[EN] COMPOSITIONS COMPRISING ODORANTS<br/>[FR] COMPOSITIONS COMPRENANT UNE MATIÈRE ODORISANTE
申请人:S H KELKAR AND COMPANY LTD
公开号:WO2019030122A1
公开(公告)日:2019-02-14
The present invention relates to odorous 2- and/or 3-substituted 3-(allyloxy)propenes which are useful as fragrance or flavor ingredients in particular in providing green, fruity, pear and/or waxy olfactory notes. The present invention also relates to novel perfume, aroma or deodorizing/masking compositions comprising said odorants.
Cyclopropanecarboxaldehydes and their use in perfume compositions
申请人:International Flavors & Fragrances Inc.
公开号:US07087796B1
公开(公告)日:2006-08-08
The present invention is directed to novel cyclopropanecarboxaldehyde compounds of the general formula
wherein R is a straight, branched, or cyclic hydrocarbon moiety consisting of 1 to 30 carbon atoms and containing single and/or double bonds.
A new asymmetric total synthesis of (-)-malyngolide is described. This synthesis is based on the originally developed catalytic asymmetric IMCP reaction; that is, α-diazo-β-keto sulfone (13) was successfully converted to cyclopropane (12) in 92 % yield with excellent enantioselectivity (97% ee), and cyclopropane (12) was successfully converted to (-)-malyngolide.
Continuous Production Method for 2-Methylene Alkanals
申请人:OXEA GmbH
公开号:US20190218166A1
公开(公告)日:2019-07-18
The present invention relates to the continuous production of 2-methylene alkanals in a tube reactor, wherein in the 2-position non-branched alkanals are reacted with formaldehyde under acid-base catalysis in the presence of secondary amines and carboxylic acids under laminar flow conditions.