On the Role of CO2 in NHC-Catalyzed Oxidation of Aldehydes
摘要:
NHC-catalyzed oxidations using carbon dioxide as the stoichiometric oxidant have been carefully investigated. These studies support a secondary role of CO2 in suppressing side reactions and exogenous oxygen as the actual oxidant.
[EN] FUSED HETEROCYCLIC DERIVATIVES AND USE THEREOF<br/>[FR] DÉRIVÉS HÉTÉROCYCLIQUES FUSIONNÉS ET LEUR UTILISATION
申请人:TAKEDA PHARMACEUTICAL
公开号:WO2009136663A1
公开(公告)日:2009-11-12
The present invention provides a fused heterocyclic derivative having a strong kinase inhibitory activity and use thereof. The present invention relates to a compound represented by the formula wherein each symbol is as defined in the present specification, or a salt thereof.
[EN] NITROGEN-CONTAINING HETEROCYCLIC COMPOUND<br/>[FR] COMPOSÉ HÉTÉROCYCLIQUE CONTENANT DE L'AZOTE
申请人:TAKEDA PHARMACEUTICAL
公开号:WO2013018929A1
公开(公告)日:2013-02-07
The present invention provides a novel compound having a superior activity as an ERR-α modulator and useful as an agent for the prophylaxis or treatment of ERR-α associated diseases. The present invention relates to a compound represented by the formula (1) wherein each symbol is as defined in the specification, or a salt thereof.
One-Pot Synthesis of Less Accessible <i>N</i>-Boc-Propargylic Amines through BF<sub>3</sub>-Catalyzed Alkynylation and Allylation Using Boronic Esters
作者:Kento Yasumoto、Taichi Kano、Keiji Maruoka
DOI:10.1021/acs.orglett.9b00931
日期:2019.5.3
amines is described via an alkynylation or allylation of alkynyl-substituted N-Boc-imines. Our strategy relies on the BF3-mediated in situgeneration of alkynyl imines followed by alkynylation or allylation with the corresponding boronic esters. A range of lessaccessible N-Boc-propargylic amines were obtained in moderate to good yields under mild and acidic conditions with higher atom economy compared
Versatilite de reactivite de l`acetylene dicarbaldehyde et des aldehydes α-acetyleniques a l'egard des dienes conjugues cycliques et heterocycliques en milieu acide
作者:A. Gorgues、A. Simon、A. Le Coq、A. Hercouet、F. Corre
DOI:10.1016/s0040-4020(01)87436-6
日期:1986.1
of acetylenedicarbaldehyde and the corresponding mono acetal is described. A comparison of their reactivity with other α-acetylenic aldehydes R-CC-CHO to towards conjugated cydic or hetero- cydic dienes is presented. Under neutral conditions, the only expected Diels-Alder adducts are formed. Under acidic conditions (HCO2H, CF3,CO2H or eventually AcOH) they afford the only Diel-Alder adduct when the
Platinum-Catalyzed Hydrosilylations of Internal Alkynes: Harnessing Substituent Effects to Achieve High Regioselectivity
作者:Douglas A. Rooke、Eric M. Ferreira
DOI:10.1002/anie.201108714
日期:2012.3.26
Rule of thumb: The high yielding title reaction is described with a focus on understanding the factors that govern the regioselectivity of the process (see scheme). Electronic, steric, and functional group properties all influence the selectivity, an understanding of which allows the selective formation of trisubstituted vinylsilanes, which are synthetically useful compounds for accessing stereodefined