ES150039A1 - PROCEDIMIENTO PARA LA OBTENCIoN DE 6-OXICROMENAS - Google Patents

PROCEDIMIENTO PARA LA OBTENCIoN DE 6-OXICROMENAS

Info

Publication number
ES150039A1
ES150039A1 ES0150039A ES150039A ES150039A1 ES 150039 A1 ES150039 A1 ES 150039A1 ES 0150039 A ES0150039 A ES 0150039A ES 150039 A ES150039 A ES 150039A ES 150039 A1 ES150039 A1 ES 150039A1
Authority
ES
Spain
Prior art keywords
alkylated
obtaining
oxychromenes
procedure
dialkyl
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
ES0150039A
Other languages
English (en)
Spanish (es)
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.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche 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
Priority claimed from CH5300639A external-priority patent/CH221217A/de
Application filed by F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Publication of ES150039A1 publication Critical patent/ES150039A1/es
Expired legal-status Critical Current

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
    • C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
    • C07D311/58—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4
    • C07D311/70—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4 with two hydrocarbon radicals attached in position 2 and elements other than carbon and hydrogen in position 6
    • C07D311/72—3,4-Dihydro derivatives having in position 2 at least one methyl radical and in position 6 one oxygen atom, e.g. tocopherols

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
ES0150039A 1939-07-28 1940-07-26 PROCEDIMIENTO PARA LA OBTENCIoN DE 6-OXICROMENAS Expired ES150039A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH5300639A CH221217A (de) 1939-07-28 1939-07-28 Verfahren zur Darstellung von 2,2,5,7,8-Pentamethyl-6-oxychroman.

Publications (1)

Publication Number Publication Date
ES150039A1 true ES150039A1 (es) 1942-06-01

Family

ID=38422733

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0150039A Expired ES150039A1 (es) 1939-07-28 1940-07-26 PROCEDIMIENTO PARA LA OBTENCIoN DE 6-OXICROMENAS

Country Status (4)

Country Link
DE (1) DE719438C (da)
DK (1) DK59225C (da)
ES (1) ES150039A1 (da)
FR (1) FR870537A (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH424801A (de) * 1963-07-04 1966-11-30 Hoffmann La Roche Verfahren zur Herstellung von Chromanverbindungen

Also Published As

Publication number Publication date
DK59225C (da) 1941-11-24
DE719438C (de) 1942-04-09
FR870537A (fr) 1942-03-13

Similar Documents

Publication Publication Date Title
FR821774A (fr) Freins électromagnétiques
FR831489A (fr) Matériel d'artillerie
FR860150A (fr) Boîte médicale de secours
FR826087A (fr) Procédé de préparation de lubrifiants
FR802205A (fr) Porte-vif
US2143682A (en) Identifiable carton board
FR816799A (fr) Matériel d'artillerie
FR830925A (fr) Porte-outil
FR823428A (fr) Ozoneur
SU48807A1 (ru) Электрический измерительный прибор
FR658515A (fr) Méthode de réduction de l'inflammabilité de l'hydrogène
FR870217A (fr) Conducteur de télécommunication à isolement par espaces d'air
FI17966A (fi) Sätt att framställa vanillin
FR822058A (fr) Dérivés d'acides sulfocarboxyliques aromatiques
FR805872A (fr) Boîte à lettres
FR808900A (fr) Blocage d'écrous de serrage
FR877505A (fr) Dérivés anthraquinoniques contenant de l'azote
CA357282A (en) Organic aliphatic acid synthesis
FR814938A (fr) Déclencheur électromagnétique extra-rapide
FR830511A (fr) Transformateur à refroidissement par air
FR805128A (fr) Marteau-pilon d'estampage à contre-frappe
ES146900A1 (es) PROCEDIMIENTO PARA LA DESCOMPOSICIoN ELECTROLiTICA DE COMPUESTOS ALCALINOS O ALACALINOTÉRREOS
FR827186A (fr) Dérivés d'acides sulfocarboxyliques organiques
FR825120A (fr) Graisseur perfectionné
FR824905A (fr) Procédé de préparation d'eau oxygénée