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WO/2008/073411A2 |
A high yield and high productivity processes for preparing 3-hydroxyglutaronitrile by reacting an epihalohydrin or a 4-halo-3-hydroxy-butanenitrile, or analogous compound containing a different leaving group, with cyanide (CN-) in the pr...
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WO/2008/071465A1 |
The invention generally relates to a method for producing acetone cyanhydrin, comprising the following steps: A.) contacting acetone and hydrocyanic acid in a reactor to give a reaction mixture, said reaction mixture being circulated and...
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WO/2008/071463A1 |
The invention generally relates to a method for producing acetone cyanhydrin, comprising the following steps: A.) contacting acetone and hydrocyanic acid in a reactor to give a reaction mixture, said reaction mixture being circulated and...
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WO/2008/068065A1 |
The invention relates to a process for preparing acetone cyanohydrin, in which a reaction mixture comprising acetone and hydrocyanic acid is reacted in the presence of a catalyst in a loop reactor to form acetone cyanohydrin as the react...
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WO/2008/070158A1 |
Disclosed is a method for preparing a compound of Formula (1) comprising contacting a compound of Formula (2) with at least one compound of Formula 3 in the presence of a solvent comprising one or more organic solvents selected from ethe...
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WO/2008/068064A1 |
The subject-matter of the present invention relates in principle to a process for preparing alkyl esters of methacrylic acid, comprising at least the following steps: preparing acetone cyanohydrin from hydrocyanic acid and acetone in a f...
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WO/2008/062432A2 |
The present invention relates to an improved process for the preparation of Entacapone of formula (I): comprising a step of, condensation of 3, 4-dihydroxy-5- nitrobenzaldehyde of formula (II): with N, N-diethylcyanoacetamide of formula ...
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WO/2008/053113A1 |
The invention relates to a method for preparing high-purity primary di- and tri-amines from nitriles that can originate from dimmer and trimer acids. The method comprises the step of ammoniating the acid functions and the step of hydroge...
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WO/2008/053304A2 |
The invention relates to processes for the preparation of a stable polymorphic form of entacapone. More particularly, it relates to the preparation of stable polymorphic form designated as Form D. The invention also relates to an improve...
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WO/2008/050313A1 |
This invention relates to novel iminium salts, which may be in the form of ionic liquids, and a process for producing electron deficient olefins, such as 2-cyanoacrylates, using such an iminium salt, for instance in the form of an ionic ...
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WO/2008/050767A1 |
The invention provides a fluidized-bed catalyst for the production of acrylonitrile which can attain high yield of acrylonitrile over a long time; and a process for the production of acrylonitrile with the catalyst. The invention relates...
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WO/2008/038801A1 |
A method of synthesizing a diol or a polydiol by reductively coupling carbonyl compounds in a solvent with the use of 12CaO.7Al2O3 having 1019 cm-3 or more but not more than 2.3x1021 cm-3 electrons per cage as a reducing agent. A method ...
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WO/2008/029090A1 |
A process for preparing a salt of compound of Formula (I), (Formula I) wherein R1 and R2 are independently selected from an organic group other than hydrogen, said process comprising reacting a compound of Formula (II), (Formula II) with...
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WO/2008/028843A1 |
The invention relates to a method for producing mixtures containing adiponitrile, characterised by the following method steps: a) reaction of 3-pentenenitrile with hydrogen cyanide in the presence of a hydrocyanation catalyst, a promoter...
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WO/2008/023380A1 |
Process for the preparation of N,N-diethyl-2-cyano-3(3,4-dihydroxy-5-nitrophenyl)acrylamide
having the structure of Formula -IV by condensing 3,4-dihydroxy-5-nitrobenzaldehdye with N,N-diethyl cyanoacetamide in toluene in the presence o...
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WO/2008/019852A1 |
The present invention relates to a process for preparing highly pure alkali metal or alkaline earth metal tricyanomethanides.
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WO/2008/017626A1 |
Distillation of water, 1- and 2 butene and 1,3 butadiene containing a stabilizer in a distillation device K4 to obtain a stream 15 as a bottom product, containing dried 1,3-butadiene, 1- und 2-butene and the stabilizer, and a stream 16 a...
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WO/2008/008928A2 |
The invention provides a continuous process for the production of 3- pentenenitrile, comprising: (a) contacting, in a reaction zone, a hydrogen cyanide-containing feed, a butadiene-containing feed, and a catalyst precursor composition, w...
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WO/2008/008926A2 |
The invention provides a hydrocyanation process for the production of adiponitrile and other dinitriles having six carbon atoms, the process comprising: a) forming a reaction mixture in the presence of at least one Lewis acid, said react...
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WO/2008/008930A2 |
The invention provides a hydrocyanation process for the production of adiponitrile and other dinitriles having six carbon atoms, the process comprising: a) forming a reaction mixture in the presence of at least one Lewis acid, said react...
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WO/2008/007093A1 |
The present invention relates to an improved process for isolation and purification of Entacapone, pharmaceutical compositions and therapeutic uses thereof. The process provides an improved yield and improved isomeric purity of produced ...
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WO/2008/008929A2 |
The invention provides a continuous process for the production of 3-pentenenitrile, comprising: (a) contacting, in a reaction zone, a hydrogen cyanide-containing feed, a 1,3-butadiene-containing feed, and a catalyst precursor composition...
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WO/2008/006977A1 |
The present invention relates to a process for preparing an aqueous solution of HMTBN, from acrolein, without isolating intermediate products, characterized in that: - in a first step, a reaction (1) is carried out between acrolein (2) a...
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WO/2008/008927A2 |
The invention provides a process for hydrocyanation, comprising: contacting 2-pentenenitrile with hydrogen cyanide at a temperature in the range of about 0°C to about 150°C in the presence of at least one Lewis acid promoter and a cata...
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WO/2008/007589A1 |
Disclosed is a method for producing a high-performance polyfunctional compound which can be used as an optical recording material, a material for an optical waveguide, a material for a photo-alignment film or the like, in a simple manner...
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WO/2008/004115A1 |
A process for preparing gabapentin of formula 1, which comprises Formula (I) converting 1-allyl-cyclohexanecarboxaldehyde into 1-allyl-cyclohexanecarbonitrile; ozonizing 1-allyl-cyclohexanecarbonitrile to obtain 1-cyano-cyclohexaneacetal...
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WO/2008/001490A1 |
A zerovalent-nickel complex catalyst which is produced by using a phosphite represented by P(x)(y)(z) (wherein P is phosphorus and x, y, and z each is OR, where R represents C18 or lower aryl) as a ligand to reduce a nickel halide with a...
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WO/2007/147397A2 |
A process for preparing N-acyl-α-amino nitriles having the formula (I), where R1, R2 and R3 are each, independently of one another, hydrogen or an alkyl, aryl, alkenyl or alkynyl group which may optionally be substituted, R4 is hydrogen...
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WO/2007/147547A1 |
A new process for preparation of 3-(2-hydroxy-5-substituted phenyl)-N,alkyl-3- phenylpropylamiηes from cinamoyl chloride via N-alky-3-phenylprop-2-en-1 -amine has been developed.
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WO/2007/147399A2 |
Process for producing a solar absorber coating, which comprises the steps: coating of a substrate with a titanium precursor solution to produce a titanium dioxide layer by the sol-gel technique and heat treatment of the coated substrate ...
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WO/2007/144212A1 |
The invention relates to an apparatus and to a process for continuously preparing ethylene cyanohydrin.
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WO/2007/142189A1 |
Disclosed is an organic lithium zincate as a novel zinc ate complex. Also disclosed are a method for producing such an organic lithium zincate and use of such an organic lithium zincate. Specifically disclosed is t-butyl diethyl lithium ...
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WO/2007/143152A2 |
Provided are processes for the preparation of (3S)-cyano-5-methylhexanoic acid, an intermediate in the synthesis of (S)-pregabalin.
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WO/2007/128803A1 |
The present invention relates to processes for preparing an aminoalkyl-nitrile by reacting a corresponding a monoamine with a corresponding alkenylnitrile in continuous mode, comprising the steps of: (a) feeding the corresponding monoami...
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WO/2007/125052A1 |
The present invention relates to a process for preparing an aromatic or heteroaromatic nitrile in the presence of a supported catalyst which comprises a support having a mean diameter of ≤ 78 µm. The present invention further relates ...
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WO/2007/119376A1 |
Novel oxide catalysts for production of unsaturated acids and unsaturated nitriles that exhibit high reaction performance, being capable of stably maintaining high yield for a prolonged period of time; a method of preparing them; and a p...
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WO/2007/115936A2 |
The invention relates to a method for extractive separation of nickel (0) complexes with phosphorous ligands, from a reaction product of a hydrocyanation of unsaturated mononitriles to give dinitriles, by means of extraction with a hydro...
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WO/2007/113845A1 |
The present invention relates to an 'improved process for the preparation of (E)-N, N- diethyl-2-cyano-3- (3, 4-dihydroxy-5-nitrophenyl) acrylamide formula (I) comprising steps of, (a) condensation of 3, 4-dihydroxy-5-nitrobenzaldehyde w...
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WO/2007/110163A1 |
The invention relates to a method for producing compounds of formula (I), wherein R1, R2, R3 and Z are defined as in the description. The method according to the invention is characterized by reacting a tertiary amine of the formula NR1R...
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WO/2007/110162A1 |
The invention relates to a method for producing compounds of formula (I), wherein R1, R2, R3 and Y are defined as in the description. The method according to the invention is characterized by reacting a tertiary amine of the formula NR1R...
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WO/2007/110161A1 |
The invention relates to a method for producing compounds of formula (I), wherein R1, R2, R3 and Y are defined as in the description. The method according to the invention is characterized by reacting a tertiary amine of the formula NR1R...
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WO/2007/106688A1 |
A method for producing a cyanoacrylate monomer, comprising the steps of (a) reacting cyanoacetate and formaldehyde or paraformaldehyde in the presence of a base or amine base catalyst to form an a-cyanoacrylate prepolymer or oligomer mix...
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WO/2007/102448A1 |
The present invention relates to a process for producing an aliphatic nitrile, including the step of reacting at least one compound selected from the group consisting of an aliphatic monocarboxylic acid, an aliphatic dicarboxylic acid an...
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WO/2007/100086A1 |
Disclosed is a novel asymmetric ligand which can be synthesized by a short process at low cost and is capable of exhibiting higher catalytic activity and enantioselectivity than the conventional ligands derived from sugars. Also disclose...
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WO/2007/094008A2 |
A process for the preparation of 1-cyano-[(4-methoxyphenyl)methyl] cyclohexanol by reacting cyclohexanone with the carbanion of 4-methoxyphenyl acetonitrile in the presence of polyethylene glycol-400 (PEG-400) or Aliquate-336, as a phase...
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WO/2007/093764A1 |
The present invention relates to a process for the cyanation of imines, particularly to the asymmetric cyanation of imines. The Strecker reaction consists of a reaction between an aldehyde and an amine to form an imine, followed by the c...
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WO/2007/093765A1 |
The present invention relates to a process for the cyanation of aldehydes, particularly to the asymmetric cyanation of aldehydes, including the synthesis of chiral cyanohydrins and derivatives thereof, such as chiral O-acyl cyanohydrins....
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WO/2007/094007A1 |
The invention relates to Novel Z form of ENTACAPONE-( Z N1N- Diethyl-2-cyano-3-(3,4-dihydroxy-5-nitrophenyl)-acrylamide . This invention also relates to a process for the preparation of Novel Z form of ENTACAPONE- by treating pure 3- O- ...
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WO2007032019B1 |
The invention relates to novel compound of formula (IV), which is an organic acid salt of N-[(2'-cyanobiphenyl-4-yl)methyl]-(L)-valine ester. This compound is an useful intermediate for process of preparation of Valsartan of formula (I),...
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WO/2007/077572A1 |
A process to prepare (2E) -2-cyano-3- (3 , 4-dihydroxy-5-nitrophenyl) -N, N-diethyl-2- propenamide (Entacapone) eliminating corrosive acids in the purification, with more than 99.5 % purity with a Z-isomer content of less than 0.1% compr...
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