Generation of Organozinc Reagents from Arylsulfonium Salts Using a Nickel Catalyst and Zinc Dust
作者:Kodai Yamada、Tomoyuki Yanagi、Hideki Yorimitsu
DOI:10.1021/acs.orglett.0c03782
日期:2020.12.18
powder under nickel catalysis via the selective cleavage of the sp2-hybridized carbon–sulfur bond to produce salt-free arylzinc triflates undermildconditions. This zincation displays superb chemoselectivity and thus represents a protocol that is complementary or orthogonal to existing methods. The generated arylzincreagents show both high reactivity and chemoselectivity in palladium-catalyzed and copper-mediated
α‐Arylation, α‐Arylative Esterification, or Acylation: A Stoichiometry‐Dependent Trichotomy in the Pd‐Catalyzed Cross‐Coupling between Aldehydes and Aryl Bromides
作者:Pradeep Nareddy、Clément Mazet
DOI:10.1002/asia.201300724
日期:2013.11
Three′s company: The selective α‐arylation and α‐arylativeesterification of linear and branched aldehydes is reported for a variety of bromoarenes. The acylation of arylbromides can be achieved with linear aldehydes (see scheme). All these transformations were performed with a single [(N‐heterocyclic carbene)Pd] catalyst through adjustment of the stoichiometry of the reagents and the appropriate
A salt suitable for an acid generator and a chemically amplified resist composition containing the same
申请人:Sumitomo Chemical Company, Limited
公开号:EP1873143A1
公开(公告)日:2008-01-02
The present invention provides a salt of the formula (L)
wherein Q represents -CO- group or -C(OH)- group; ring X represents monocyclic or polycyclic hydrocarbon group having 3 to 30 carbon atoms in which a hydrogen atom is substituted by a hydroxyl group at Q position when Q is -C(OH)- group or in which two hydrogen atoms are substituted by =O group at Q position when Q is -CO- group, and at least one hydrogen atom in the monocyclic or polycyclic hydrocarbon group may optionally be substituted by an alkyl group having 1 to 6 carbon atoms, alkoxy group having 1 to 6 carbon atoms, perfluoroalkyl group having 1 to 4 carbon atoms, hydroxyalkyl group having 1 to 6 carbon atoms, hydroxyl group or cyano group; R10 and R20 each independently represent fluorine atom or perfluoroalkyl group having 1 to 6 carbon atoms; and A+ represents organic counter ion.
The present invention also provides a chemically amplified resist composition comprising the salt of the formula (L).
Iron Catalyst for Oxidation in Water: Surfactant-type Iron Complex-catalyzed Mild and Efficient Oxidation of Aryl Alkanes Using Aqueous TBHP as Oxidant in Water
作者:Takashi Nagano、Shu Kobayashi
DOI:10.1246/cl.2008.1042
日期:2008.10.5
Surfactant-type iron(III) complex, Fe 2 O(DS) 4 , was found to be effective for benzylic oxidation of simple aryl alkanes using aqueous t-butyl hydroperoxide (TBHP) as an oxidant.
发现表面活性剂型铁 (III) 配合物 Fe 2 O(DS) 4 可有效用于使用叔丁基氢过氧化物 (TBHP) 作为氧化剂的简单芳基烷烃的苄基氧化。