JPS55143925A - Preparation of cyclopentenolone - Google Patents

Preparation of cyclopentenolone

Info

Publication number
JPS55143925A
JPS55143925A JP5101179A JP5101179A JPS55143925A JP S55143925 A JPS55143925 A JP S55143925A JP 5101179 A JP5101179 A JP 5101179A JP 5101179 A JP5101179 A JP 5101179A JP S55143925 A JPS55143925 A JP S55143925A
Authority
JP
Japan
Prior art keywords
formula
reacting
base
compound
aldehyde
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
JP5101179A
Other languages
Japanese (ja)
Other versions
JPS6213935B2 (en
Inventor
Aritsune Kaji
Noboru Ono
Akira Tanabe
Takashi Matsuo
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical 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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP5101179A priority Critical patent/JPS55143925A/en
Publication of JPS55143925A publication Critical patent/JPS55143925A/en
Publication of JPS6213935B2 publication Critical patent/JPS6213935B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the title compound, useful as an intermediate for the preparation of agricultural chemicals and medicines in high yield readily in a few steps, by reacting a novel aldehyde compound with a base.
CONSTITUTION: A novel aldehyde of formula I [R1 is formula II (R4 is H, alkyl group, etc.), formula III, etc.; R2 is alkyl, alkenyl, alkynyl, -(CH2)m-COOR6 (R6 is H, halogen, etc.; m is an integer 1W6), etc.; R3 is H, alkyl, alkenyl, phenyl group, etc.] is reacted with a base e.g. sodium methylate, at -50°CWthe boiling point of the solvent for 5minW2hr to give the objective compound of formula IV. The aldehyde of formula I can be obtained by reacting a nitro compound of formula V with a base, by reacting the reaction product with an acid in an alcohol of the formula R7-OH (R7 is lower alkyl group), and by reacting the resulting product with an acid in the presence of water.
COPYRIGHT: (C)1980,JPO&Japio
JP5101179A 1979-04-24 1979-04-24 Preparation of cyclopentenolone Granted JPS55143925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5101179A JPS55143925A (en) 1979-04-24 1979-04-24 Preparation of cyclopentenolone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5101179A JPS55143925A (en) 1979-04-24 1979-04-24 Preparation of cyclopentenolone

Publications (2)

Publication Number Publication Date
JPS55143925A true JPS55143925A (en) 1980-11-10
JPS6213935B2 JPS6213935B2 (en) 1987-03-30

Family

ID=12874832

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5101179A Granted JPS55143925A (en) 1979-04-24 1979-04-24 Preparation of cyclopentenolone

Country Status (1)

Country Link
JP (1) JPS55143925A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5677237A (en) * 1979-11-28 1981-06-25 T Hasegawa Co Ltd 2-substituted-hydroxycyclopentenone and its preparation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5677237A (en) * 1979-11-28 1981-06-25 T Hasegawa Co Ltd 2-substituted-hydroxycyclopentenone and its preparation
JPS6248656B2 (en) * 1979-11-28 1987-10-15 Hasegawa T Co Ltd

Also Published As

Publication number Publication date
JPS6213935B2 (en) 1987-03-30

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