公开(公告)号：US3876649A

公开(公告)日：1975-04-08

申请号：US28317072

申请日：1972-08-23

Applicant: BASF AG

Inventor： BOELL WALTER ,  KOENIG HORST

IPC: C07D321/06 ,  C07C67/00 ,  C07C313/00 ,  C07C317/08 ,  C07C317/14 ,  C07C317/18 ,  C07D213/65 ,  C07D213/66 ,  C07D213/67 ,  C07D307/18 ,  C07D307/30 ,  C07D491/04 ,  C07D491/048 ,  C07D491/056 ,  C07D31/36

CPC classification number: C07D491/04 ,  C07D213/67 ,  C07D307/30

Abstract: Production of 2-methylpyridin-3-ol derivatives including pyridoxine derivatives and pyridoxine (vitamin B.sub.6) itself by reaction of 4-methyloxazole with derivatives of 1,4-disubstituted but-2-en-2-ylsulfones in the manner of a Diels-Alder reaction.