Abstract:
3-Ä2-Cyclopropyl-4-(4-fluorophenyl)-3-quinolylÜprop-2-enenitrite is prepared by reacting 2-cyclopropyl-4-(4-fluorophenyl)quinoline-3-carbaldehyde with acetonitrile in the presence of a base and then adding a dehydrating to the reaction mixture to conduct dehydration. Under ordinary conditions, novel 3-Ä2-cyclopropyl-4-(4-fluorophenyl)-quinolin-3-ylÜ-3-hydroxypropionitrile is formed as an intermediate in the above reaction. Incidentally, when the above reaction is conducted in an organic solvent, 3-Ä2-cyclopropyl-4-(4-fluorophenyl)-3-quinolylÜ-prop-2-enenitrite is directly formed.
Abstract:
3-[2-Cyclopropyl-4-(4-fluorophenyl)-3-quinolyl]prop-2-enenitrile is prepared by reacting 2-cyclopropyl-4- (4-fluorophenyl)quinoline-3-carbaldehyde with acetonitrile in the presence of a base and then adding a dehydrating agent to the reaction mixture to conduct dehydration. Under ordinary conditions, novel 3-[2-cyclopropyl-4-(4-fluorophenyl)-quinolin-3-yl]-3-hydroxypropionitrile is formed as an intermediate in the above reaction. Incidentally, when the above reaction is conducted in an organic solvent, 3-[2- cyclopropyl-4-(4-fluorophenyl)-3-quinolyl]prop-2-enenitrile is directly formed.
Abstract:
A process for the production of 4-aminotetrahydropyrans represented by the general formula (2) and salts thereof with acids: [wherein R is hydrogen or a hydrocarbon group], characterized by subjecting a 4-hydrazinotetrahydropyran represented by the general formula (1) or a salt thereof with an acid: [wherein R is as defined above] to decomposition in the presence of at least one compound selected from among Raney nickel, noble metal catalysts, and metal oxides; intermediates for the process; and a process for the production of the intermediates.
Abstract:
[PROBLEMS] A process for obtaining 6,7-bis(2-methoxyethoxy)quinazolin-4-one in a high yield from ethyl 2-amino-4,5bis(2-methoxyethoxy)benzoate. [MEANS FOR SOLVING PROBLEMS] The process for producing 6,7-bis(2-methoxyethoxy)quinazolin-4-one comprises reacting ethyl 2-amino-4,5-bis(2-methoxyethoxy)benzoate with a formic acid compound in the presence of an ammonium carboxylate.
Abstract:
Provided is an aryloyl(oxy or amino)pentafluorosulfanylbenzene compound having pharmacological action. The present invention relates to an aryloyl(oxy or amino)pentafluorosulfanylbenzene compound represented by general formula (A-I), a pharmaceutically acceptable salt thereof, and a prodrug thereof; wherein all of parameters represent the same meanings as defined in the specification.
Abstract:
The present invention relates to a benzobis(thiadiazole) derivative represented by the formula (1): wherein R represents a group containing at least one fluorine atom (with the proviso that fluorine atom (F) and trifluoromethyl group (-CF 3 ) are excluded), and m represents an integer of from 1 to 10.
Abstract:
A process for producing a tetrahydropyranyl-4-sulfonate characterized by reacting 3-buten-1-ol, which is easily available, with a formaldehyde compound and an organic sulfonic acid; and a process suitable for the industrial production of a 4-aminotetrahydropyran derivative, by which the derivative can be produced in high yield under mild conditions through a simple procedure.
Abstract:
The present invention relates to a benzobis(thiadiazole) derivative represented by the following general formula (1): wherein R 1 represents a linear or branched alkyl group, or any one of the groups of the following formula (2): wherein R represents a linear or branched alkyl group; R 2 represents a hydrogen atom; and R 3 represents a hydrogen atom, a linear or branched alkyl group, or any one of the groups of the formula (2); with the proviso that at least one of R 1 and R 3 represents any one of the groups of the formula (2); and two R 1 groups, two R 2 groups, and two R 3 groups may be the same as, or different from each other.
Abstract:
A process for producing tetrahydropyran-4-one, which is represented by the formula (1), characterized by reacting at least one of dihydropyran-4-one and pyran-4-one, which are represented by the formula (2): (2) (wherein (A) indicates a single bond or double bond), with hydrogen either (a) in a mixed solvent comprising an aprotic solvent and an alcohol solvent in the presence of a metal catalyst or (b) in a hydrophobic organic solvent in the presence of an anhydrous metal catalyst obtained by dehydrating a hydrous metal catalyst.