Silver Triflate Catalyzed Acetylation of Alcohols, Thiols, Phenols, and Amines
作者:Debashis Chakraborty、Rima Das
DOI:10.1055/s-0030-1259999
日期:2011.5
variety of alcohols, thiols, phenols, and amines were subjected to acetylation reaction using acetic anhydride in the presence of catalytic quantity of silver triflate. The method described has a wide range of applications, proceeds under mild conditions, does not involve cumbersome workup, and the resulting products are obtained in high yields within a reasonable time. acetylation - silver triflate -
Catalytic Reductive <i>ortho</i>-C–H Silylation of Phenols with Traceless, Versatile Acetal Directing Groups and Synthetic Applications of Dioxasilines
and the use of traceless acetal directing groups, has been employed to provide facile formation of C-Si bonds and concomitant functionalization of a silicon group in a single vessel. Specifically, this approach involves the relay of Ir-catalyzed hydrosilylation of inexpensive and readily available phenyl acetates, exploiting disubstituted silyl synthons to afford silyl acetals and Rh-catalyzed ortho-C-H
[EN] HETEROCYCLYL POLYMETHINE IR CHROMOPHORES<br/>[FR] CHROMOPHORES IR À BASE DE POLYMÉTHINE HÉTÉROCYCLYLE
申请人:UNIV CALIFORNIA
公开号:WO2020118116A1
公开(公告)日:2020-06-11
The present disclosure provides NIR- and SWIR-active small molecule polymethine dyes with improved properties for use in optical imaging, photothermal therapy, and photodynamic therapy.
A general and efficient method for the tertiary amide synthesis has been developed via copper-catalyzed aerobicoxidative amidation of tertiaryamines. Due to the use of O2 oxidant, various functional...
practical synthesis of arylsulfonamides from electron-rich aromatic compounds by using in situ generated N-sulfonylamine as the active electrophile. Substrates include derivatives of aniline, indole, pyrrole, furan, styrene and so on. The reaction proceeds under mild conditions and tolerates many sensitive functional groups such as alkyne, acetate, the trifluoromethoxy group or acetoxymethyl ester. Applications