfide donor type isochromanone derivatives, preparation method and uses thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1116720A4 (en) * 1998-09-21 2002-09-25 Showa Denko Kk Processes for the preparation of isochromanones and intermediates for the preparation thereof

Also Published As

Publication number Publication date
DE19858738C2 (en) 2001-03-22
SE0101989D0 (en) 2001-06-06
GB2361475B (en) 2004-04-07
DE19982749D2 (en) 2002-01-24
GB0115218D0 (en) 2001-08-15
WO2000037454A1 (en) 2000-06-29
GB2361475A (en) 2001-10-24
DE19858738A1 (en) 2000-06-21
AU3035800A (en) 2000-07-12
SE526012C2 (en) 2005-06-14

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