Room-Temperature Arylation of Arenes and Heteroarenes with Diaryliodonium Salts by Photoredox Catalysis
摘要:
Aryl radicals produced by irradiation of diaryliodonium salts with visible light under the catalysis of [Ru(bpy)(3)](2+) undergo coupling with a wide range of arenes and heteroarenes, affording various biaryls through direct C-H arylation at room temperature.
Palladium Catalyzed Regioselective Cyclization of Arylcarboxylic Acids via Radical Intermediates with Diaryliodonium Salts
作者:Guoqiang An、Limin Wang、Jianwei Han
DOI:10.1021/acs.orglett.1c03016
日期:2021.11.19
Palladium-catalyzed C2-arylation/intramolecular acylation with arylcarboxylic acids was developed by using diaryliodonium salts. The protocol has the advantage of good step-economy by two chemical bonds formation in one pot.
通过使用二芳基碘鎓盐开发了钯催化的 C 2 -芳基化/与芳基羧酸的分子内酰化。该协议的优点是在一锅中形成两个化学键,具有良好的阶梯经济性。
Construction of 2,3-quaternary fused indolines from alkynyl tethered oximes and diaryliodonium salts through a cascade strategy of <i>N</i>-arylation/cycloaddition/[3,3]-rearrangement
作者:Xiao-Pan Ma、Kun Li、Si-Yi Wu、Cui Liang、Gui-Fa Su、Dong-Liang Mo
DOI:10.1039/c7gc02844j
日期:——
A variety of 2,3-quaternary fused indolines could be prepared in good yields with high diastereoselectivity from alkynyl tethered oximes and diaryliodonium salts under mild metal-free conditions. The reaction initially goes through a selective N-arylation to provide alkynyl tethered nitrones and regioselectively undergoes an intramolecular (3 + 2) cycloaddition followed by a [3,3]-sigmatropic rearrangement
Novel carbazole derivative and chemically amplified radiation-sensitive resin composition
申请人:——
公开号:US20020172885A1
公开(公告)日:2002-11-21
A carbazole derivative of the following formula (1),
1
wherein R
1
and R
2
individually represent a hydrogen atom or a monovalent organic group, or R
1
and R
2
form, together with the carbon atom to which R
1
and R
2
bond, a divalent organic group having a 3-8 member carbocyclic structure or a 3-8 member heterocyclic structure, and R
3
represents a hydrogen atom or a monovalent organic group. The carbazole derivative is suitable as an additive for increasing sensitivity of a chemically amplified resist. A chemically amplified radiation-sensitive resin composition, useful as a chemically amplified resist, comprising the carbazole derivative is also disclosed.
Novel anthracene derivative and radiation-sensitive resin composition
申请人:——
公开号:US20030194634A1
公开(公告)日:2003-10-16
A novel anthracene derivative useful as an additive to a radiation-sensitive resin composition is disclosed. The anthracene derivative has the following formula (1),
1
wherein R
1
groups individually represent a hydroxyl group or a monovalent organic group having 1-20 carbon atoms, n is an integer of 0-9, X is a single bond or a divalent organic group having 1-12 carbon atoms, and R
2
represents a monovalent acid-dissociable group. The radiation-sensitive resin composition comprises the anthracene derivative of the formula (1), a resin insoluble or scarcely soluble in alkali, but becomes alkali soluble in the presence of an acid, and a photoacid generator. The composition is useful as a chemically-amplified resist for microfabrication utilizing deep ultraviolet rays, typified by a KrF excimer laser and ArF excimer laser.
A novel photoacid generator containing a structure of the following formula (I),
1
wherein R is a monovalent organic group with a fluorine content of 50 wt % or less, a nitro group, a cyano group, or a hydrogen atom, and Z
1
and Z
2
are individually a fluorine atom or a linear or branched perfluoroalkyl group having 1-10 carbon atoms, is provided. When used in a chemically amplified radiation-sensitive resin composition, the photoacid generator exhibits high transparency, comparatively high combustibility, and no bioaccumulation, and produces an acid exhibiting high acidity, high boiling point, moderately short diffusion length in the resist coating, and low dependency to mask pattern density.