JPS5677237A - 2-substituted-hydroxycyclopentenone and its preparation - Google Patents

2-substituted-hydroxycyclopentenone and its preparation

Info

Publication number
JPS5677237A
JPS5677237A JP15300579A JP15300579A JPS5677237A JP S5677237 A JPS5677237 A JP S5677237A JP 15300579 A JP15300579 A JP 15300579A JP 15300579 A JP15300579 A JP 15300579A JP S5677237 A JPS5677237 A JP S5677237A
Authority
JP
Japan
Prior art keywords
bond
substituted
formula
except
expressed
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
JP15300579A
Other languages
Japanese (ja)
Other versions
JPS6248656B2 (en
Inventor
Harue Ryo
Hiroshi Tamura
Kunio Kojo
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.)
T Hasegawa Co Ltd
Hasegawa Co Ltd
Original Assignee
T Hasegawa Co Ltd
Hasegawa Co Ltd
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 T Hasegawa Co Ltd, Hasegawa Co Ltd filed Critical T Hasegawa Co Ltd
Priority to JP15300579A priority Critical patent/JPS5677237A/en
Publication of JPS5677237A publication Critical patent/JPS5677237A/en
Publication of JPS6248656B2 publication Critical patent/JPS6248656B2/ja
Granted legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Fats And Perfumes (AREA)

Abstract

NEW MATERIAL:A 2-substituted-hydroxycyclopentenone expressed by formula I [R is 1W10C alkyl, except a pentyl group, 2W10C alkenyl except 2-pentenyl, 2W 10C alkynyl except 2-pentynyl or 7W8C aralkyl; group -OH is in the 3- or 4- position and when in the 4- position, C(4)-C(5) bond is a single bond and C(2)=C(3) bond is a double bond, and when in the 3- position, C(2)-C(3) bond is a single bond and C(4)=C(5) is a double bond].
EXAMPLE: 2-Methyl-3-hydroxy-4-cyclopenten-1-one.
USE: A synthetic intermediate of a medicine, agricultural chemical or perfume, and a base for the preparation of a perfume due to its own ordor.
PROCESS: A 2-substituted-3-hydroxy-4-cyclopenten-1-one expressed by formula II is isomerized in the presence of a basic isomerizing agent, to give the compound expressed by formula I.
COPYRIGHT: (C)1981,JPO&Japio
JP15300579A 1979-11-28 1979-11-28 2-substituted-hydroxycyclopentenone and its preparation Granted JPS5677237A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15300579A JPS5677237A (en) 1979-11-28 1979-11-28 2-substituted-hydroxycyclopentenone and its preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15300579A JPS5677237A (en) 1979-11-28 1979-11-28 2-substituted-hydroxycyclopentenone and its preparation

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP9221380A Division JPS5677238A (en) 1980-07-08 1980-07-08 2-substituted-hydroxycyclopentenone and its preparation

Publications (2)

Publication Number Publication Date
JPS5677237A true JPS5677237A (en) 1981-06-25
JPS6248656B2 JPS6248656B2 (en) 1987-10-15

Family

ID=15552861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15300579A Granted JPS5677237A (en) 1979-11-28 1979-11-28 2-substituted-hydroxycyclopentenone and its preparation

Country Status (1)

Country Link
JP (1) JPS5677237A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5738741A (en) * 1980-08-20 1982-03-03 Sumitomo Chem Co Ltd Preparation of hydroxycyclopentenones
JPS6181797A (en) * 1984-09-28 1986-04-25 Sumitomo Chem Co Ltd Optically active cyclopentenone and its production

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54154735A (en) * 1978-05-24 1979-12-06 Teijin Ltd Production of 4-hydroxy-2-cycloalkenone
JPS55143925A (en) * 1979-04-24 1980-11-10 Sumitomo Chem Co Ltd Preparation of cyclopentenolone

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54154735A (en) * 1978-05-24 1979-12-06 Teijin Ltd Production of 4-hydroxy-2-cycloalkenone
JPS55143925A (en) * 1979-04-24 1980-11-10 Sumitomo Chem Co Ltd Preparation of cyclopentenolone

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5738741A (en) * 1980-08-20 1982-03-03 Sumitomo Chem Co Ltd Preparation of hydroxycyclopentenones
JPS6181797A (en) * 1984-09-28 1986-04-25 Sumitomo Chem Co Ltd Optically active cyclopentenone and its production

Also Published As

Publication number Publication date
JPS6248656B2 (en) 1987-10-15

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