公开(公告)号：US10023550B2

公开(公告)日：2018-07-17

申请号：US15303976

申请日：2015-04-08

Applicant: BASF SE

Inventor： Timon Stork ,  Martine Dehn ,  Klaus Ebel ,  Karl Beck ,  Axel Salden ,  Ralf Pelzer

IPC: C07D319/06 ,  C07D309/10 ,  C07C43/303 ,  C07D309/18 ,  C11B9/00

Abstract: The present invention relates to a method for the production of 2-substituted 4-hydroxy-4-methyltetrahydropyrans from the acid-catalyzed reaction of 3-methylbut-3-ene-1-ol with an aldehyde, a stable odoriferous quality being achieved and avoiding off-odors that interfere with the odor sensation.