One-pot synthesis of benzoxazoles via the metal-free ortho-C–H functionalization of phenols with nitroalkanes
作者:Nicolai A. Aksenov、Alexander V. Aksenov、Oleg N. Nadein、Dmitrii A. Aksenov、Alexander N. Smirnov、Michael Rubin
DOI:10.1039/c5ra15128g
日期:——
PPA-activated nitroalkanes are employed in the design of a one-pot cascade transformation involvingortho-C–H functionalization, by Beckman rearrangement, and condensation to produce benzoxazoles and benzobisoxazoles directly from phenols.
An Efficient Synthesis of 2,6-Disubstituted Benzobisoxazoles: New Building Blocks for Organic Semiconductors
作者:Jared F. Mike、Andrew J. Makowski、Malika Jeffries-EL
DOI:10.1021/ol802011y
日期:2008.11.6
6-Disubstituted benzobisoxazoles have been synthesized by a highly efficient reaction of diaminobenzene diols with various orthoesters. The scope of this new reaction for the synthesis of substituted benzobisoxazoles has been investigated using four different orthoesters. The utility of these compounds as buildingblocks for the synthesis of conjugated polymers is demonstrated.
The present invention provides a resin composition having a high sensitivity and serving to produce a cured film with a low water absorption rate. The resin composition includes: (a) an alkali-soluble resin and (b1) an amido-phenol compound containing a phenolic hydroxyl group in which a monovalent group as represented by the undermentioned general formula (1) is located at the ortho position and/or (b2) an aromatic amido acid compound containing a carboxy group in which a monovalent group as represented by the undermentioned general formula (2) is located at the ortho position:
wherein in general formula (1), X is a monovalent organic group having an alkyl group that contains 2 to 20 carbon atoms and bonds directly to the carbonyl carbon in general formula (1) or a monovalent organic group that has —(YO)
n
—; and in general formula (2), U is a monovalent organic group that has an alkyl group containing 2 to 20 carbon atoms and bonding directly to the amide nitrogen in general formula (2) or a monovalent organic group that has —(YO)
n
—; wherein Y is an alkylene group containing 1 to 10 carbon atoms and n is an integer of 1 to 20.
CROSSLINKABLE SUBSTITUTED FLUORENE COMPOUNDS AND CONJUGATED OLIGOMERS OR POLYMERS BASED THEREON
申请人:INBASEKARAN Michael
公开号:US20110105711A1
公开(公告)日:2011-05-05
Crosslinkable substituted fluorine compounds; oligomers and polymers prepared from such crosslinkable compounds; films and coatings; and multilayer electronic devices comprising such films are disclosed.
COMPOSITES COMPRISING RIGID-ROD POLYMERS AND GRAPHENE NANOPARTICLES AND PROCESS FOR MAKING THE SAME
申请人:DANG Thuy D.
公开号:US20150218730A1
公开(公告)日:2015-08-06
The present invention relates to composites comprising rigid-rod polymers and graphene nanoparticles, processes for the preparation thereof, nanocomposite films and fibers comprising such composites and articles containing such nanocomposite films and fibers.