甲酰基-1,4-苯醌,1,4-苯醌基乙醛,3-(1,4-苯醌基)丙醛,2-(1,4-苯醌基)-2-甲基丙醛和2-甲基-2-(1)的制备描述了(4-萘醌-2-基)丙醛。用可见光照射这些苯醌在苯中的溶液导致将2,5-二羟基苯甲酸从甲酰基-1,4-苯醌中分离出来,并形成5-羟基香豆素-2-酮和3,4-二氢-接下来的两个醌中的6-羟基香豆素;该系列中的最后两个醌失去甲醛元素,分别生成5-羟基-3-甲基苯并呋喃和5-羟基-3-甲基萘-[1,2- b ]呋喃。没有任何辐射进行得很干净。
Cross-metathesis reaction of functionalized and substituted olefins using group 8 transition metal carbene complexes as metathesis catalysts
申请人:CALIFORNIA INSTITUTE OF TECHNOLOGY
公开号:US09403854B2
公开(公告)日:2016-08-02
The invention pertains to the use of Group 8 transition metal carbene complexes as catalysts for olefin cross-metathesis reactions. In particular, ruthenium and osmium alkylidene complexes substituted with an N-heterocyclic carbene ligand are used to catalyze cross-metathesis reactions to provide a variety of substituted and functionalized olefins, including phosphonate-substituted olefins, directly halogenated olefins, 1,1,2-trisubstituted olefins, and quaternary allylic olefins. The invention further provides a method for creating functional diversity using the aforementioned complexes to catalyze cross-metathesis reactions of a first olefinic reactant, which may or may not be substituted with a functional group, with each of a plurality of different olefinic reactants, which may or may not be substituted with functional groups, to give a plurality of structurally distinct olefinic products. The methodology of the invention is also useful in facilitating the stereoselective synthesis of 1,2-disubstituted olefins in the cis configuration.
A recyclable CO surrogate in regioselective alkoxycarbonylation of alkenes: indirect use of carbon dioxide
作者:P. H. Gehrtz、V. Hirschbeck、I. Fleischer
DOI:10.1039/c5cc05012j
日期:——
Herein, we report a Pd-catalysed alkoxycarbonylation of alkenes based on the use of a recyclable CO2reduction product, the crystalline and air-stableN-formylsaccharin, as a CO surrogate.
Salt suitable for an acid generator and a chemically amplified resist composition containing the same
申请人:Harada Yukako
公开号:US20070078269A1
公开(公告)日:2007-04-05
The present invention provides a salt of the formula (I):
wherein ring Y represents monocyclic or polycyclic hydrocarbon group having 3 to 30 carbon atoms, in which one —CH
2
— group is substituted with —COO— group, and at least one hydrogen atom in the monocyclic or polycyclic hydrocarbon group may optionally be substituted with alkyl group having 1 to 6 carbon atom, alkoxy group having 1 to 6 carbon atom, perfluoroalkyl group having 1 to 4 carbon atoms, hydroxyalkyl group having 1 to 6 carbon atoms, hydroxyl group or cyano group; Q
1
and Q
2
each independently represent fluorine atom or perfluoroalkyl group having 1 to 6 carbon atoms; A
+
represents organic counter ion; and n shows an integer of 0 to 12.
The present invention also provides a chemically amplified resist composition comprising the salt of the formula (I).
[EN] LIGHT HARVESTING ARRAY<br/>[FR] RÉSEAU COLLECTEUR DE LUMIÈRE
申请人:FLUROSOL IND PTY LTD
公开号:WO2015024064A1
公开(公告)日:2015-02-26
The invention relates to a light harvesting array or dye comprising an acceptor linked to a donor, wherein at least one of the acceptor or the donor is an oligomeric unit comprising a first optionally substituted rylene linked via a linker group to a second optionally substituted rylene, the first optionally substituted rylene is linked to the acceptor or the donor and the second optionally substituted rylene is capable of energy transfer to at least one of the first optionally substituted rylene, the acceptor or the donor. The invention also relates to compounds which may be used as light harvesting arrays, methods for their manufacture, and devices and materials comprising the light harvesting array or dye, for example, chromophoric materials, light guides, photobioreactors, photoluminescent algae systems, photodetectors, photovoltaic devices and luminescent/fluorescent solar concentrators.
Photocatalytic intermolecular carboarylation of alkenes by selective C–O bond cleavage of diarylethers
作者:Meishan Ji、Chenyang Chang、Xinxin Wu、Chen Zhu
DOI:10.1039/d1cc04038c
日期:——
Disclosed herein is a novel radical-mediated intermolecular carboarylation of alkenes by cleaving inert C–O bonds. The strategically designed arylbenzothiazolylether diazonium salts are harnessed as dual-function reagents. A vast array of alkenes are proven to be suitable substrates. The benzothiazolyl moiety in the products serves as the formyl precursor, and the OH residue provides the cross-coupling