OXIDATIVE DEPROTECTION OF TRIMETHYLSILYL ETHERS, TETRAHYDROPYRANYL ETHERS, AND ETHYLENE ACETALS WITH BENZYLTRIPHENYLPHOSPHONIUM PEROXYMONOSULFATE UNDER MICROWAVE IRRADIATION
作者:A. R. Hajipour、S. E. Mallakpour、I. M. Baltork、H. Adibi
DOI:10.1081/scc-100103980
日期:2001.1
This paper describes the oxidation deprotection of trimethylsilyl ethers, tetrahydrophyranyl ethers and deprotection of ethylene acetals to afford carbonyl compounds using benzyltriphenylphosphonium peroxymonosulfate (1) (PhCH2PPh3HSO5) in the presence of a catalytic amount of bismuth chloride under microwave irradiation. This reagent is a stable white powder, which has been prepared by the dropwise
A variety of acetals and thioacetals 2 are deprotected to the corresponding parent carbonyl compounds 3 under solvent-free conditions using benzyltriphenylphosphonium peroxymonosulfate (1) in the presence of aluminum chloride.
General and efficient palladium-catalyzed aminations of aryl chlorides
作者:Xiaohong Bei、Anil S. Guram、Howard W. Turner、W.Henry Weinberg
DOI:10.1016/s0040-4039(98)02597-0
日期:1999.2
Pd(dba)2/Ligand A catalyst efficiently catalyzes the aminations of a variety of arylchlorides with a variety of amines in high rates, selectivities, and isolated yields.
Method for the Manufacture of Substituted Phosphanes, and Substituted Phosphanes Manufactured According to Said Method
申请人:Thiel Werner
公开号:US20080221335A1
公开(公告)日:2008-09-11
The invention relates to a method for the manufacture of substituted phosphanes and substituted phosphanes manufactured according to the method. Phosphanes, phosphane oxides, sulfides or selenides are used as ligands in coordination compounds. They play a central role in controlling the activity and selectivity of catalysts. The object is achieved by the invention by synthesizing heterocyclic substituents on aromatic groups by introducing acetyl groups. In this manner, previously unknown representatives of the families of phosphanes, phosphane oxides, sulfides and selenides are made accessible.
It has now been found that certain novel bis(substituted phenyl)-1 [4-(saturated heterocyclyl-substituted)phenyl-methyl](4-piperidyl)}methane derivatives have provided unexpected insecticidal activity. These compounds are represented by formula (I); where R through R
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, m, n, s, A, B, D and W are defined herein. In addition, compositions comprising an insecticidally effective amount of at least one compound of formula (I), and optionally, an effective amount of at least one of a second compound, with at least one insecticidally compatible carrier are also disclosed; along with methods of controlling insects comprising applying said compositions to a locus where insects are present or are expected to be present.