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WO/2018/145660A1 |
The present invention relates to a fully continuous flow synthesis process for use with 2-methyl-1,4-naphthoquinone and an integrated continuous flow reactor for use in achieving said process; the synthesis process uses 2-methylnaphthale...
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WO/2018/089507A1 |
A method for producing thymoquinone and/or thymohydroquinone in Monarda by growing Monarda with elevated levels of carvacrol and/or thymol in the fresh plant tissue and vigorous growth, harvesting the Monarda, leaving the Monarda to sene...
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WO/2018/044150A1 |
The present invention relates to a method for producing demethylbelamcandaquinone B from Labisia pumila and use thereof. The method is characterized by the steps of obtaining an extract from Labisia pumila plant material using water extr...
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WO/2017/151111A1 |
Improved systems and methods for producing synthetic hypericin at high volume and high purity.
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WO/2017/145716A1 |
In this production method according to the present disclosure, a 1,1'-binaphthyl derivative precursor having, at each of the 2-position and 2'-position of a 1,1'-binaphthyl skeleton, an electron-donating group including an oxygen atom di...
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WO/2017/104798A1 |
The objective of a first invention of the present invention is to provide a method that makes it possible to efficiently produce an oxidation reaction product of a hydrocarbon or derivative thereof using the hydrocarbon or derivative the...
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WO/2017/105682A1 |
A phenylene ether oligomer is prepared by a process that includes partially converting 2,6-dimethylphenol to 3,3',5,5'-tetramethyl-4,4'-dihydroxybiphenyl and/or 3,3',5,5'-tetramethyldiphenoquinone, converting the residual 2,6 dimethylphe...
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WO/2017/033557A1 |
Provided is a method for producing a large amount of 2-hydroxy-1,4-naphthoquinone with a high yield and at a low cost. This method comprises oxidizing 2-hydroxynaphthalene with hydrogen peroxide water in the presence of a vanadium cataly...
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WO/2016/207252A1 |
A method of preparing a compound represented by general formula (3) : Formula (3). R1 and R2 are each independently an alkyl group. The method includes reacting a compound represented by general formula (2) : Formula (2) with an alkylami...
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WO/2016/201852A1 |
Provided are a photoreaction device and a system for preparing a compound. The photoreaction device comprises a reaction vessel (100) and a light source (400), wherein the reaction vessel (100) defines a photoreaction space (200), and th...
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WO/2016/199789A1 |
The present invention addresses the problem of efficiently synthesizing a trifluoromethyl substituted semisquarate in a short process, in order to manufacture trifluoromethyl compounds with various functionalities. A method was developed...
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WO/2016/144782A1 |
Substantially homogeneous and stable suspensions of anthraquinone (AQ) compositions and methods of preparation are disclosed. The AQ compositions are utilized in pulping processes.
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WO/2016/060670A1 |
This invention discloses a method of making vitamin K1. The mentioned method of making vitamin K1 comprises performing a first one-pot synthesis with base catalyst, performing a first hydrolysis, performing a substitution, and performing...
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WO/2016/038146A1 |
The present invention relates to a new crystal form of ubidecarenone, wherein the ratio of the crystal surface area measured in µm2 per volume measured in µm3 of the ubidecarenone crystals is greater than 2 and wherein the crystal form...
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WO/2015/169898A1 |
The present invention relates to an improved process for the production of 2,6-dimethylbenzoquinone (2,6-DMQ) by oxidation of 2,6-dimethylphenol with oxygen in the presence of a copper salt.
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WO/2015/002151A1 |
Provided is a method for stabilizing DHNA or a vitamin contained in a food, a beverage and or like under an environment which can be subjected to natural light or artificial light, e.g., a transparent container, without requiring the use...
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WO/2015/000767A1 |
The invention relates to a method for producing 2,3,5-trimethyl benzoquinone or a compound containing 2,3,5-trimethyl benzoquinone, the method comprising the following steps: Oxidation of 2,3,6-trimethylphenol with oxygen or an oxygen-co...
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WO/2013/159593A1 |
The present invention relates to the biological field, and provides a method for extracting coenzyme Q10 and an application of the coenzyme Q10. The extracting method comprises: A. drying palm residues; B. extracting the dried palm resid...
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WO/2013/121190A1 |
The present invention discloses a simple method for transforming cashew nut shell liquid into an active herbicidal composition.
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WO/2013/121873A1 |
This production method for a biaryl compound includes a step in which phenol or naphthol is reacted in the presence of tetrabutylammonium iodide and either tert-butyl hydroperoxide or hydrogen peroxide.
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WO/2013/041676A1 |
The present invention relates to a process of preparing tocotrienol quinones. It has been found that this process allows the formation of the R-isomer in a high yield in a very efficient and economically interesting way. Said process is ...
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WO/2013/002265A1 |
Provided is a method of production for obtaining, at high yield, a 2-chloromethylbenzaldehyde-containing liquid composition that is very useful in industry. More specifically, provided is a method for producing 2-chloromethylbenzaldehyde...
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WO/2012/173909A2 |
The invention provides a method for synthesizing 7-Acetyleno quinone methide compounds that is safe and inexpensive. The meod avoids the need for extremely cold reaction temperatures and unlike the prior art does not require any highly e...
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WO/2012/153162A1 |
Provided is a process of preparation of 2-[trans,-4-(4'-chlorophenyl)cyclohexyl]-3-hydroxy- 1,4-naphthoquinone, i.e. Atovaquone [I] which is cost effective, green, and eco-friendly process, without separation of any diastereomers or geom...
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WO/2012/080243A2 |
Disclosed herein is novel process for preparation of atovaquone, which process includes reacting1H-2-benzopyran-1,4(3H)-dione with 4-(4-chlorophenyl)cyclohexanecarbaldehyde. The invention further discloses novel intermediates useful in t...
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WO/2012/055253A1 |
A regeneration method of chromatographic silica gel, especially a regeneration method of silica gel for chromatographing coenzyme Q10 is provided, wherein a high polar solvent is fed from the bottom of the chromatographic column to wash ...
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WO/2012/041918A2 |
The present invention relates to a process for the preparation of aqueous hydrogen peroxide from the anthraquinone (AO) loop process, comprising using at least one alkylanthraquinone of formula (I) wherein -R1, R2 and R3 are chosen from ...
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WO/2012/028905A1 |
The present invention describes a process for producing 2-methyl-l,4-naphthoquinone by oxidizing 2-methylnaphthalene with fresh hydrogen peroxide in the presence of glacial acetic acid without any mineral or transition metal catalyst.
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WO/2011/141595A1 |
The invention relates to a method for the catalytic oxidation of anthracenes to anthraquinones, including a catalytic system based on copper compounds of formula TpxCu(NCMe), that promotes the selective oxidation of anthracene and 2-ethy...
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WO/2011/113284A1 |
Shikonin naphthazarin derivatives represented by formula I and their preparation method are disclosed, wherein Ri~R4 and R are defined as in the description. The antitumor use of the compounds is also disclosed.
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WO/2011/112679A1 |
The present invention is directed to a method of synthesizing a compound of Formula I: the method comprising oxidizing alpha-tocopherol with a metal salt oxidizing agent to form the compound of Formula I, wherein the stoichiometric ratio...
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WO/2011/085945A1 |
The present invention discloses a process for the production of 2-methyl-1,4-naphthoquinone and its bisulfite adducts, comprising the following steps: a) oxidizing 2-methyl-naphthalene (2-MNA) to achieve an organic phase containing 2-met...
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WO/2011/034922A1 |
The present invention provides a method for making hypericin comprising the steps of converting a protohypericin to a protohypericin salt, and irradiating the protohypericin salt with visible light to form hypericin. The present inventio...
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WO/2011/030350A1 |
A process for preparation of 4,5-Dihydroxy-9,10-dioxo-9,10-dihydro-anthracene-2-carbaldeh
yde from 1,8-Dihydroxy-3-hydroxymethyl-anthraquinone comprising of aerial oxydation of 1,8-Dihydroxy-3-hydroxymethyl-anthraquinone at oxygen pressu...
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WO/2011/022286A1 |
The application relates to quinhydrone (RN=106-34-3) containing sensors (10) for e.g. potentiometric measurements, especially in vivo measurements such as potentiometric pH measurements in wounds. In particular, the application describes...
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WO/2010/121638A1 |
The present invention discloses a process for the recovery of Menadione from spent mother liquor containing a Menadione Bisulfite derivative, whereby the pH of the mother liquor is increased.
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WO/2010/113900A1 |
Disclosed is a production method for ubiquinone powder for use in preparations that involves a process (1) for obtaining compressed fragments by compression molding ubiquinone crystal powder at a linear molding pressure of 0.6-2.5 ton/cm...
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WO/2010/054452A1 |
The invention belongs to the chemical pharmaceutical field, and the new compounds of the pterocarpanquinone family having formula (I) according to the invention can be reduction activated, generating alkylating species in the intracellul...
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WO/2010/034999A1 |
A compound of formula (I) in solid form, preferably crystalline form.
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WO/2010/035000A1 |
Using a combination of Kumada, Suzuki and Biellmann chemistry, various menaquinones can synthesised rapidly and with stereochemical integrity offering a new way of preparing these vitamin K2 components for the pharmaceutical market. In o...
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WO/2010/023686A2 |
Disclosed herein discloses a crystalline form of 2-Chloro-3-[4-(4-chlorophenyl) cyclohexyl] [l,4]naphthoquinone and process for preparing the same and use thereof. The present invention also provides a process for producing 2-[4-(4- chlo...
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WO/2010/009492A1 |
Atovaquone or a pharmaceutically acceptable salt thereof having a particle size diameter range with a D90 of between greater than 3 to about 10µm.
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WO/2010/001378A1 |
Provided is a process for the epimerization of the cis isomer of atovaquone, atovaquone intermediates and isomeric mixtures thereof into their corresponding trans-isomers resulting in higher yield of pure atovaquone.
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WO/2010/001379A1 |
The invention provides novel intermediates of atovaquone and use thereof for the preparation of atovaquone
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WO/2009/122432A2 |
The present invention relates the use of 2, 3-dihalonaphthoquinone compounds of Formula (I) wherein R1 and R2 are leaving groups like halogens selected from the group comprising Cl, Br, I and F and the R1 and R2 may be the same halogen o...
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WO/2009/106910A1 |
Process for the preparation of aloe-emodin from aloin comprising oxidizing aloin by treatment with an oxygen containing gas, in an acid reaction medium, in the presence of a copper salt catalyst.
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WO/2009/098082A2 |
The present invention relates to naphthoquinone derivatives isolated from solid callus cultures from two species of the palaeotropical plant families Dioncophyllaceae and Ancistrocladaceae. It further relates to methods of their producti...
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WO/2005/113478A9 |
A process for the preparation of hydroxyl substituted anthraquinones is described. The process couples a phthalic anhydride (substituted or unsubstituted) to benzene ring moiety substituted with at least two hydroxyl groups. Remaining hy...
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WO/2009/007991A2 |
Disclosed herein is novel process for preparation of Atovaquone, which process includes reacting 1,4-naphthoquinone with trans-4-(4-chlorophenyl) cyclohexane carboxylic acid followed by halogenation to obtain dihalo-compound, further deh...
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WO/2008/139290A1 |
The invention concerns a new process for the preparation of naphthoquinones, in particular an improved process for the preparation of 2,3-disubstituted 1,4- naphthoquinones, in the trans configuration.
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