公开(公告)号：US3896150A

公开(公告)日：1975-07-22

申请号：US28317172

申请日：1972-08-23

Applicant: BASF AG

Inventor： HOFFMAN WERNER

IPC: A23L27/20 ,  C07C45/51 ,  C07C47/263 ,  C07C49/258 ,  C07D319/06 ,  C11B9/00 ,  C07D15/04

CPC classification number: C07C45/515 ,  A23L27/2024 ,  C07C45/60 ,  C07D319/06 ,  C11B9/0015 ,  C07C49/258 ,  C07C47/263

Abstract: 2,6,10-TRIMETHYLDODECA-2,6,11-TRIEN-10-OL-1-AL (I) and its acetals and a process for the production of these important precursors of sinensal via the new acetals of 2,6-dimethyl-2,6undecadien-10-on-1-al (V). (I) is obtained from acetals of 2methyl-6-oxo-hept-2-en-1-al by vinylation or ethynylation followed by partial hydrogenation; reaction of the new allyl alcohols obtained with diketene or an acetoacetic ester to form the new acetals (V); vinylation or ethynylation followed by partial hydrogenation of the new acetals (V) and acid hydrolysis.

公开(公告)号：US3609192A

公开(公告)日：1971-09-28

申请号：US3609192D

申请日：1969-03-28

Applicant: BASF AG

Inventor： HOFFMAN WERNER ,  PASEDACH HEINRICH

IPC: C07C45/67 ,  C07C45/68 ,  C07C47/20 ,  C07C47/21 ,  C07C49/20 ,  C07C49/203 ,  C07C49/225 ,  C07C49/242 ,  C07C49/794 ,  C07C59/76 ,  C11B9/00 ,  C07C49/76 ,  C07C49/24

CPC classification number: C07C403/16 ,  C07C45/676 ,  C07C45/68 ,  C07C47/21 ,  C07C49/203 ,  C07C49/225 ,  C07C49/242 ,  C07C49/794 ,  C07C59/76 ,  C07C2601/14 ,  C11B9/0015

Abstract: Production of alk-1-en-5-ones and alk-1-en-5-als having the general formula (I): in which R1, R2 and R3 each denotes a hydrogen atom or a hydrocarbon radical having from one to 40 carbon atoms which may be joined together in pairs to form five-membered to sevenmembered rings and which may contain oxygen atoms as heteroatoms and in which R4 denotes a hydrogen atom or a hydrocarbon radical having one to 40 carbon atoms which may also contain oxygen atoms as heteroatoms. Said compounds I being formed by reacting an allyl alcohol having the formula (II): at a temperature of from 50* to 350* C. with an acyl malonate having the formula (III): in which the radicals R5 and R6 denote identical or different alkyl groups having from 1 to 8 carbon atoms, and the resultant intermediate product having the general formula (IV): is hydrolyzed and decarboxylated.