associative covalentrelay process operates in rhodium(III)‐catalyzed oxadiazolone‐directed alkenyl C−H coupling with alkynes and allows efficient access to primarypyridinylamines. Although the primarypyridinylaminesynthesis mechanism is posteriori rationalized, the relay formalism formulated herein can provide an important mechanistic conceptual framework for future catalyst design and reaction development
Living and Alternating Cationic Copolymerization of <i>o</i>-Phthalaldehyde and Various Bulky Enol Ethers: Elucidation of the “Limit” of Polymerizable Monomers
Cationiccopolymerization of various bulky enol ethers, which have been difficult to homopolymerize and/or copolymerize, was shown to proceed when o-phthalaldehyde (OPA) was used as a comonomer. A series of enol ethers with various substituents on the β-carbon was synthesized from aliphatic aldehydes and alcohols. The relationships between the structures of the enol ethers and the copolymerization
Temperature and matrix effects on competitive intermolecular and intramolecular reaction of benzylchlorocarbenes in ethanol
作者:Hideo Tomioka、Norihiro Hayashi、Yasuji Izawa、Michael T.H. Liu
DOI:10.1016/s0040-4039(01)81453-2
日期:1984.1
Benzylchlorocarbenes generated photolytically from diazirines in EtOH afford chlorostyrenes and acetals, whose distributions are sensitive to the reaction temperature.
Synthesis of acetals from alkenes by one-pot hydroformylation-transacetalization reactions catalysed by rhodium complexes and pyridinium p-toluenesulphonate
作者:Elena Fernández、Sergio Castillón
DOI:10.1016/0040-4039(94)85220-0
日期:1994.4
Efficient conversion of alkenes to acetals has been achieved by consecutive hydroformylation-acetalization reactions catalyzed by rhodiumcomplexes and pyridiniump-toluenesulphonate or by a zwitterionic rhodium catalyst.
Derivative of 2-cyclohexylpropanal and perfumery composition comprising the same
申请人:KAO CORPORATION
公开号:EP0358091A2
公开(公告)日:1990-03-14
2-Cyclohexylpropanal derivatives are disclosed. The derivatives are represented by the following formula (I):
wherein P is a hydrogen atom and Q represents a group -CH=N-OH or a group -CH(OR)₂, wherein each R represents a lower alkyl group or two R's together form a lower alkylene group which may have a lower alkyl substituent, or P and Q together form a group
wherein R′ is a lower alkyl group.
The compounds possess floral, fruity, or green odors and are useful for prepering perfume compositions.
公开了 2-环己基丙醛衍生物。这些衍生物由下式(I)表示:
其中 P 是氢原子,Q 代表一个基团-CH=N-OH 或一个基团-CH(OR)₂,其中每个 R 代表一个低级烷基或两个 R 共同形成一个低级亚烷基,该亚烷基可能具有一个低级烷基取代基,或 P 和 Q 共同形成一个基团
其中 R′为低级烷基。
这些化合物具有花香、果香或绿色气味,可用于香水组合物的预处理。