JPS6445342A - Production of 1,4-dihydroxy-2-naphthoic acid aryl ester - Google Patents

Production of 1,4-dihydroxy-2-naphthoic acid aryl ester

Info

Publication number
JPS6445342A
JPS6445342A JP20175887A JP20175887A JPS6445342A JP S6445342 A JPS6445342 A JP S6445342A JP 20175887 A JP20175887 A JP 20175887A JP 20175887 A JP20175887 A JP 20175887A JP S6445342 A JPS6445342 A JP S6445342A
Authority
JP
Japan
Prior art keywords
dihydroxy
naphthoic acid
formula
production
aryl ester
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
JP20175887A
Other languages
Japanese (ja)
Other versions
JPH0555495B2 (en
Inventor
Takezo Sonoda
Fumioki Shimoyama
Manabu Nishida
Osamu Yoshida
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.)
Nippon Shokubai Co Ltd
Original Assignee
Nippon Shokubai 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 Nippon Shokubai Co Ltd filed Critical Nippon Shokubai Co Ltd
Priority to JP20175887A priority Critical patent/JPS6445342A/en
Publication of JPS6445342A publication Critical patent/JPS6445342A/en
Publication of JPH0555495B2 publication Critical patent/JPH0555495B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE:To obtain the titled compound in high efficiency, by reacting 1,4- dihydroxy-2-naphthoic acid with triaryl phosphite, hydrolyzing by-produced dimer with an alkaline aqueous solution and reusing the hydrolyzed product as a raw material. CONSTITUTION:The objective compound of formula I (R is H, halogen or 1-10C alkyl) can be produced by reacting 1mol. of 1,4-dihydroxy-2-naphthoic acid with >=0.8mol., preferably 0.9-3.0mol. of a triaryl phosphite as a reactant at 90-150 deg.C. The dimer of formula II formed as a by-product is hydrolyzed with an alkaline substance (e.g. NaOH) in an inert gas stream (e.g. nitrogen) at 20-80 deg.C, the hydrolyzed product is neutralized with water and the precipitated 1,4-dihydroxy-2-naphthoic acid is reused as a raw material. The compound of formula I is useful as a dye, intermediate for pigment and a photosensitive material.
JP20175887A 1987-08-14 1987-08-14 Production of 1,4-dihydroxy-2-naphthoic acid aryl ester Granted JPS6445342A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20175887A JPS6445342A (en) 1987-08-14 1987-08-14 Production of 1,4-dihydroxy-2-naphthoic acid aryl ester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20175887A JPS6445342A (en) 1987-08-14 1987-08-14 Production of 1,4-dihydroxy-2-naphthoic acid aryl ester

Publications (2)

Publication Number Publication Date
JPS6445342A true JPS6445342A (en) 1989-02-17
JPH0555495B2 JPH0555495B2 (en) 1993-08-17

Family

ID=16446451

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20175887A Granted JPS6445342A (en) 1987-08-14 1987-08-14 Production of 1,4-dihydroxy-2-naphthoic acid aryl ester

Country Status (1)

Country Link
JP (1) JPS6445342A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8699564B2 (en) 2003-01-28 2014-04-15 Thomson Licensing Robust mode staggercasting with adjustable delay offset

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8699564B2 (en) 2003-01-28 2014-04-15 Thomson Licensing Robust mode staggercasting with adjustable delay offset

Also Published As

Publication number Publication date
JPH0555495B2 (en) 1993-08-17

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