Reactions of RMgX . THF complexes with 4-chloro-2-methyl-3-butyn-2-ol in aromatic hydrocarbons were studied. The complexes formed by arylmagnesium halides require the presence of anisole for the reaction to occur. 4-Chloro-2-methyl-3-butyn-2-ol can be synthesized by reaction of 2-methyl-3-butyn-2-ol with sodium hypochloride in the two-phase system water-benzene.
[EN] NAPHT- 2 -YLACETIC ACID DERIVATIVES TO TREAT AIDS<br/>[FR] DÉRIVÉS D'ACIDE NAPHT-2-YLACÉTIQUE DANS LE TRAITEMENT DU SIDA
申请人:GILEAD SCIENCES INC
公开号:WO2012003497A1
公开(公告)日:2012-01-05
The invention provides compounds of formula (I): or a salt thereof as described herein. The invention also provides pharmaceutical compositions comprising a compound of formula I, processes for preparing compounds of formula (I), intermediates useful for preparing compounds of formula I and therapeutic methods for treating the proliferation of the HIV virus, treating AIDS or delaying the onset of AIDS or ARC symptoms in a mammal using compounds of formula (I).
Rhodium‐Catalyzed Highly Regio‐ and Enantioselective Hydrogenation of Tetrasubstituted Allenyl Sulfones: An Efficient Access to Chiral Allylic Sulfones
A highlyregio‐ and enantioselective hydrogenation of challenging tetrasubstituted allenyl sulfones has been developed, affording chiral allylic sulfones in good yields with excellent regio‐ and enantioselectivities (up to 99 % yield and 99 % ee). This method provides an efficient and concise route to chiral allylic sulfones, thus offering an atom‐economic process with a wide range of potential applications
Gold-Catalyzed [4+2]- and [3+3]-Annulations of Ynamides with 1-Yn-3-ols to Access Six-Membered Carbocycles and Oxacycles <i>via</i>
Three Distinct Cyclizations
作者:Sovan Sundar Giri、Rai-Shung Liu
DOI:10.1002/adsc.201700784
日期:2017.10.4
and 1‐yn‐3‐ols are described; the resulting carbo‐ and heterocycles were produced efficiently in one‐pot operations using a gold catalyst. The chemoselectivities of these annulations are controlled by variations of the substituents of the ynamides and the 1‐yn‐3‐ols. This reaction sequence involves initial alkoxylations of ynamides, followed by Claisen rearrangement of propargylic enolethers, and ends
The copper-catalyzed reductive Ireland–Claisen rearrangement of propargylic acrylates led to 3,4-allenoic acids. The use of silanes or pinacolborane as stoichiometric reducing agents and triethylphosphite as a ligand facilitated the divergent and complementary selectivity for the synthesis of diastereomeric anti- and syn-rearranged products, respectively. Copper-catalyzed reductive Ireland–Claisen rearrangement
5-LIPOXYGENASE-ACTIVATING PROTEIN (FLAP) INHIBITORS
申请人:Hutchinson Howard John
公开号:US20070225285A1
公开(公告)日:2007-09-27
Described herein are compounds and pharmaceutical compositions containing such compounds, which modulate the activity of 5-lipoxygenase-activating protein (FLAP). Also described herein are methods of using such FLAP modulators, alone and in combination with other compounds, for treating respiratory, cardiovascular, and other leukotriene-dependent or leukotriene mediated conditions or diseases.