3-(2-Alkoxycarbonyloxy-Phenyl) Acrylic Acid Esters And Their Use As Precursors For The Delivery Of Olfactory Compounds
申请人:Flachsmann Felix
公开号:US20080269102A1
公开(公告)日:2008-10-30
A compound of formula (I), their use as precursors and a method of their production
wherein n, Y, R, R
2
, R
3
, and R
4
has the same meaning as given in the specification.
3-(2-Alkoxycarbonyloxy-Phenyl) Acrylic Acid Esters and Their Use as Precursors for the Delivery of Olfactory Compounds
申请人:FLACHSMANN Felix
公开号:US20100137627A1
公开(公告)日:2010-06-03
A compound of formula (I), their use as precursors and a method of their production
wherein n, Y, R, R
2
, R
3
, and R
4
has the same meaning as given in the specification.
A two-step straightforward method for the preparation of ortho-alkylated vinylarenes from readily available benzoic acids is described. The synthetic route involves the dearomatization of benzoic acids by Birchreduction providing alkylated cyclohexa-2,5-dienyl-1-carboxylic acids. The diene subsequently undergoes a decarboxylative C–H olefination followed by rearomatization to deliver ortho-alkylated