- Method for preparing 3-amino-4,4,4-trifluorocrotonate
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The invention discloses a method for preparing 3-amino-4,4,4-trifluorocrotonate with high raw material utilization rate. According to the invention, 4,4,4-trifluoroacetyl ethyl acetate and excessive ammonium acetate are subjected to an amination reaction to obtain a reaction solution, then the reaction solution is separated to an organic phase and an aqueous phase, ammoniacal liquor is added in the aqueous phase to obtain ammonium acetate, and finally ammonium acetate is cycled to continuous reaction.
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Paragraph 0012; 0021; 0023
(2017/01/31)
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- BENZO[C][2,7]NAPHTHYRIDINE DERIVATIVES, AND THEIR USE AS KINASE INHIBITORS
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The present invention relates to Benzo[c] [2,7] naph thy ri dine Derivatives of formula (I), compositions comprising an effective amount of a Benzo[c] [2,7]naphthyridine Derivative, methods for treating or preventing a proliferative disorder or an autoimmune disease, comprising administering to a subject in need thereof an effective amount of a Benzo[c] [2,7]naphthyridine Derivative, methods for modulating PDK-I activity, PKA activity, Akt activity, S6K activity, or PKC activity, comprising administering to a subject in need thereof an effective amount of a Benzo[c] [2,7] naphthyridine Derivative. The invention also relates to processes for preparing a Benzo[c] [2,7] naphthyridine Derivative.
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Page/Page column 231
(2008/12/08)
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- METHOD FOR PRODUCING ORGANIC ACID
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A novel method is provided whereby a free organic acid can be produced particularly from an ammonium salt of an organic acid having a high melting point obtainable by bioconversion of a carbon source in the presence of a neutralizing agent, efficiently at a low cost, and the used material for reaction and a byproduct can be recycled for reuse without being disposed. An ammonium salt of organic acid A such as a dicarboxylic acid, a tricarboxylic acid or an amino acid is subjected to reactive crystallization by means of acid B such as a monocarboxylic acid satisfying the following formula (1), to separate free organic acid A in solid form:pKa(A) ≦ pKa(B) where pKa(A) and pKa(B) represent ionization indices of organic acid A and acid B, respectively, provided that when they have plural values, they represent the minimum pKa among them. The crystallization mother liquor after precipitating and separating organic acid A is, after separating acid B and then an ammonium salt of acid B, recycled for use in the reactive crystallization step. The ammonium salt of acid B is decomposed into acid B and ammonia, which are recycled for use in the reactive crystallization step and as a neutralizing agent in the bioconversion step, respectively.
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Page/Page column 23
(2008/06/13)
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- PROCESS FOR PREPARING AMINO ACIDS USING THE AMIDOCARBONYLATION REACTION (1)
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The present invention relates to a sequence for the preparation of amino acids, for example alpha amino acids, in particular methionine, by making use of an amidocarbonylation reaction and reuse of the catalyst.
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Page/Page column 12-13
(2008/06/13)
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- PROCESS FOR PRODUCING LACTIDE AND PROCESS FOR PRODUCING POLYLACTIC ACID STARTING WITH FERMENTED LACTIC ACID
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According to the present invention, a process for consistently producing lactide from ammonium lactate obtained by lactic fermentation, and a process for consistently producing polylactic acid from ammonium lactate obtained by lactic fermentation, are provided. A process for producing lactide, which comprises the steps of: (1) synthesizing lactate ester from ammonium lactate obtained by lactic fermentation; (2) polycondensing the lactate ester in the presence of a catalyst other than monobutyltin, whereby polylactic acid with a weight-average molecular weight of less than 15,000 (lactic acid prepolymer) is synthesized; and (3) depolymerizing the polylactic, whereby lactide is produced. A process for producing polylactic acid, which comprises the additional step of (4) ring-opening polymerizing said lactide, whereby polylactic acid is obtained. A process for producing lactate ester from ammonium lactate obtained by lactic fermentation.
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Page/Page column 9-10
(2010/01/31)
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