(α-Ethoxyvinyl)tributyltin acts as a masked acetylating agent in the palladium catalyzed reaction with various organic halides, such as aryl bromides, vinyl bromides, benzylchloride, and allyl chloride, giving, after hydrolysis of the resulting reaction mixture, good yields of the corresponding ketone product.
[EN] PROCESS FOR PREPARING PLATINUM ORGANOSILOXANE COMPLEXES USING AN ENONE ADDITIVE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE COMPLEXES DE PLATINE-ORGANOSILOXANE À L'AIDE D'UN ADDITIF D'ÉNONE
申请人:DOW SILICONES CORP
公开号:WO2019018461A1
公开(公告)日:2019-01-24
A platinum organosiloxane complex is prepared by a process including combining A) a platinous halide; B) a ketone; C) an enone additive distinct from any other starting materials or rearrangement products thereof; and D) a polyorganosiloxane having, per molecule, 2 to 4 silicon bonded terminally unsaturated hydrocarbon groups having from 2 to 6 carbon. The platinum organosiloxane complex prepared by the process is useful as a hydrosilylation catalyst.
Facile Photochemical Transformation of Alkyl Aryl Selenides to the Corresponding Carbonyl Compounds by Molecular Oxygen: Use of Selenides as Masked Carbonyl Groups
作者:Takeshi Hyugano、Suyou Liu、Akihiko Ouchi
DOI:10.1021/jo801730j
日期:2008.11.21
groups on the alkyl group were transformed efficiently into the corresponding carbonylcompounds, particularly primary alkyl aryl selenides in good yields, by a simple photolysis in the presence of air or oxygen. This transformation can be conducted without protection of functional groups. The yield of carbonylcompounds was much affected by the solvent viscosity, reaction temperature, concentration
A new catalytic aerobicoxidation of alcohols to aldehydes under green conditions was developed (room temperature and pressure, water solution, open vials). The water-soluble platinum(II) tetrasulfophthalocyanine (PtPcS) catalyst showed the best selectivity for carbonyl derivatives, and in particular for α,β-unsaturated alcohols; the reactions are slow.
The present invention concerns compound of formula (I) in the form of any one of its stereoisomers or as a mixture thereof, and wherein Q group represents a —CH=CH—CH3 group or a —C≡C—CH3 group. The use as a perfuming ingredient of the invention's compound and the invention's compound as part of a perfuming composition or of a perfuming consumer product are also part of the present invention.