CA1055952A - Process for production of isochromans - Google Patents

Process for production of isochromans

Info

Publication number
CA1055952A
CA1055952A CA232,861A CA232861A CA1055952A CA 1055952 A CA1055952 A CA 1055952A CA 232861 A CA232861 A CA 232861A CA 1055952 A CA1055952 A CA 1055952A
Authority
CA
Canada
Prior art keywords
reaction
group
lower alkyl
hydrogen
cyclopentano
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
CA232,861A
Other languages
English (en)
French (fr)
Inventor
James M. Sanders
Loren H. Michael
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.)
International Flavors and Fragrances Inc
Original Assignee
International Flavors and Fragrances Inc
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
Priority claimed from US05/590,471 external-priority patent/US3978090A/en
Application filed by International Flavors and Fragrances Inc filed Critical International Flavors and Fragrances Inc
Application granted granted Critical
Publication of CA1055952A publication Critical patent/CA1055952A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D311/00Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02Heterocyclic 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
    • C07D311/78Ring systems having three or more relevant rings
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D311/00Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02Heterocyclic 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
    • C07D311/76Benzo[c]pyrans

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pyrane Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
CA232,861A 1975-06-26 1975-08-05 Process for production of isochromans Expired CA1055952A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/590,471 US3978090A (en) 1974-05-01 1975-06-26 Process for production of isochromans

Publications (1)

Publication Number Publication Date
CA1055952A true CA1055952A (en) 1979-06-05

Family

ID=24362401

Family Applications (1)

Application Number Title Priority Date Filing Date
CA232,861A Expired CA1055952A (en) 1975-06-26 1975-08-05 Process for production of isochromans

Country Status (8)

Country Link
JP (1) JPS523066A (OSRAM)
AU (1) AU473659B2 (OSRAM)
CA (1) CA1055952A (OSRAM)
CH (1) CH622012A5 (OSRAM)
DE (1) DE2539773C2 (OSRAM)
FR (1) FR2315504A2 (OSRAM)
GB (1) GB1524076A (OSRAM)
NL (1) NL177115C (OSRAM)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3910964A (en) * 1974-05-01 1975-10-07 Int Flavors & Fragrances Inc Process for production of isochromans

Also Published As

Publication number Publication date
JPS562067B2 (OSRAM) 1981-01-17
CH622012A5 (en) 1981-03-13
NL177115C (nl) 1985-08-01
DE2539773C2 (de) 1984-07-05
DE2539773A1 (de) 1977-01-13
NL177115B (nl) 1985-03-01
FR2315504B2 (OSRAM) 1980-04-25
NL7509877A (nl) 1976-12-28
JPS523066A (en) 1977-01-11
FR2315504A2 (fr) 1977-01-21
AU473659B2 (en) 1976-07-01
AU8373175A (en) 1976-07-01
GB1524076A (en) 1978-09-06

Similar Documents

Publication Publication Date Title
EP0004914B1 (en) Process for the production of compounds useful in perfumery
US3978090A (en) Process for production of isochromans
KR20080112340A (ko) 커큐민의 합성
US3859309A (en) Production of unsaturated carbocyclic ketones
US3910964A (en) Process for production of isochromans
EP0707561A1 (en) Process for the preparation of 2-hydroxyarylaldehydes
CA1055952A (en) Process for production of isochromans
US3944600A (en) Indenylidene-3-acetic acid process for preparing indene acetic acids
EP0006355B1 (en) Mixed anhydride steroid intermediate and process for preparing steroid intermediates
JPS6254094B2 (OSRAM)
US5637750A (en) Method for the preparation of 2 hydroxybenzonitrile
US3906047A (en) 8-(2,6,6-Trimethyl-4-oxo-2-cyclohexen-1-ylidene-2-methylene-6-methyl-4,6-octadien-3-ol
US3318916A (en) Process for the preparation of substituted tetrahydrofurans
WO2002014301A1 (en) Intermediates for use in the preparation of vitamin e
AU2001287702A1 (en) Intermediates for use in the preparation of vitamin E
US3682970A (en) Production of unsaturated carbocyclic ketones
CA1312338C (en) Process for the preparation of vinyl ethers
US5136112A (en) Process for preparing 2-hydroxy-2 5, 5, 9-tetramethyldecalyl ethanol
US2884464A (en) Process for the production of allyl substituted acetylene compounds
US4060563A (en) Process for preparing 2-allyl phenol
JP2736916B2 (ja) シベトンの製造法
US4308407A (en) Chemical process
US4350833A (en) Terephthaldialdehyde monoacetal and method for manufacture thereof
US4091033A (en) Method of making 2-alkoxy-2,3-dihydro-benzofuran-5-ols and their alkyl sulfonic acid esters
GB1601300A (en) Process for preparing 2-cyclopentenone derivative and perfume composition containing the derivative