A method of the preparation of N-hydroxy aspartic acid derivate
申请人:HOECHST CELANESE CORPORATION
公开号:EP0452094A2
公开(公告)日:1991-10-16
The present invention pertains to a method of preparing substituted and unsubstituted N-hydroxy-2-aminobutane diacid derivatives which can be dehydrated to 2-aminobut-2-ene dioic acid derivatives, which can be subsequently converted to pyridine and quinoline derivatives.
Process for preparing pyridinecarboxylic acid derivatives
申请人:HOECHST CELANESE CORPORATION
公开号:EP0511446A2
公开(公告)日:1992-11-04
The present invention pertains to a method of preparing substituted and unsubstituted N-hydroxy-2-aminobutane diacid derivatives. The invention also pertains to the use of N-hydroxy-2-aminoethane derivatives (including the N-hydroxy-2-aminobutane diacid derivatives) in the preparation of pyridine derivatives.