JPS5716877A - Production of polyalkyl-2- 2,4-dihydroxyphenyl -7-hydroxy- chroman - Google Patents

Production of polyalkyl-2- 2,4-dihydroxyphenyl -7-hydroxy- chroman

Info

Publication number
JPS5716877A
JPS5716877A JP9073380A JP9073380A JPS5716877A JP S5716877 A JPS5716877 A JP S5716877A JP 9073380 A JP9073380 A JP 9073380A JP 9073380 A JP9073380 A JP 9073380A JP S5716877 A JPS5716877 A JP S5716877A
Authority
JP
Japan
Prior art keywords
formula
dihydroxyphenyl
chroman
polyalkyl
hydroxy
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
JP9073380A
Other languages
Japanese (ja)
Other versions
JPS6052152B2 (en
Inventor
Isao Hashimoto
Ikuo Tomino
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.)
Mitsui Petrochemical Industries Ltd
Original Assignee
Mitsui Petrochemical Industries 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 Mitsui Petrochemical Industries Ltd filed Critical Mitsui Petrochemical Industries Ltd
Priority to JP9073380A priority Critical patent/JPS6052152B2/en
Publication of JPS5716877A publication Critical patent/JPS5716877A/en
Publication of JPS6052152B2 publication Critical patent/JPS6052152B2/en
Expired legal-status Critical Current

Links

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  • Pyrane Compounds (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

NEW MATERIAL:Compounds of formula I (R1, R2, R4 are 1W3C alkyl; R3 is H, 1W3C alkyl).
EXAMPLE: 2,4,4-Trimethyl-2-(2,4-dihydroxyphenyl)-7-hydroxychroman.
USE: Synthetic intermediate of agricultural chemicals, medicines, additives for resins or copolymerizable monomer for modifying reins.
PREPARATION: The condensation reaction of 1mol of resorcine with 0.4W3mol of an unsaturated aliphatic ketone of formula II is conducted in the presence of an acidic catalyst such as Broensted acid or cation exchange resin at 40W130°C to produce the compound of formula I.
COPYRIGHT: (C)1982,JPO&Japio
JP9073380A 1980-07-04 1980-07-04 Process for producing polyalkyl-2-(2,4-dihydroxyphenyl)-7-hydroxychroman Expired JPS6052152B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9073380A JPS6052152B2 (en) 1980-07-04 1980-07-04 Process for producing polyalkyl-2-(2,4-dihydroxyphenyl)-7-hydroxychroman

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9073380A JPS6052152B2 (en) 1980-07-04 1980-07-04 Process for producing polyalkyl-2-(2,4-dihydroxyphenyl)-7-hydroxychroman

Publications (2)

Publication Number Publication Date
JPS5716877A true JPS5716877A (en) 1982-01-28
JPS6052152B2 JPS6052152B2 (en) 1985-11-18

Family

ID=14006761

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9073380A Expired JPS6052152B2 (en) 1980-07-04 1980-07-04 Process for producing polyalkyl-2-(2,4-dihydroxyphenyl)-7-hydroxychroman

Country Status (1)

Country Link
JP (1) JPS6052152B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0678723A (en) * 1992-09-07 1994-03-22 Towa Foods Kk Thin-wall and small piece of laminariaceae and apparatus for producing the same
EP0688770A2 (en) 1994-06-23 1995-12-27 Sumitomo Chemical Company, Limited Process for preparing hydroxyflavan compounds
US9533367B2 (en) * 2006-05-04 2017-01-03 Black & Decker Inc. Cordless welding machine and plasma cutter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0678723A (en) * 1992-09-07 1994-03-22 Towa Foods Kk Thin-wall and small piece of laminariaceae and apparatus for producing the same
EP0688770A2 (en) 1994-06-23 1995-12-27 Sumitomo Chemical Company, Limited Process for preparing hydroxyflavan compounds
US5698717A (en) * 1994-06-23 1997-12-16 Sumitomo Chemical Company, Limited Process for preparing hydroxyflavan compounds
US9533367B2 (en) * 2006-05-04 2017-01-03 Black & Decker Inc. Cordless welding machine and plasma cutter

Also Published As

Publication number Publication date
JPS6052152B2 (en) 1985-11-18

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