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公开(公告)号:US5235068A
公开(公告)日:1993-08-10
申请号:US915747
申请日:1992-07-21
申请人: Masayoshi Minai , Michitada Kondo , Yuji Ueda , Seiichi Kai , Takayuki Higashii
发明人: Masayoshi Minai , Michitada Kondo , Yuji Ueda , Seiichi Kai , Takayuki Higashii
IPC分类号: C07C45/46 , C07D207/32 , C07D207/333 , C07D307/46 , C07D307/54 , C07D307/80 , C07D333/22 , C07D333/24 , C07D333/28 , C07D333/56 , C07D409/06
CPC分类号: C07D207/333 , C07C45/46 , C07D307/46 , C07D307/54 , C07D307/80 , C07D333/22 , C07D333/24 , C07D333/28 , C07D333/56 , C07D409/06
摘要: Acylaromatic compounds ##STR1## (Q: aromatic compound residue; R: straight, branched or cyclic aliphatic group, aromatic group or araliphatic group) are prepared in high yield by a reaction, in the presence of a boron trifluoride complex catalyst, of an aromatic compound with ##STR2## (X: H, Cl, Br; Y: Cl, Br) or with RCOOH in the presence of (XYCHCO).sub.2 O.
摘要翻译: 酰化芳族化合物通过在三氟化硼配合物催化剂存在下,通过芳族化合物的芳香族化合物(Q:芳族化合物残基; R:直链,支链或环状脂族基团,芳族基团或芳脂族基团) 在(XYCHCO)2 O存在下与
(X:H,Cl,Br; Y:Cl,Br)或与RCOOH化合。 -
公开(公告)号:US4812585A
公开(公告)日:1989-03-14
申请号:US108467
申请日:1987-10-15
申请人: Michitada Kondo , Masayoshi Minai , Seiichi Kai , Takayuki Higashii , Yuji Ueda
发明人: Michitada Kondo , Masayoshi Minai , Seiichi Kai , Takayuki Higashii , Yuji Ueda
IPC分类号: C07D307/46 , C07D307/54
CPC分类号: C07D307/46 , C07D307/54
摘要: 2-Acylfuran derivatives ##STR1## (R: alkyl, phenyl, etc.; R.sub.1 : H, alkyl) are prepared in high yield by reaction, in the presence of a boron trifluoride complex catalyst, of a furan compound ##STR2## (X: H, Cl, Br; Y: Cl, Br) or with RCOOH in the presence of (XYCHCO).sub.2 O.
摘要翻译: 2-呋喃基衍生物通过在三氟化硼配合物催化剂的存在下,通过在呋喃化合物(X)(X)中的反应制备高收率的(R:烷基,苯基等; R 1:H,烷基) :H,Cl,Br; Y:Cl,Br)或与RCOOH在(XYCHCO)2 O存在下反应。
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公开(公告)号:US4957867A
公开(公告)日:1990-09-18
申请号:US055362
申请日:1987-05-29
申请人: Masayoshi Minai , Yuji Ueda , Takayuki Higashii , Michitada; Kondo , Seiichi Kai
发明人: Masayoshi Minai , Yuji Ueda , Takayuki Higashii , Michitada; Kondo , Seiichi Kai
摘要: A process for preparing an optically active cyclopentenone of the formula: ##STR1## wherein R is a hydrogen atom or a lower alkyl group and n is an integer of 4 to 8, which comprises contacting a dl-cyclopentenone ester of the formula: ##STR2## wherein R and n are each as defined above and R' is a lower alkyl group optionally substituted with halogen on an enzyme having a capability of hydrolyzing selectively either one of the d- or l-form isomer in the dl-cyclopentenone ester (II) in an aqueous medium for asymmetric hydrolysis.
摘要翻译: 一种制备下式的光学活性环戊烯酮的方法:其中R是氢原子或低级烷基,n是4至8的整数,其包括使下式的dl-环戊烯酮与式 (II)其中R和n各自如上所定义,R'是任选被卤素取代的低级烷基,该酶具有选择性地水解d-或l-型异构体中的任一种的能力 dl-环戊烯酮酯(II)在不溶性水解的水性介质中。
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