DE2961635D1 - Process for preparing 5-(2-bromoethylidene)-2(3h)-4a-methyl-4,4a,5,6,7,8-hexahydronaphthalene-2-one and 5-ethenyl-2(3h)-4a-methyl-4,4a,7,8-tetrahydronaphthalene-2-one therefrom by dehydrobromination - Google Patents

Process for preparing 5-(2-bromoethylidene)-2(3h)-4a-methyl-4,4a,5,6,7,8-hexahydronaphthalene-2-one and 5-ethenyl-2(3h)-4a-methyl-4,4a,7,8-tetrahydronaphthalene-2-one therefrom by dehydrobromination

Info

Publication number
DE2961635D1
DE2961635D1 DE7979100460T DE2961635T DE2961635D1 DE 2961635 D1 DE2961635 D1 DE 2961635D1 DE 7979100460 T DE7979100460 T DE 7979100460T DE 2961635 T DE2961635 T DE 2961635T DE 2961635 D1 DE2961635 D1 DE 2961635D1
Authority
DE
Germany
Prior art keywords
methyl
bromoethylidene
dehydrobromination
hexahydronaphthalene
tetrahydronaphthalene
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
DE7979100460T
Other languages
English (en)
Inventor
Malcolm Rice Bell
John Lawrence Herrmann
Vahan Akullian
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.)
STWB Inc
Original Assignee
Sterling Drug 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
Application filed by Sterling Drug Inc filed Critical Sterling Drug Inc
Application granted granted Critical
Publication of DE2961635D1 publication Critical patent/DE2961635D1/de
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/587—Unsaturated compounds containing a keto groups being part of a ring
    • C07C49/647—Unsaturated compounds containing a keto groups being part of a ring having unsaturation outside the ring
    • C07C49/653—Unsaturated compounds containing a keto groups being part of a ring having unsaturation outside the ring polycyclic
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/65—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by splitting-off hydrogen atoms or functional groups; by hydrogenolysis of functional groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/65—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by splitting-off hydrogen atoms or functional groups; by hydrogenolysis of functional groups
    • C07C45/66—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by splitting-off hydrogen atoms or functional groups; by hydrogenolysis of functional groups by dehydration

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
DE7979100460T 1978-03-13 1979-02-16 Process for preparing 5-(2-bromoethylidene)-2(3h)-4a-methyl-4,4a,5,6,7,8-hexahydronaphthalene-2-one and 5-ethenyl-2(3h)-4a-methyl-4,4a,7,8-tetrahydronaphthalene-2-one therefrom by dehydrobromination Expired DE2961635D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/885,776 US4157349A (en) 1978-03-13 1978-03-13 Dehydrohalogenation process

Publications (1)

Publication Number Publication Date
DE2961635D1 true DE2961635D1 (en) 1982-02-18

Family

ID=25387672

Family Applications (1)

Application Number Title Priority Date Filing Date
DE7979100460T Expired DE2961635D1 (en) 1978-03-13 1979-02-16 Process for preparing 5-(2-bromoethylidene)-2(3h)-4a-methyl-4,4a,5,6,7,8-hexahydronaphthalene-2-one and 5-ethenyl-2(3h)-4a-methyl-4,4a,7,8-tetrahydronaphthalene-2-one therefrom by dehydrobromination

Country Status (7)

Country Link
US (1) US4157349A (de)
EP (1) EP0005145B1 (de)
JP (1) JPS54128559A (de)
CA (1) CA1099743A (de)
DE (1) DE2961635D1 (de)
DK (1) DK94579A (de)
IE (1) IE48256B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4680142A (en) * 1982-03-02 1987-07-14 International Flavors & Fragrances Inc. Process for preparing 4,4A,5,6-tetrahydro-7-methyl-2-(3H)-naphthalenone, intermediates used in said process and novel crystalline form of same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086027A (en) * 1960-01-22 1963-04-16 Lilly Co Eli 19-nor-4, 9(10)-steroids and process
US3920748A (en) * 1972-06-12 1975-11-18 Hoffmann La Roche Steroid total synthesis and intermediates
US3920749A (en) * 1973-08-17 1975-11-18 Hoffmann La Roche Process for dehydrating vinyl-substituted tertiary alcohols

Also Published As

Publication number Publication date
CA1099743A (en) 1981-04-21
EP0005145B1 (de) 1981-12-30
US4157349A (en) 1979-06-05
JPS54128559A (en) 1979-10-05
EP0005145A1 (de) 1979-11-14
IE790265L (en) 1979-09-13
DK94579A (da) 1979-09-14
IE48256B1 (en) 1984-11-14

Similar Documents

Publication Publication Date Title
YU41437B (en) Process for producing new amino-sugar derivatives
GB2017687B (en) Process for preparing 2,2,6,6,-tetramethyl-4-piperidone
YU306379A (en) Process for producing 3-aromatically substituted 4(3h)-quinazolines
HU175890B (en) Process for producing new 1,2,3,4,6,7-hexahydro-11-b-alpha-benzo-square bracket-a-square brecket closed-quinolyzine derivatives
PT70486A (en) Process for preparing 1,2,4,5-tetra-alkyl-4-arylpiperidines
PT70340A (en) Process for preparing 3,4-dihydro-3-oxo-2-quinoxalines
YU78679A (en) Process for obtaining 1,3-dibenzoyloxy-17 alpha-ethinyl-7 alpha-methyl-1,3,5(10)-estratriene-17 beta-ol
GB2019371B (en) Process for producing titanium carbonitride
SU913942A3 (en) Process for producing 2,4-diamino-6-pyperidinopyrimidine-3-oxy (its modifications)
HU174059B (hu) Sposob poluchenija 2,3-dimetil-pentanala
YU219982A (en) Process for producing 2,3-dicyanopyrazine
DE2961635D1 (en) Process for preparing 5-(2-bromoethylidene)-2(3h)-4a-methyl-4,4a,5,6,7,8-hexahydronaphthalene-2-one and 5-ethenyl-2(3h)-4a-methyl-4,4a,7,8-tetrahydronaphthalene-2-one therefrom by dehydrobromination
YU55679A (en) Process for obtaining 1,2-dioximes
GB2015517B (en) Process for producing 3,5-dichloro- - methylstyrene
SU1178325A3 (ru) "cпocoб пoлучehия пpoизboдhыx 2,2-диaлkил-18,19-диhopпpeгh-4-eh-3,20-диoha"
YU41184B (en) Process for obtaining 2-amino-or 2-thio-substituted derivatives of 4,5 dipheryl - oxazole
GB2034714B (en) Process for preparing cyclo-1,3,2-oxazaphosphoryl derivatives
HU185927B (en) Process for the production of 2,3-dihydro-2,2-dimethyl-7-hydroxy-benzofurane
YU202779A (en) Process for obtaining 1,2,3-thiadiazole-5-yl-carbamide
YU216479A (en) Process for obtaining 5,6,2-methyl-n-phenyl-1,4-oxathiine-3-carboxamide
HU175923B (en) Process for preparing 1,6-di-o-methanesulphonyl-3,4-di-o-methyl-d-mannitol
GB2026489B (en) Process for obtaining 1,5-dinitro-anthraquinone
DE2961625D1 (en) Stereospecific process for the preparation of 2-oxiranyl-1,4-benzodioxanes
HU178402B (en) New process for producing okrahydro-indolo-square bracket-2,3-a-square bracket closed-quinolysines
HU179687B (en) Process for producing 5,6,7,8-- etrahydro-4-bracket-3h-bracket closed-quinasolinones

Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee