公开(公告)号：DE3826807A1

公开(公告)日：1990-02-08

申请号：DE3826807

申请日：1988-08-06

Applicant: HOECHST AG

Inventor： SCHWERTFEGER WERNER DR ,  HINTZER KLAUS DR ,  BLICKLE PETER DR

IPC: B01J27/12 ,  B01J27/135 ,  C07B61/00 ,  C07C51/58 ,  C07C53/50 ,  C07C59/135

Abstract: Fluorinated carboxylic acid fluorides of the formula I (I) can be prepared from fluorinated vinyl ethers of the formula II (II) by reacting the vinyl ethers with an oxygen-containing gas in the presence of a catalytic amount of a Lewis acid. Perfluorinated carboxylic acids and derivatives thereof can be prepared from the carboxylic acid fluorides by secondary reactions, for example hydrolysis, esterification or aminolysis.

公开(公告)号：DE3443303A1

公开(公告)日：1986-06-05

申请号：DE3443303

申请日：1984-11-28

Applicant: HOECHST AG

Inventor： BLICKLE PETER DR

IPC: C07C51/16 ,  C25B3/23 ,  C25B3/02

Abstract: 3-Hydroxy-3-methylglutaric acid is prepared by electrolysis of an aqueous alkaline solution of 3-methyl-1,3,5-pentanetriol using anodes coated with nickel oxide/hydroxide NiO(OH) and conventional cathodes, followed by acidification of the alkaline solution and conventional working up. The yields achieved by this are always between about 70 and 85% of theory.