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    Method for producing chiral 3,4-dehydroprolines
    34.
    发明专利
    Method for producing chiral 3,4-dehydroprolines 未知

    公开(公告)号：AU8335298A

    公开(公告)日：1998-12-21

    申请号：AU8335298

    申请日：1998-06-02

    Applicant: BASF AG

    Inventor： SCHAFER BERND

    IPC: C07D405/12 ,  C07D207/20 ,  C07D207/22 ,  C07D413/12 ,  C07D417/12

    Abstract: PCT No. PCT/EP98/03284 Sec. 371 Date Dec. 1, 1999 Sec. 102(e) Date Dec. 1, 1999 PCT Filed Jun. 2, 1998 PCT Pub. No. WO98/55456 PCT Pub. Date Dec. 10, 1998The invention relates to a process for preparing chiral 3,4-dehydroproline compounds of formula (I), in which R, R' and R'' have the meanings given in the description. The invention is characterized by a pyrrolecarboxylic acid derivative compound of formula (II) reacted first with an alkali or alkaline earth metal in ammonia and then with an aqueous salt solution or a compound of formula (III) in which X is a leaving group to form the final chiral product compound.

    35.
    发明专利
    未知

    公开(公告)号：NO961544L

    公开(公告)日：1996-04-18

    申请号：NO961544

    申请日：1996-04-18

    Applicant: BASF AG

    Inventor： SCHAFER BERND ,  MAYER HORST

    IPC: C07D251/46 ,  B01J27/122 ,  B01J27/138 ,  B01J31/04 ,  B01J31/22 ,  C07D251/16 ,  C07D

    Abstract: PCT No. PCT/EP94/03331 Sec. 371 Date Mar. 29, 1996 Sec. 102(e) Date Mar. 29, 1996 PCT Filed Oct. 10, 1994 PCT Pub. No. WO95/11237 PCT Pub. Date Apr. 27, 1995A process for preparing asymmetrically substituted triazines of the formula I I where R1 is hydrogen, methyl or ethyl, R2 and R3 independently of one another are an unsubstituted or substituted hydrocarbon radical, by reaction of a cyanoguanidine of the formula II II with a carboxylic acid derivative in the presence of an alcohol of the formula III R2-OHIII,which comprises reacting a carboxylic acid ester of the formula IV R3-COOR4IV,where R3 has the abovementioned meaning and R4 is an unsubstituted or substituted hydrocarbon radical, in the presence of a base or of a carboxamide selected from the group consisting of N,N-dialkylformamide, N,N-dialkylacetamide and N-methylpyrrolidone and in the presence of a salt or of a salt-like compound of the elements magnesium, calcium, aluminum, zinc, copper, iron, cobalt, nickel or chromium, is described.

    PREPARATION OF ASYMMETRICALLY SUBSTITUTED TRIAZINES
    37.
    发明专利
    PREPARATION OF ASYMMETRICALLY SUBSTITUTED TRIAZINES 未知

    公开(公告)号：CA2174332A1

    公开(公告)日：1995-04-27

    申请号：CA2174332

    申请日：1994-10-10

    Applicant: BASF AG

    Inventor： MAYER HORST ,  SCHAFER BERND

    IPC: C07D251/16

    Abstract: Described is a method of preparing unsymmetrically substituted triazines of formula (I), in which R1 is hydrogen, methyl or ethyl, R2 and R3, independently of each other, are an optionally substituted hydrocarbon group, by reacting a cyanoguanidine of formula (II) with a carboxylic acid derivative in the presence of an alcohol of formula (III), the method being characterized in that the reaction is carried out with a carboxylic acid ester of formula (IV), in which R3 is as defined above and R4 is an optionally substituted hydrocarbon group, in the presence of a base or a carboxylic acid amide selected from the group comprising N,N-dialkylformamide, N,N-dialkylacetamide and N-methylpyrrolidone and in the presence of a salt or a salt-like compound of one of the elements magnesium, calcium, aluminium, zinc, copper, iron, cobalt, nickel and chromium.

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