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1. WO2002002486 - PROCESS FOR THE PREPARATION OF POLYHYDRIC ALCOHOLS

Publication Number WO/2002/002486
Publication Date 10.01.2002
International Application No. PCT/JP2001/005829
International Filing Date 05.07.2001
IPC
C07B 41/02 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
BGENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
41Formation or introduction of functional groups containing oxygen
02of hydroxy or O-metal groups
C07C 37/055 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
37Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
01by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis
055by substitution of a group bound to the ring by oxygen, e.g. ether group
C07D 213/69 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
213Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
02having three double bonds between ring members or between ring members and non-ring members
04having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
60with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
62Oxygen or sulfur atoms
69Two or more oxygen atoms
C07D 309/30 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
309Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
16having one double bond between ring members or between a ring member and a non-ring member
28with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
30Oxygen atoms, e.g. delta-lactones
C07J 1/00 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
JSTEROIDS
1Normal steroids containing carbon, hydrogen, halogen, or oxygen, not substituted in position 17 beta by a carbon atom, e.g. oestrane, androstane
CPC
C07B 41/02
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
BGENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
41Formation or introduction of functional groups containing oxygen
02of hydroxy or O-metal groups
C07C 2603/42
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
2603Systems containing at least three condensed rings
02Ortho- or ortho- and peri-condensed systems
40containing four condensed rings
42containing only six-membered rings
C07C 37/055
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
37Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
01by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis
055the substituted group being bound to oxygen, e.g. ether group
C07D 213/69
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
213Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
02having three double bonds between ring members or between ring members and non-ring members
04having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
60with heteroatoms or with carbon atoms having three bonds to hetero atoms, with at the most one to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
62Oxygen or sulfur atoms
69Two or more oxygen atoms
C07D 309/30
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
309Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
16having one double bond between ring members or between a ring member and a non-ring member
28with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
30Oxygen atoms, e.g. delta-lactones
C07J 1/00
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
JSTEROIDS
1Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane
Applicants
  • NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY [JP]/[JP] (AllExceptUS)
  • OTSUKA CHEMICAL CO., LTD. [JP]/[JP] (AllExceptUS)
  • KATO, Syunsaku [JP]/[JP] (UsOnly)
  • SUZUKI, Daisuke [JP]/[JP] (UsOnly)
  • SEO, Yoshiko [JP]/[JP] (UsOnly)
Inventors
  • KATO, Syunsaku
  • SUZUKI, Daisuke
  • SEO, Yoshiko
Agents
  • SAEGUSA, Eiji
Priority Data
2000-20343305.07.2000JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) PROCESS FOR THE PREPARATION OF POLYHYDRIC ALCOHOLS
(FR) PREPARATION DE POLYALCOOLS
Abstract
(EN)
A process for the preparation of polyhydric alcohols which comprises subjecting a polyhydric alcohol whose hydroxyl groups are protected to irradiation with microwave in the presence of either a basic compound or an acid exhibiting at 25°C an acid dissociation constant (pKa) of -8 to 3 to thereby conduct deblocking. According to this process, polyhydric alcohols whose hydroxyl groups are protected can be easily deblocked to thereby attain industrially advantage preparation of polyhydric alcohols.
(FR)
L'invention concerne un procédé permettant la préparation de polyalcools. Ce procédé consiste à exposer un polyalcool dont les groupes hydroxyle sont protégés à une irradiation par micro-ondes en présence soit d'un composé basique, soit d'un acide dont la constante de dissociation acide (pKa) à une température de 25 °C est comprise entre 8 et 3, afin de produire un déblocage. Ce procédé permet de débloquer aisément des polyalcools dont les groupes hydroxyle sont protégés afin de préparer des polyalcools avantageux pour les applications industrielles.
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