- SALT AND PHOTORESIST COMPOSITION
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PROBLEM TO BE SOLVED: To provide a salt in which a focus margin (DOF) and a mask error factor (MEF) of a pattern which is acquired are favorable, and to provide a resist composition containing the salt.SOLUTION: The salt is shown by formula (I), and the resist composition contains the salt. In the formula, Rand Reach denote a hydroxy group or an alkyl group, wherein a methylene group in the alkyl group may be replaced with an oxy group or the like; Rdenotes an alkyl group; l, m and n each denote an integer of 0-3; p denotes an integer of 1-3; a methylene group of a heterocyclic ring containing a sulfonium cation may be replaced with an oxy group or carbonyl group; Rand Reach denote a fluorine atom or a perfluoroalkyl group; Ldenotes a divalent saturated hydrocarbon group, wherein a methylene group in the group may be replaced with an oxy group or a carbonyl group; and Y denotes an aliphatic hydrocarbon group or a saturated cyclic hydrocarbon group, wherein a methylene group in the groups may be replaced with an oxy group or the like.
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Paragraph 0390-0392; 0406-0408
(2018/06/01)
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- MCM-41-immobilized 1,10-phenanthroline-copper(i) complex: A highly efficient and recyclable catalyst for the coupling of aryl iodides with aliphatic alcohols
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A heterogeneous C-O coupling reaction between aryl iodides and aliphatic alcohols was achieved in neat alcohol or toluene at 110 °C in the presence of 10 mol% of the MCM-41-immobilized 1,10-phenanthroline-copper(i) complex [MCM-41-1,10-phen-CuI] with Cs2CO3 as a base, yielding a variety of aryl alkyl ethers in good to excellent yields. The new heterogeneous copper catalyst can easily be prepared by a simple procedure from commercially available and inexpensive reagents, and recovered by filtration of the reaction solution and recycled at least 8 times without significant loss of activity.
- Lin, Yang,Cai, Mingzhong,Fang, Zhiqiang,Zhao, Hong
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p. 85186 - 85193
(2016/10/12)
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- The Use of Ureates as Activators for Samarium Diiodide
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A novel mode of SmI2 activation has been developed using ureates as reaction promoters. Several ureates formed by treatment of the corresponding ureas with n-BuLi have been shown to activate SmI2 to a substantial extent toward the reduction of 1-chlorodecane. Complexes formed from SmI2 and various ureates have been shown to be useful for the reduction of a variety of organohalides, including substrates of low reactivity such as aryl fluorides. Because of ease of synthesis and low molecular weight, the conjugate base of triethylurea (TEU-) was of primary focus. Visible spectroscopy and reactivity data are consistent with the hypothesis that the same complex is being formed when SmI2 is combined with either 2 or 4 equiv of TEU-, in spite of the greater reactivity of SmI2/4 TEU- with some alkyl halides. We propose that the active reductant is an N,O chelate formed between SmI2 and 2 equiv of TEU-.
- McDonald, Chriss E.,Ramsey, Jeremy D.,McAtee, Christopher C.,Mauck, Joseph R.,Hale, Erin M.,Cumens, Justin A.
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p. 5903 - 5914
(2016/07/23)
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- SALT, RESIST COMPOSITION, AND PRODUCTION METHOD OF RESIST PATTERN
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PROBLEM TO BE SOLVED: To provide a resist composition containing a salt, from which a resist pattern with good CD uniformity (CDU) can be produced. SOLUTION: The resist composition comprises a salt represented by formula (I) and a resin having an acid-lab
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Paragraph 0300; 0301
(2017/12/01)
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- Microwave-Assisted solid-liquid phase alkylation of naphthols
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The microwave promoted alkylation of 1- and 2-naphthols with benzyl, butyl, ethyl and isopropyl halides in the presence of an alkali carbonate may result in O- and C-Alkylated products. The alkylations were O-selective in the presence of K2CO3 in acetonitrile as the solvent and in the absence of phase transfer catalyst. The alkylations utilizing butyl and ethyl halides were also O-selective in solventless accomplishment and in the presence of triethylbenzylammonium chloride.
- Balint, Erika,Kovacs, Orsolya,Drahos, Laszlo,Keglevich, Gyoergy
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p. 330 - 336
(2013/07/26)
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- Dipyrrolidinomethylaminophosphoric acid triamide (DPMPA) as an activator for the samarium diiodide-mediated reduction of alkyl and aryl halides
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The use of the conjugate base of dipyrrolidinomethylaminophosphoric triamide (DPMPA-) as an activator of samarium diiodide is reported. This phosphoramidate has been shown to be a very potent ligand, allowing for the efficient, low-temperature reduction of alkyl and aryl chlorides. Reductive cyclizations of haloalkenylnaphthalenes are also reported.
- McDonald, Chriss E.,Ramsey, Jeremy R.,Sampsell, David G.,Anderson, Laura A.,Krebs, Jordan E.,Smith, Samantha N.
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p. 2947 - 2953
(2013/04/23)
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- A single phosphine ligand allows palladium-catalyzed intermolecular C-O bond formation with secondary and primary alcohols
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Forging a bond: An efficient, general palladium catalyst for C-O bond-forming reactions of secondary and primary alcohols with a range of aryl halides has been developed using the ligand 1. Heteroaryl halides, and for the first time, electron-rich aryl halides can be coupled with secondary alcohols. A diverse set of substrate combinations are possible with just a single ligand, thus obviating the need to survey multiple ligands. Copyright
- Wu, Xiaoxing,Fors, Brett P.,Buchwald, Stephen L.
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supporting information; experimental part
p. 9943 - 9947
(2011/12/05)
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- O-Alkylation of phenol derivatives via a nucleophilic substitution
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The alkylation of phenol derivatives can be achieved in good yield via Lewis or Bronsted acid. The only by-product of the reaction is water and the catalyst can be recycled when using Bronsted acid.
- Cazorla, Clement,Pfordt, Emilie,Duclos, Marie-Christine,Metay, Estelle,Lemaire, Marc
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experimental part
p. 2482 - 2488
(2011/10/31)
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- A general and efficient catalyst for palladium-catalyzed C-O coupling reactions of aryl halides with primary alcohols
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An efficient procedure for palladium-catalyzed coupling reactions of (hetero)aryl bromides and chlorides with primary aliphatic alcohols has been developed. Key to the success is the synthesis and exploitation of the novel bulky di-1-adamantyl-substituted bipyrazolylphosphine ligand L6. Reaction of aryl halides including activated, nonactivated, and (hetero)aryl bromides as well as aryl chlorides with primary alcohols gave the corresponding alkyl aryl ethers in high yield. Noteworthy, functionalizations of primary alcohols in the presence of secondary and tertiary alcohols proceed with excellent regioselectivity.
- Gowrisankar, Saravanan,Sergeev, Alexey G.,Anbarasan, Pazhamalai,Spannenberg, Anke,Neumann, Helfried,Beller, Matthias
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supporting information; experimental part
p. 11592 - 11598
(2010/10/02)
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- One-pot synthesis of 4-alkoxybenzo[c]thiophenes
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The reaction of N-bromosuccinimide with 4,5,6,7-tetrahydrobenzo[c]thiophen-4-ones in the presence of 2,2′-azo-bis-isobutyronitrile followed by heating under reflux with different alcohols produces 4-alkoxybenzo[c]thiophenes in good yield.
- Akbarzadeh, Tahmineh,Shafiee, Abbas
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p. 1455 - 1462
(2007/10/03)
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