公开(公告)号：DE59902540D1

公开(公告)日：2002-10-10

申请号：DE59902540

申请日：1999-11-30

Applicant: BASF AG

Inventor： RAHN DR ,  RUST HARALD ,  RUEHL DR ,  HENKELMANN DR ,  STUTZ DR

IPC: C07C29/16 ,  C07C29/80 ,  C07C29/82 ,  C07C33/025 ,  C07C33/042 ,  C07C33/048

Abstract: Distillative recovery of alpha -ethynyl-carbinols (I) from the liquid reaction mixture from the addition of acetylene to alpha , beta -unsaturated carbonyl compounds comprises continuous distillation, in which the feed is passed to the middle of the distillation column, most of the water is distilled off at the top as azeotrope with the solvent and (I) is recovered below the feed port.

公开(公告)号：DE59706425D1

公开(公告)日：2002-03-28

申请号：DE59706425

申请日：1997-10-20

Applicant: BASF AG

Inventor： STROEZEL MANFRED ,  RHEUDE DR ,  RAHN DR ,  KAIBEL DR

IPC: C07B49/00 ,  C07C29/124 ,  C07C29/40 ,  C07C31/00 ,  C07C33/02

Abstract: A process for carrying out exothermic reactions comprises (a) addition reaction of an organomagnesium halide of formula RMgX with a carbonyl compound; and (b) hydrolysis of the addition product in a solvent or solvent mixture, in which much of the heat liberated in the reaction is removed by evaporation of the solvent. R = 1-6C alkyl, alkenyl or alkynyl, or aryl; X = Cl, Br or I.