Metal-Free Borylation of Heteroarenes Using Ambiphilic Aminoboranes: On the Importance of Sterics in Frustrated Lewis Pair C–H Bond Activation
作者:Julien Légaré Lavergne、Arumugam Jayaraman、Luis C. Misal Castro、Étienne Rochette、Frédéric-Georges Fontaine
DOI:10.1021/jacs.7b08143
日期:2017.10.18
were synthesized, and their structural features were elucidated both in solution and in the solid state. The reactivity of these species for the borylation of heteroarenes was investigated and compared to previously reported (1-TMP-2-BH2-C6H4)2 (1; TMP = tetramethylpiperidyl) and (1-NMe2-2-BH2-C6H4)2 (4; NMe2 = dimethylamino). It was shown that 2 and 3 are more active catalysts for the borylation
The present invention provides compounds of the formula:
or pharmaceutically acceptable salts, solvates or prodrugs thereof, wherein p, Ar, R
1
, R
2
, R
3
, R
a
, R
b
, R
c
, R
d
and R
e
are defined herein. Also provided are pharmaceutical compositions, methods of using, and methods of preparing the compounds.
PRECATALYSTS AND PROCESS FOR THE METAL-FREE FUNCTIONALIZATION OF SP2 CARBONS USING THE SAME
申请人:UNIVERSITÉ LAVAL
公开号:US20180280950A1
公开(公告)日:2018-10-04
Precatalysts of formula I and IV, and processes for the functionalization of SP2-carbons using the same are described herein. The precatalysts comprise a fluoroborate salt protected intramolecular frustrated lewis pair (FLP). The precatalysts are bench stable with improved stability towards moisture and/or air. The precatalysts can be used to generate in situ the corresponding FLP catalyst.
The coupling reaction of a D-ribofuranosyl fluoride with indoles in the presence of boron trifluoride gives the corresponding C-nucleosides in a stereoselective manner depending upon reaction temperatures and solvents: the β-anomer is preferred under such conditions as –15 to –40 °C in nitroethane while the α-anomer is preferred at –78 °C in propiononitrile.
2-Aminopyrimidine derivatives and their medical use
申请人:Bollbuck Birgit
公开号:US20070043048A1
公开(公告)日:2007-02-22
A compound of formula I or a pharmaceutically acceptable salt, ester or prodrug thereof wherein the variables have the meanings as defined in the specification. Further disclosed are a method of inhibiting IKK activity using a compound of formula I, a method of inhibiting production of TNF using a compound of formula I, a compound of formula I for use as a pharmaceutical, a pharmaceutical composition comprising a compound of formula I, and use of a compound of formula I in the manufacture of a medicament for use as an immunosuppressant or anti-inflammatory agent.