Me<sub>2</sub>(CH<sub>2</sub>Cl)SiCN: Bifunctional Cyanating Reagent for the Synthesis of Tertiary Alcohols with a Chloromethyl Ketone Moiety via Ketone Cyanosilylation
作者:Xing-Ping Zeng、Jian Zhou
DOI:10.1021/jacs.6b05601
日期:2016.7.20
We report a novel bifunctional cyanating reagent, Me2(CH2Cl)SiCN, which paves the way to a one-pot sequential synthesis of tertiary alcohols featuring a chloromethyl ketone moiety via enantioselectiveketonecyanosilylation. This method contributes to gram-scale enantioselective total synthesis of the aggregation pheromone of the Colorado potato beetle, (S)-CPB.
[EN] INHIBITORS OF HEPATITIS C VIRUS RNA-DEPENDENT RNA POLYMERASE, AND COMPOSITIONS AND TREATMENTS USING THE SAME<br/>[FR] INHIBITEURS DE POLYMERASE D'ARN DEPENDANT D'ARN DU VIRUS DE L'HEPATITE C ET COMPOSITIONS ET TRAITEMENT UTILISANT CES INHIBITEURS
申请人:PFIZER
公开号:WO2006018725A1
公开(公告)日:2006-02-23
The present invention provides compounds of formula (4), and their pharmaceutically acceptable salts and solvates, which are useful as inhibitors of the Hepatitis C virus (HCV) polymerase enzyme and are also useful for the treatment of HCV infections in HCV-infected mammals. The present invention also provides pharmaceutical compositions comprising compounds of formula (4), their pharmaceutically acceptable salts and solvates. Furthermore, the present invention provides intermediate compounds and methods useful in the preparation of compounds of formula (4).
Synthesis of 2,4,6-trisubstituted pyridines via an olefin cross-metathesis/Heck–cyclisation–elimination sequence
作者:Timothy J. Donohoe、John F. Bower、David B. Baker、José A. Basutto、Louis K. M. Chan、Peter Gallagher
DOI:10.1039/c1cc14257g
日期:——
cross metathesis, to allow the instalment of substituents at the beta position. Subsequent one-pot cyclisation/elimination provides an operationally simple, catalytic and convergent synthesis of 2,4,6-trisubstitutedpyridines.
Boron Trifluoride Etherate Mediated 1,4-Addition of (1-Alkynyl)diisopropoxyboranes to α,β-Unsaturated Ketones. A Convenient New Route to 3-Alkynyl Ketone Synthesis
In the presence of BF3 etherate, (1-alkynyl)diisopropoxyboranes react with α,β-unsaturatedketones to give 1,4-addition products selectively in good yields.
Aluminum Chloride (Alcl<sub>3</sub>) Promotes Selective Oxidative Deprotection of Benzylic Trimethylsilyl and <i>Tert-</i> Butyldimethylsilyl Ethers to the Corresponding Carbonyl Compounds with Manganese Dioxide (Mno<sub>2</sub>)
Abstract Various types of trimethylsilyl and tert-butyldimethylsilyl ethers of primary and secondary benzylic alcohols could be selectively converted to their corresponding carbonylcompounds with MnO2 in the presence of AlCl3 in good to excellent yields.