ORGANIC SEMICONDUCTING MATERIAL AND ITS SYNTHESIS AND ORGANIC SEMICONDUCTING COMPONENT WITH THE MATERIAL
申请人:Heliatek GmbH
公开号:US20200071343A1
公开(公告)日:2020-03-05
New absorbing materials of formula (I) for use in organic semiconducting components:
用于有机半导体组件的新吸收材料的化学式(I):
Stille couplings in water at room temperature
作者:Guo-ping Lu、Chun Cai、Bruce H. Lipshutz
DOI:10.1039/c2gc36042j
日期:——
A nonionic amphiphile, TPGS-750-M, enables efficient Stille couplings between a wide range of substrates to be conducted in water as the only medium, in most cases at room temperature.
tandem cycloaddition reactions with high stereoselectivity. The reaction of bisfurans with dimethyl acetylenedicarboxylate (DMAD) involves tandem [4 + 2]/[4 + 2] cycloadditions in a pincer mode. The reaction of oligofurans with arynes involves stereoselective tandem [4 + 2]/[4 + 2] cycloaddition reactions in a domino mode. The corresponding aryne adducts have been transformed into extended perylene derivatives
gel-promoted synthesis of 2-bromo-3-hydroxybenzoate derivatives has been developed via the Diels–Alder reaction of furans with methyl 3-bromopropiolate, followed by a ring-opening aromatization. In addition, 2-bromo-3-methoxybenzoate, derived from 2-bromo-3-hydroxybenzoate with iodomethane, was found to be a good substrate for Pd-catalyzed cross-coupling reactions, despite its sterically hindered structure
Slow Release of Organoboronic Acids in Cross-Coupling Reactions
申请人:Burke Martin D.
公开号:US20100121062A1
公开(公告)日:2010-05-13
A method of performing a chemical reaction includes reacting a compound selected from the group consisting of an organohalide and an organo-pseudohalide, and a protected organoboronic acid represented by formula (I) in a reaction mixture:
R
1
—B-T (I);
where R
1
represents an organic group, T represents a conformationally rigid protecting group, and B represents boron having sp
3
hybridization. When unprotected, the corresponding organoboronic acid is unstable by the boronic acid neat stability test. The reaction mixture further includes a base having a pK
B
of at least 1 and a palladium catalyst. The method further includes forming a cross-coupled product in the reaction mixture.