Process for producing tricarboxylic acid tris...

Details Process for producing tricarboxylic acid tris... Process for producing tricarboxylic acid tris...

2006-04-05

2010-06-29

Kumar, Shailendra (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C564S139000

Reexamination Certificate

active

07745661

ABSTRACT:
Disclosed are, for example, a process for producing a tricarboxylic acid tris(alkyl-substituted cyclohexylamide), the process comprising subjecting a tricarboxylic acid and an alkyl-substituted cyclohexylamine to an amidation reaction, either (a) in the presence of a boric acid compound and a phenol compound or (b) in the presence of a boric acid ester obtained by the dehydration condensation of a boric acid compound and a phenol compound, and optionally purifying the resulting crude reaction product.

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Tang, Pingwah; “Boric Acid Catalyzed Amide Formation From Carboxylic Acids and Amines: N-Benzyl-4-Phenylbutyramide”; Organic Synthesis, 2005, pp. 262-267, vol. 81, (XP-002519978).
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Ishihara, K.; “(3,4,5-Trifluorophenyl) Boronic Acid-Catalyzed Amide Formation From Carboxylic Acids and Amines: N-Benzyl-4-Phenylbutyramide”; Organic Syntheses, 2002, pp. 176-182, vol. 79, (XP-002519979).
International Search Report of PCT/JP2006/307246, date of mailing Jun. 6, 2006.

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