摘要:
A 4-aminoquinazoline derivative can be obtained by the steps of reacting quinazolin-4-one or its derivative with a chlorinating agent in a first organic solvent in the presence of an organic base, and subsequently reacting the reaction product with an amine compound represented by the formula R5—NH—R6 (each of R5 and R6 represents hydrogen or an optionally substituted hydrocarbyl group) in the presence of a second organic solvent.
摘要:
A process for preparing quinazolin-4-one or its derivative by reacting anthranilic acid or its derivative with formic acid or its derivative in the presence of ammonia, or by reacting ammonium anthranilate or its derivative with formic acid or its derivative.
摘要:
A process for preparing quinazolin-4-one or its derivative by reacting anthranilic acid or its derivative with formic acid or its derivative in the presence of ammonia, or by reacting ammonium anthranilate or its derivative with formic acid or its derivative.
摘要:
A 4-aminoquinazoline derivative can be obtained by the steps of reacting quinazolin-4-one or its derivative with a chlorinating agent in a first organic solvent in the presence of an organic base, and subsequently reacting the reaction product with an amine compound represented by the formula R5—NH—R6 (each of R5 and R6 represents hydrogen or an optionally substituted hydrocarbyl group) in the presence of a second organic solvent.
摘要:
A process for producing a quinazolin-4-one compound having the formula: [wherein R1, R2, R3 and R4 each represents a group not participating in the below-mentioned reaction, and R1, R2, R3 and R4 can be combined together to form a ring] which comprises reacting an anthranilic acid derivative having the formula: [wherein R5 is a hydrogen atom or a hydrocarbyl group] with a formic acid derivative in the presence of an ammonium carboxylate.
摘要:
2-Cyclopropyl-4-(4′-fluorophenyl)quinoline-3-carboxyaldehyde useful as a material for pharmaceutical products, can be obtained by reacting 3-cyclopropyl-3-oxopropanenitrile with 2-amino-4′-fluorobenzophenone to obtain 2-cyclopropyl-4-(4′-fluorophenyl)quinoline-3-carbonitrile, and reducing it.
摘要:
A process for producing a quinazolin-4-one compound having the formula: [wherein R1, R2, R3 and R4 each represents a group not participating in the below-mentioned reaction, and R1, R2, R3 and R4 can be combined together to form a ring] which comprises reacting an anthranilic acid derivative having the formula: [wherein R5 is a hydrogen atom or a hydrocarbyl group] with a formic acid derivative in the presence of an ammonium carboxylate.
摘要:
A process comprising a reaction of ethyl 2-amino-4,5-bis(2-methoxyethoxy)benzoate with a formic acid compound in the presence of an ammonium carboxylate gives 6,7-bis(2-methoxyethoxy)quinazolin-4-one in a high yield.
摘要:
6,7-Bis(2-methoxyethoxy)quinazolin-4-one of formula (5) useful in synthesis of an anti-cancer drug can be prepared by a reaction of ethyl 2-amino-4,5-bis(2-methoxyethoxy)benzoate of formula (4) with an orthoformic acid in the presence of an ammonium acetate:
摘要:
A polycyclic pentafluorosulfanylbenzene compound represented by the following general formula (1) and a process for producing the polycyclic pentafluorosulfanylbenzene compound which comprises reacting a specific pentafluorosulfanylbenzene compound with a specific boronic acid compound are provided. The polycyclic pentafluorosulfanylbenzene compound is a novel compound and can be produced by the process industrially advantageously. (R1 to R4 each independently represent hydrogen atom or fluorine atom, R5 represents a hydrocarbon group having at least two cyclic structures which may have substituents, and Z represents keto group, thioketo group, methylene group or difluoromethylene group.)