ES8406466A1 - Un procedimiento para la preparacion de 3-metil-tiofen-2-carboxaldehido - Google Patents

Un procedimiento para la preparacion de 3-metil-tiofen-2-carboxaldehido

Info

Publication number
ES8406466A1
ES8406466A1 ES522636A ES522636A ES8406466A1 ES 8406466 A1 ES8406466 A1 ES 8406466A1 ES 522636 A ES522636 A ES 522636A ES 522636 A ES522636 A ES 522636A ES 8406466 A1 ES8406466 A1 ES 8406466A1
Authority
ES
Spain
Prior art keywords
thiofen
carboxaldehyde
methyl
procedure
preparation
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
ES522636A
Other languages
English (en)
Other versions
ES522636A0 (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.)
Pfizer Corp Belgium
Pfizer Corp SRL
Original Assignee
Pfizer Corp Belgium
Pfizer Corp SRL
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 Pfizer Corp Belgium, Pfizer Corp SRL filed Critical Pfizer Corp Belgium
Publication of ES522636A0 publication Critical patent/ES522636A0/es
Publication of ES8406466A1 publication Critical patent/ES8406466A1/es
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
    • C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
    • C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
    • C07D333/06—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to the ring carbon atoms
    • C07D333/22—Radicals substituted by doubly bound hetero atoms, or by two hetero atoms other than halogen singly bound to the same carbon atom
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heterocyclic Compounds Containing Sulfur Atoms (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

PROCEDIMIENTO PARA LA PREPARACION DE 3-METIL-TIOFEN-2-CARBOXALDEHIDO.CONSISTE EN HACER REACCIONAR UN COMPUESTO DE FORMULA (I), EN LA QUE R1 Y R2 REPRESENTAN, INDEPENDIENTEMENTE, ALQUILO C1-4; YO ES HIDROGENO O ALCANOILOXI C2-4; Y X ES HIDROGENO O ALCOXI C1-4, CON UN ACIDO, EN UN MEDIO DE REACCION ACUOSO Y A UNA TEMPERATURA COMPRENDIDA ENTRE 50 Y 100 GRADOS.DE APLICACION COMO COMPUESTOS INTERMEDIOS EN LA SINTESIS DE AGENTES ANTIHELMINTICOS.
ES522636A 1982-05-24 1983-05-23 Un procedimiento para la preparacion de 3-metil-tiofen-2-carboxaldehido Expired ES8406466A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/381,596 US4471139A (en) 1982-05-24 1982-05-24 Processes for making 3-methylthiophene-2-carboxaldehyde and intermediates therefor

Publications (2)

Publication Number Publication Date
ES522636A0 ES522636A0 (es) 1984-08-01
ES8406466A1 true ES8406466A1 (es) 1984-08-01

Family

ID=23505634

Family Applications (1)

Application Number Title Priority Date Filing Date
ES522636A Expired ES8406466A1 (es) 1982-05-24 1983-05-23 Un procedimiento para la preparacion de 3-metil-tiofen-2-carboxaldehido

Country Status (9)

Country Link
US (1) US4471139A (es)
EP (1) EP0095340B1 (es)
JP (3) JPS58213750A (es)
AT (1) ATE21395T1 (es)
DE (1) DE3365276D1 (es)
DK (2) DK173998B1 (es)
ES (1) ES8406466A1 (es)
GR (1) GR79273B (es)
IE (1) IE55116B1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW237454B (es) * 1992-10-29 1995-01-01 Sumitomo Chemical Co
KR100553398B1 (ko) * 2004-03-12 2006-02-16 한미약품 주식회사 티에노[3,2-ｃ]피리딘 유도체의 제조 방법 및 이에사용되는 중간체

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2741622A (en) * 1951-12-03 1956-04-10 Monsanto Chemicals Preparation of thiophene-2-aldehydes
GB1176312A (en) * 1968-01-16 1970-01-01 Pfizer & Co C Improved process for making 3-Methyl-2-Thiophene Carbaldehyde
US3742063A (en) * 1970-12-24 1973-06-26 Eastman Kodak Co Dihydroxybutanones
JPS5832436B2 (ja) * 1976-06-23 1983-07-13 工業技術院長 通路パタ−ン認識装置における走査誤差較正方式
DE3021516A1 (de) * 1980-06-07 1981-12-24 Bayer Ag, 5090 Leverkusen 4-substituierte 3,3-dimethyl-butan-2-one, verfahren zu ihrer herstellung sowie ihre verwendung als zwischenprodukte

Also Published As

Publication number Publication date
GR79273B (es) 1984-10-22
JPH0123468B2 (es) 1989-05-02
JPS58213750A (ja) 1983-12-12
JPH0417949B2 (es) 1992-03-26
US4471139A (en) 1984-09-11
IE55116B1 (en) 1990-06-06
ATE21395T1 (de) 1986-08-15
DK149891D0 (da) 1991-08-23
EP0095340A1 (en) 1983-11-30
EP0095340B1 (en) 1986-08-13
ES522636A0 (es) 1984-08-01
JPH0149715B2 (es) 1989-10-25
JPS63233970A (ja) 1988-09-29
IE831201L (en) 1983-11-24
JPH01125377A (ja) 1989-05-17
DK149891A (da) 1991-08-23
DK226683A (da) 1983-11-25
DE3365276D1 (en) 1986-09-18
DK168626B1 (da) 1994-05-09
DK173998B1 (da) 2002-04-02
DK226683D0 (da) 1983-05-20

Similar Documents

Publication Publication Date Title
MX171822B (es) Proceso quimico
AR241187A1 (es) Procedimiento para la preparacion de nuevos productos derivados de la estructura 3-ceto delta-4,9-19-nor esteroides e intermediarios para uso exclusivo en dicho procedimiento.
ES518227A0 (es) Procedimiento para preparar nuevos compuestos de cefem.
ES2002031A6 (es) Procedimiento para preparar 4,4'-metilen-bis-(meta-cloro-2,6-dialquilanilinas)
ES8802227A1 (es) Procedimiento de obtencion de derivados de mitomicina.
ES8500727A1 (es) Procedimiento para la obtencion de derivados de feniletilamina
ES8603479A1 (es) Procedimiento para preparar nuevos imidazoles
ES8301978A1 (es) Un procedimiento para la preparacion de 2-guanidino-4-heteroaril-tiazoles.
ES8301980A1 (es) Procedimiento para la preparacion de 8-arilalcohil-3-fenil-3-nortropanoles .
DE3572013D1 (en) An acid copper electroplating solution as well as a method of electroplating
ES8107142A1 (es) Un procedimiento para la preparacion de acetofenonas substi-tuidas
ES8301965A1 (es) Procedimiento para preparar derivados de acido quinolina- carboxilico
ES8101590A1 (es) Un procedimiento para la preparacion de pirimido-2-benzace- pinas
ES8703464A1 (es) Procedimiento para preparar pirazol (3,4-b) piridinamidas.
ES8707723A1 (es) Un procedimiento para la preparacion de derivados de 1,5-benzotiazepina
ES8406466A1 (es) Un procedimiento para la preparacion de 3-metil-tiofen-2-carboxaldehido
PT82815A (en) Chemical compunds
ES8702390A1 (es) Un procedimiento para la preparacion de nuevos derivados de 1,5-benzotiazepina
IL74114A (en) Process for the preparation of alkanephosphonous acids
MX168910B (es) Procedimiento para la preparacion del acido 4,4'-dinitroestilben-2,2'-di-sulfonico y sus sales
ATE17228T1 (de) Verfahren zur oxydation von vinylbenzenverbindungen zu beta-phenylaldehyden.
ES2137151T3 (es) Procedimiento para la preparacion de acido 3-metilindazol-3-carboxilico.
AU566979B2 (en) 2-alkoxyamino sulfonyl-benzene sulfonyl urea derivatives
ES8707257A1 (es) Procedimiento para preparar derivados de aminoacidos
ES554997A0 (es) Un procedimiento para la preparacion de 4-oxido de 2-carboxipiracinas.