Synthesis of N-propargylanabasine derivatives by the mannich reaction
作者:M. V. Mavrov、S. G. Zlotin
DOI:10.1007/s11172-007-0256-0
日期:2007.8
N-Propargylanabasine derivatives bearing various substituents at the carbon atom of the alkyne fragment were obtained by the reaction of anabasine hydrochloride with terminal alkynes and paraformaldehyde. The reaction proceeded with retention of the C(2) chiral center in anabasine fragment. The by-products of the reaction, including 1,3-diacetylene (the products of dimerization of alkynes) and conjugated
Ti/Cu and Ti/Ag catalysts for the isomerisation of α-acetylenic alcohols into α,β-ethylenic carbonyl derivatives
作者:Pierre Chabardes
DOI:10.1016/s0040-4039(00)82318-7
日期:1988.1
New titanium and copper (or silver) based catalysts allow efficiently the isomerisation of α-acetylenic alcohols into α,β-ethylenic carbonyl derivatives.
The Rearrangement of ?-Acetylenic Alcohols to ?, ?-Unsaturated Carbonyl Compounds by Silylvanadate Catalysts
作者:Horst Pauling、David Arthur Andrews、Nathan Chadwick Hindley
DOI:10.1002/hlca.19760590426
日期:1976.6.2
New catalytic systems have been found which effect the isomerization of α-acetylenic alcohols to the corresponding α, β-unsaturated carbonylcompounds with high efficiency. These are combinations of silylvanadates with silanols or silanediols.
The present invention relates to the use of specific organic compounds as flavor and fragrance material. Furthermore the invention relates to new specific organic compounds and their synthesis, as well to flavor and fragrance formulations comprising at least one of the specific organic compounds.
The present invention relates to the use of specific organic compounds as flavor and fragrance material. Furthermore the invention relates to new specific organic compounds, as well as to flavor and fragrance formulations comprising at least one of the specific organic compounds.