公开(公告)号：DE1287057B

公开(公告)日：1969-01-16

申请号：DED0049322

申请日：1966-02-09

Applicant: DEGUSSA

Inventor： KOBERSTEIN ,  EDGAR DR ,  NISCHK ,  WOLFGANG DR

IPC: C07B37/00

公开(公告)号：DE1286046B

公开(公告)日：1969-01-02

申请号：DED0044156

申请日：1964-04-15

Applicant: DEGUSSA

Inventor： FAHNENSTICH ,  RUDOLF DR ,  WEIGERT ,  WOLFGANG DR

IPC: C07D309/06

Abstract: A process for preparing 2,6-diformyl-tetrahydropyrane or 2 - formyl - 6 - hydroxymethyl-tetrahydropyrane comprises subjecting 2-formyl - 3,4 - dihydro - 2H - pyrane or 2 - hydroxymethyl - 3,4 - dihydro - 2H - pyrane respectively, at a temperature of from 100 DEG to 200 DEG C. to the conditions of oxo-synthesis in the presence of carbon monoxide and hydrogen and of a hydroformylation catalyst.