FR2387973A1 - Procede de preparation de pyrones a partir d'alcools 2,5-dialkoxyfurfuryliques substitues en position 3 - Google Patents

Procede de preparation de pyrones a partir d'alcools 2,5-dialkoxyfurfuryliques substitues en position 3

Info

Publication number
FR2387973A1
FR2387973A1 FR7810404A FR7810404A FR2387973A1 FR 2387973 A1 FR2387973 A1 FR 2387973A1 FR 7810404 A FR7810404 A FR 7810404A FR 7810404 A FR7810404 A FR 7810404A FR 2387973 A1 FR2387973 A1 FR 2387973A1
Authority
FR
France
Prior art keywords
pyrones
preparing
hydroxy
dialkoxyfurfuryl
alcohols substituted
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.)
Granted
Application number
FR7810404A
Other languages
English (en)
Other versions
FR2387973B1 (fr
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 Inc
Original Assignee
Pfizer 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 Pfizer Inc filed Critical Pfizer Inc
Publication of FR2387973A1 publication Critical patent/FR2387973A1/fr
Application granted granted Critical
Publication of FR2387973B1 publication Critical patent/FR2387973B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
    • C07D309/34—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
    • C07D309/36—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with oxygen atoms directly attached to ring carbon atoms
    • C07D309/40—Oxygen atoms attached in positions 3 and 4, e.g. maltol

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyrane Compounds (AREA)
  • Saccharide Compounds (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Furan Compounds (AREA)
  • Seasonings (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

L'invention concerne un procédé de préparation de pyrones. On obtient par mise en contact des alcools 2,5-dialkoxy-furfuryliques substitués en position 3 correspondants avec un acide des beta -dihydropyrones en opérant entre - 50 et + 25 degrés C ou des gamma-pyrones en effectuant une hydrolyse complète par chauffage. Application par exemple à la production du maltol ou 2-methyl-3-hydroxy-4H-pyranne-4-one, substance rehaussant le goût et l'arôme de divers produits alimentaires, à partir de 2-(1-hydroxy-éthyl)-2,3,5-trialkoxy-furannes ou de 2-(1-hydroxy-éthyl)2,5-dialkoxy-3-halogéno-furannes.
FR7810404A 1976-11-12 1978-04-07 Procede de preparation de pyrones a partir d'alcools 2,5-dialkoxyfurfuryliques substitues en position 3 Granted FR2387973A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/741,348 US4126624A (en) 1976-11-12 1976-11-12 Preparation of gamma-pyrones from 3-substituted furans

Publications (2)

Publication Number Publication Date
FR2387973A1 true FR2387973A1 (fr) 1978-11-17
FR2387973B1 FR2387973B1 (fr) 1983-02-25

Family

ID=24980357

Family Applications (2)

Application Number Title Priority Date Filing Date
FR7733949A Granted FR2385710A1 (fr) 1976-11-12 1977-11-10 Procede de preparation de pyrones a partir d'alcools furfuryliques substitues en position 3
FR7810404A Granted FR2387973A1 (fr) 1976-11-12 1978-04-07 Procede de preparation de pyrones a partir d'alcools 2,5-dialkoxyfurfuryliques substitues en position 3

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR7733949A Granted FR2385710A1 (fr) 1976-11-12 1977-11-10 Procede de preparation de pyrones a partir d'alcools furfuryliques substitues en position 3

Country Status (25)

Country Link
US (1) US4126624A (fr)
JP (2) JPS5363381A (fr)
AR (1) AR217267A1 (fr)
AU (1) AU499476B1 (fr)
BE (1) BE860699A (fr)
BR (1) BR7707529A (fr)
CA (1) CA1109478A (fr)
DD (1) DD134349A5 (fr)
DE (1) DE2750553C2 (fr)
DK (1) DK502077A (fr)
ES (1) ES464045A1 (fr)
FI (1) FI773367A7 (fr)
FR (2) FR2385710A1 (fr)
GB (1) GB1543897A (fr)
IE (1) IE46411B1 (fr)
IT (1) IT1109435B (fr)
LU (1) LU78503A1 (fr)
MX (1) MX4750E (fr)
NL (1) NL167163C (fr)
NO (1) NO773868L (fr)
PL (1) PL202091A1 (fr)
PT (1) PT67234B (fr)
SE (1) SE7711964L (fr)
TR (1) TR19727A (fr)
ZA (1) ZA776744B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5481273A (en) * 1977-12-12 1979-06-28 Shin Etsu Chem Co Ltd Preparation of pyranone halide
JPS59192558U (ja) * 1983-06-07 1984-12-20 株式会社多川工業 粉砕機等のア−ム旋回装置
JP2586607B2 (ja) * 1987-10-30 1997-03-05 日産化学工業株式会社 光学活性アルコールの製造法
EP0741717A1 (fr) * 1994-01-31 1996-11-13 Cultor Ltd. Procede de synthese de gamma pyrones
CN107089962B (zh) * 2017-04-18 2019-09-10 山东新和成药业有限公司 一种由分子氧氧化制备麦芽酚及同系物的方法
CN111533719B (zh) * 2020-04-29 2022-04-01 广东省肇庆华格生物科技有限公司 一种乙基麦芽酚的合成工艺
CN112778257A (zh) * 2021-01-21 2021-05-11 香港科技大学 一种将糠醇氧化为二氢吡喃酮类衍生物的绿色方法
CN118005589A (zh) * 2023-12-27 2024-05-10 大连理工大学 一种由取代2,5-二氢呋喃甲醇一步制备6-甲氧基二氢吡喃酮的合成方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3491122A (en) * 1966-09-14 1970-01-20 Monsanto Co Synthesis of 4-pyrones
US3547912A (en) * 1968-07-29 1970-12-15 American Home Prod Derivatives of 2h-pyran-3(6h)-ones and preparation thereof
US3832357A (en) * 1971-05-26 1974-08-27 Daicel Ltd Process for preparation of 3-hydroxy-2-alkyl-4-pyrone

Also Published As

Publication number Publication date
DD134349A5 (de) 1979-02-21
PL202091A1 (pl) 1979-06-04
NO773868L (no) 1978-05-16
DE2750553C2 (de) 1983-06-30
IE772296L (en) 1978-05-12
SE7711964L (sv) 1978-05-13
DK502077A (da) 1978-05-13
JPS5516588B2 (fr) 1980-05-02
ES464045A1 (es) 1978-08-01
IT1109435B (it) 1985-12-16
MX4750E (es) 1982-08-31
AU499476B1 (en) 1979-04-26
AR217267A1 (es) 1980-03-14
TR19727A (tr) 1979-11-23
FR2387973B1 (fr) 1983-02-25
PT67234B (en) 1979-04-16
FR2385710B1 (fr) 1983-01-07
US4126624A (en) 1978-11-21
LU78503A1 (fr) 1979-06-13
JPS5511568A (en) 1980-01-26
BR7707529A (pt) 1978-06-20
NL167163B (nl) 1981-06-16
BE860699A (fr) 1978-05-10
GB1543897A (en) 1979-04-11
IE46411B1 (en) 1983-06-01
CA1109478A (fr) 1981-09-22
JPS5814434B2 (ja) 1983-03-18
DE2750553A1 (de) 1978-05-18
PT67234A (en) 1977-12-01
FI773367A7 (fi) 1978-05-13
JPS5363381A (en) 1978-06-06
NL167163C (nl) 1981-11-16
FR2385710A1 (fr) 1978-10-27
NL7712427A (nl) 1978-05-17
ZA776744B (en) 1978-10-25

Similar Documents

Publication Publication Date Title
BE863481A (fr) Procede de preparation d'une denree alimentaire traitee a partir de soja.
ES8303896A1 (es) Un procedimiento para la obtencion de extractos concentrados de plantas frescas o de partes de estas.
FR2397158A1 (fr) Produit proteique et procede de preparation d'un tel produit
RO63446A (fr) Procede pour la preparation des 2-alkyle-1,3 butadiene-1,4-transpolymeres ou des 2-alkyle-1,3-butadiene-1,4-tran,mcopolymeres avec 1,3-butadiene
GB1432329A (en) Process for producing potato crisp flavour concentrate
FR2385710A1 (fr) Procede de preparation de pyrones a partir d'alcools furfuryliques substitues en position 3
ZA806122B (en) Preparation of erythro- -piperid-2-yl-2,8-bis-(trifluoromethylquinolin-4-yl-methanol
GB1499439A (en) 8-hydroxyquinolines
ES8104781A1 (es) Procedimiento de hidroformilacion para preparar aldehidos
FR2350098A1 (fr) Procede de preparation de produits contenant des polyhydroxyphenyl-chromanones
BE858915A (fr) Procede de preparation de latex de caoutchoucs freffes exempts de coagulats, et nouveaux produits ainsi obtenus
ES483909A1 (es) Procedimiento para la produccion de resinas melamino-fenol- aldehidicas fundamentalmente blancas y resistentes al amari-lleo
JPS51148086A (en) Process for cultivating and processing of mashrooms
FR2327212A1 (fr) Procede de preparation du 2,3-dichloro-1,3-butadiene et produit ainsi obtenu
JPS51124845A (en) High-frequency wave heating apparatus
DE3162422D1 (en) Process for the preparation of 2,6-dichloro-4-nitroaniline and compound obtained by this process
UA7014A1 (uk) Спосіб отримання 4-аміно-5-хлор-1-фенілпірідазона-(6)
CH541625A (fr) Procédé de production par biosynthése d'un enzyme caillant le lait
JPS51138649A (en) P rocess for preparing cyclohexene
SU472118A1 (ru) Способ получени 1,2,3,4-тетрахлор -5,5-дибромциклопентадиена-1,3
JPS5579335A (en) Decolorization of dihydroxydiphenylmethane
SU455970A1 (ru) Способ получени диариловых и пирокатехиновых эфиров 1 -окси-2,2,2-трихлорэтилфосфоновой кислоты
SU498296A1 (ru) Способ получени производных 4-оксипиперидина
RO62340A (fr) Procede de preparation des isothizolepyrimidines substitues,utilises comme herbicides
JPS51112589A (en) Process for producing alcohol oxidase

Legal Events

Date Code Title Description
ST Notification of lapse