PROCESS FOR PREPARATION OF IPCONAZOLE & ITS INTERMEDIATES
摘要:
Processes for preparation of ipconazole, processes for preparation of a compound of formula (V) and processes for preparation of a compound of formula (VI), which is a key intermediate useful for preparation of ipconazole are disclosed.
Process for preparation of azolylmethylcycloalkanol derivatives
申请人:Kureha Chemical Industry Co., Ltd.
公开号:US05466816A1
公开(公告)日:1995-11-14
A process for preparing a derivative of azolylmethylcycloalkanol of the following formula (I) comprising, providing a solid-liquid two-phase mixture of a cycloalkanone derivative of formula (II), an azole compound of formula (III), a metal oxide of formula (IV), and an organic solvent, and adding a sulfonium compound of formula (V) to said solid-liquid two-phase mixture under heating while stirring, ##STR1## wherein R.sup.1 and R.sup.2 individually represent a hydrogen atom or an alkyl group; X is a halogen atom, an alkyl group, a haloalkyl group, a phenyl group, a cyano group, or a nitro group; m is an integer of 0 to 5 (when m is 2 or larger, Xs may be either the same or different); n is an integer of 0 to 2; A represents a nitrogen atom or a group CH; M.sup.1 represents an alkali metal atom or an alkaline earth metal atom; M.sup.2 represents an alkaline earth metal atom, a zinc atom, or two alkali metal atoms; Y represents a halogen atom or a C.sub.1 -C.sub.4 alkoxysulfonyloxy group; and p denotes an integer of 0 or 1.
3-(Unsubstituted or substituted benzyl)-1-alkyl-2-oxocyclopentane carboxylic acid alkyl ester derivatives, and their preparation and use
申请人:KUREHA CHEMICAL INDUSTRY CO., LTD.
公开号:EP0537909A1
公开(公告)日:1993-04-21
3-(unsubstituted or substituted benzyl)-1-alkyl-2-oxocyclopentane carboxylic acid alkyl ester derivative (I)
Methods are disclosed for the preparation of compounds (I) as are their use as fungicides and as intermediates.
Process for the preparation of azolylmethylcycloalkanol derivatives
申请人:KUREHA CHEMICAL INDUSTRY CO., LTD.
公开号:EP0655443A2
公开(公告)日:1995-05-31
A process for preparing a derivative of azolylmethylcycloalkanol of the following formula (I) comprising, providing a solid-liquid two-phase mixture of a cycloalkanone derivative of formula (II), an azole compound of formula (III), a metal oxide of formula (IV), and an organic solvent, and adding a sulfonium compound of formula (V) to said solid-liquid two-phase mixture under heating while stirring,
wherein R¹ and R² individually represent a hydrogen atom or an alkyl group; X is a halogen atom, an alkyl group, a haloalkyl group, a phenyl group, a cyano group, or a nitro group; m is an integer of 0 to 5 (when m is 2 or larger, Xs may be either the same or different); n is an integer of 0 to 2; A represents a nitrogen atom or a group CH; M¹ represents an alkali metal atom or an alkaline earth metal atom; M² represents an alkaline earth metal atom, a zinc atom, or two alkali metal atoms; Y represents a halogen atom or a C₁-C₄ alkoxysulfonyloxy group; and p denotes an integer of 0 or 1.
Alkyl 3-benzylidene-1-alkyl-2-oxocyclopentanecarboxylate derivates as fungicides
申请人:KUREHA CHEMICAL INDUSTRY CO., LTD.
公开号:EP0712836A1
公开(公告)日:1996-05-22
Derivatives of alkyl 3-(substituted or unsubstituted benzylidene)-1-alkyl-2-oxocylopentanecarboxylate of the following formula (I),
wherein R¹ and R² individually represent a lower alkyl group; X is a halogen atom, a cyano group, an alkyl group, a haloalkyl group, a phenyl group, or a nitro group; and m is an integer of 0 to 5; provided when m is 2 or larger, Xs may be either the same or different. The compounds are useful themselves as an effective ingredient of antifungal compositions, and can be used for intermediates of agriculture chemicals and medicines.