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:
A process for producing tetrahydropyran-4-ol, characterized by comprising: a cyclization step in which 3-buten-1-ol, a formaldehyde compound, and formic acid are reacted to form tetrahydropyranyl 4-formate, which is represented by the formula (1); (1) and a solvolysis step in which the tetrahydropyranyl 4-formate is solvoyzed to form tetrahydropyran-4-ol, which is represented by the formula (2).
Abstract:
A process for producing a quinazolin−4−one derivative represented by the following formula (2): (2) (wherein R 1 , R 2 , R 3 , and R 4 each represents a group not participating in the reaction and R 1 , R 2 , R 3 , and R 4 may be bonded to each other to form a ring) which comprises reacting an anthranilic acid derivative represented by the following formula (1): (1) (wherein R 5 represents hydrogen or a hydrocarbon group) with a formic acid derivative in the presence of an ammonium carboxylate.