A seven-step synthesis of S-(+)-hydroprene (S-1) in similar to 20% overall yield starting from S-(+)-3,7-dimethyl-1,6-octadiene (2) of 55+/-10% optical purity is described. The introduction of an optical enhancement step in the synthetic sequence at the stage of S-(-)-3,7-dimethyl-1-octanol (9) raises the optical purity of S-1 from similar to 50% to similar to 80%.
The present invention relates to a process for producing 2,6-dimethyl-5-hepten-1-al, which comprises reacting 3,7-dimethyl-1,6-octadiene (dihydromyrcene, beta-citronellene) with N
2
O in a solvent or solvent mixture containing at least one solvent having a proton-donating functional group.
US9765003B2
申请人:——
公开号:US9765003B2
公开(公告)日:2017-09-19
[EN] PROCESS FOR PRODUCING 2,6-DIMETHYL-5-HEPTEN-1-AL<br/>[FR] PROCÉDÉ DE PRÉPARATION DE 2,6-DIMÉTHYL-5-HEPTÉN-1-AL
申请人:BASF SE
公开号:WO2015169721A1
公开(公告)日:2015-11-12
The present invention relates to a process for producing 2,6-dimethyl-5-hepten-1-al, which comprises reacting 3,7-dimethyl-1,6-octadiene (dihydromyrcene, beta-citronellene) with N2O in a solvent or solvent mixture containing at least one solvent having a proton-donating functional group.