Copper(i)-catalyzed amidation reaction of organoboronic esters and isocyanates
A simple and efficient methodology for the preparation of amides from easily available organoboronic esters and isocyanates has been accomplished using a ligand-free copper(i) catalyst. The reaction system demonstrated a broad substrate scope and provided convenient access to a wide variety of secondary amides.
Generation of organolithium compounds bearing super silyl ester and their application to Matteson rearrangement
It's super-silyl-fragilithyl-ester-aryl-docious: The super silyl group is a strong protecting group for carboxylic acids and provides a method for direct lithiation that is compatible with the ester moiety. Organolithium compounds bearing a super silyl ester react with a variety of electrophiles in high yields (see scheme). The reaction of lithiated super silyl chloroacetate with a boron compound gives α-functionalization of the ester moiety by Matteson rearrangement. Copyright
Oda, Susumu,Yamamoto, Hisashi
supporting information
p. 8165 - 8168
(2013/08/23)
Ruthenium(0)-catalyzed sp3 C-H bond arylation of benzylic amines using arylboronates
A Ru-catalyzed direct arylation of benzylic sp3 carbons of acyclic amines with arylboronates is reported. This highly regioselective and efficient transformation can be performed with various combinations of N-(2-pyridyl) substituted benzylamines and arylboronates. Substitution of the pyridine directing group in the 3-position proved to be crucial in order to achieve high arylation yields. Furthermore, the pyridine directing group can be removed in high yields via a two-step protocol.
Dastbaravardeh, Navid,Schnuerch, Michael,Mihovilovic, Marko D.
supporting information; experimental part
p. 1930 - 1933
(2012/05/31)
Boronic acid based photoinduced electron transfer (PET) fluorescence sensors for saccharides
A simple three step synthesis was developed to provide six novel modular sensors, consisting of three para sensors, and three meta sensors with naphthalene, anthracene and pyrene fluorophores. The interaction of the six sensors with the saccharides: d-glu
Larkin, Joseph D.,Frimat, Karine A.,Fyles, Thomas M.,Flower, Stephen E.,James, Tony D.
supporting information; experimental part
p. 2922 - 2931
(2011/02/27)
Preparation process for beta-alkoxy acrylic acid
A method for prerparing compounds of formula (I), wherein R is an optionally substituted alkenyl or alkynyl radical having up to 8 carbon atoms, or an optionally substituted mono- or polycyclic aryl or heteroaryl radical, and R1 and R2/su
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(2008/06/13)
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