中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

147 records (took 0.023 seconds)

    Preparation of optically active 2,3-diarylepoxide compounds comprises epoxidizing diaryl compounds and optionally separating the obtained enantiomeric mixture
    35.
    发明专利
    Preparation of optically active 2,3-diarylepoxide compounds comprises epoxidizing diaryl compounds and optionally separating the obtained enantiomeric mixture 未知

    公开(公告)号：DE102005035395A1

    公开(公告)日：2007-02-01

    申请号：DE102005035395

    申请日：2005-07-28

    Applicant: BASF AG

    Inventor： STUERMER RAINER ,  NOACK RAINER ,  GOETZ ROLAND ,  HUENGER UDO ,  BRUNS JENS

    IPC: C07D301/12 ,  B01J31/02 ,  C07D301/32 ,  C07D405/06 ,  C12P17/02 ,  C12P41/00

    Abstract: Preparation of optically active 2,3-diarylepoxide compounds (Ia)-(Id) comprises epoxidizing diaryl compounds (IIa) or (IIb) and optionally separating the obtained enantiomeric mixture. Preparation of optically active 2,3-diarylepoxide compounds of formula (Ia)-(Id) comprises epoxidizing diaryl compounds of formula (IIa) or (IIb) and optionally separating the obtained enantiomeric mixture. R : CH2X, CHO, CH=NR1>, CH=NNR2>, COOH, COOR3>, CONR4>R5> or CN; X : OH, O-SO2R6> or halo; R1>H, OH, 1-8C-alkyl or aryl; R2>H, 1-8C-alkyl or aryl; R3>1-8C-alkyl, 2-8C-hydroxyalkyl or arylalkyl; either R4>, R5>H, 1-8C-alkyl, 2-8C-hydroxyalkyl, aryl or arylalkyl; or R4>R5>N : 5-6 membered (un)saturated ring with 1-3 heteroatoms; and R6>1-8C (halo)alkyl or aryl. Independent claims are included for: (1) new 2,3-diarylepoxide compounds (Ia)-(Id); and (2) preparation of (1,2,4)triazol-1-ylmethyloxirane compounds of formula (IIIa) or (IIIb) comprising either reductive amination of (Ia) or (Ib) (when R is CHO) in the presence of 1H-(1,2,4)triazole or reduction of (Ia) or (Ib) (when R is CONR4>R5> and NR4>R5> form a 1H-(1,2,4)triazole-1-yl ring). Provided that: (a) in (Ia) and (Ib) R is not CH2X or COOH; and (b) R4> and R5> may also be 1-8C hydroxyalkyl. [Image] [Image] [Image].

    METHOD FOR PRODUCING 1-SUBSTITUTED 5-HYDROXYPYRAZOLES
    36.
    发明专利
    METHOD FOR PRODUCING 1-SUBSTITUTED 5-HYDROXYPYRAZOLES 未知

    公开(公告)号：HU224041B1

    公开(公告)日：2005-05-30

    申请号：HU0104185

    申请日：1999-10-30

    Applicant: BASF AG

    Inventor： GOETZ NORBERT ,  GOETZ ROLAND ,  RACK MICHAEL

    IPC: C07B61/00 ,  C07C243/30 ,  C07D231/20 ,  C07D231/18

    Abstract: A process for preparing compounds of the formula Iin which R1 is hydrogen, an aliphatic group having 1-8 carbon atoms, Cl-C6-alkoxycarbonyl, Cl-C6-alkylthiocarbonyl or a cyclic ring system having 3-14 ring atoms, and R2 is hydrogen, an aliphatic group having 1-8 carbon atoms, or R1 and R2 together with the carbon atom to which they are bound form a cyclic or bicyclic ring system having 3-14 ring atoms, comprises the preparation of compounds of the formula IIin which R3 and R4 are readily detachable groups and R1 and R2 are as defined above, as starting materials or intermediates and the cyclization of these under suitable reaction conditions to give compounds of the formula I. The intermediates of the formula II are novel.

    METHOD FOR PRODUCING OXIME ETHERS
    37.
    发明专利
    METHOD FOR PRODUCING OXIME ETHERS 未知

    公开(公告)号：HU0300558A2

    公开(公告)日：2003-07-28

    申请号：HU0300558

    申请日：2001-04-04

    Applicant: BASF AG

    Inventor： GOETZ ROLAND ,  RACK MICHAEL ,  WOLF BERND

    IPC: C07B61/00 ,  C07C249/12 ,  C07C251/38 ,  C07C249/14

    Abstract: A process for preparing oxime ethers of the formula I,in which the substituents R and R can be identical or different and can each be cyano, alkyl, haloalkyl, cycloalkyl, phenyl and naphthyl, and R can be alkyl, by alkylation of oximes of the formula IIunder basic conditions with an alkylating agent from the group of alkyl halides, dialkyl sulfates and dialkyl carbonates, wherein the reaction is carried out in a mixture consisting of5 to 25% by weight of polar aprotic solvents selected from the group of nitrites, N-alkylpyrrolidones, cyclic urea derivatives, dimethylformamide and dimethylacetamide,55 to 95% by weight of nonpolar solvents selected from the group of aliphatic hydrocarbons, aromatic hydrocarbons, alkyl alkylcarboxylates and ethers, and0 to 25% by weight of water, the contents thereof totaling 100%.

Patent Agency Ranking