• Title/Summary/Keyword: Thianthrene

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티안트렌 양이온 자유라디칼 과염소산염과 큐멘과산화수소의 반응 (Reaction of Thianthrene Cation Radical Perchlorate with Cumene Hydroperoxides)

  • 신종헌;김경태
    • 대한화학회지
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    • 제27권2호
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    • pp.142-149
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    • 1983
  • 아세토니트릴용액중의 티안트렌 양이온 라디칼 과염소산 염(1)은 Cumene hydroperoxide(4), p-chlorocumene hydroperoxide(2), p-nitrocumene hydroperoxide(3)와 상온에서 반응한다. 이 반응의 공통 생성물로서 티안트렌을 얻었으며 4로 부터 5-(4'-hydroxyphenyl) thianthrenium perchlorate (5), 2로부터 5-(5'-chloro-2'-hydroxyphenyl) thianthrenium perchlorate (7)와 5-acetonylthianthrenium perchlorate (6), 그리고 3으로부터 6만을 얻었다. 이 반응의 양관계는 1의 2몰이 티안트렌 1몰과 티안트렌이움 염(또는 염들) 1몰을 생성한다. 1에 대한 친핵성 활성도는 페놀 > > p-클로로페놀 ${\sim}$아세톤 > > p-니트로페놀 순서임이 밝혀졌다. Hydroperoxide의 산촉매 불균일 분해반응외에도 소량의 균일분해 반응생성물이 3과 4로부터 생성됨을 알았다.

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티안트렌 양이온 자유라디칼과 염소산염과 티오크잔틴의 반응. 티오크잔틴 유도체의 합성 (Reaction of Thianthrene Cation Radical Perchlorate with Thioxanthene. Synthesis of Thioxanthene Derivatives)

  • 김경태
    • 대한화학회지
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    • 제24권1호
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    • pp.34-43
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    • 1980
  • 아세토니트릴 용매에 녹은 티안트렌 양이온 자유라디칼 과염소산염과 티오크잔틴을 반응시키면 티안트렌과 티오크잔틴 양이온 라디칼 대신에 티오크잔틸이움 이온이 생성된다. 이 혼합물에 아니솔, 아닐린, N,N-디에틸아닐린, 카테콜, 에틸벤젠 등을 가해 줌으로서 각각 9위치에 치환기를 가진 티오크잔틴을 얻었다. 디벤조-18-크라운-6-에테르, 디페닐수은과 삼페닐포스핀과의 반응에서도 같은 유형의 생성물이 얻어진다. 그러나 전자받게를 가진 방향족 화합물과의 반응은 너무 느리거나 반응이 일어나지 않았다.

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Reactions of Thianthrene Cation Radical Perchlorate with N-(p-Methoxyphenyl)benzene- and Methanesulphonamides

  • Sung Hoon Kim;Jung Hyu Shin;Kyongtae Kim
    • Bulletin of the Korean Chemical Society
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    • 제10권6호
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    • pp.509-514
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    • 1989
  • Reactions of thianthrene cation radical perchlorate (1) with N-(p-methoxyphenyl)benzenesulphonamide (14) in acetonitrile at room temperature afforded various products : thianthrene (3), N-(p-hydroxyphenyl)benzenesulphonamide (16), benzenesulphonamide (18), hydroquinone (20); 5-(5-benzenesulphonamido-2-methoxyphenyl)-thia nthrenium perchlorate(21), 2-benzenesulphonamido-2'-hydroxy-5,5'-dimethoxy biphenyl(24), 2-benzenesulphonamido-2',5'-dihydroxy-5-methoxy -biphenyl(25), and a traceable amount of p-quinone(23). The formations of part of (3) and (21) can be explained by either disproportionation or half-regeneration mechanism but those of the remainders by diverse reactions of sulphonamidyl radical (27) derived from (14) (through single electron transfer, followed by deprotonation processes). Similar results were observed from the reaction with N-(p-methoxyphenyl)methanesulphonamide (15).

A Route for Sulfuranyl Radical by an Electron Transfer from Sodium Naphthalenide to a Triarylsulfonium Salt$^1$

  • Kim, Kyong-Tae;Bae, Hye-Kyung
    • Bulletin of the Korean Chemical Society
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    • 제8권3호
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    • pp.165-167
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    • 1987
  • Reaction of 5-(2-thianthreniumyl)thianthrene perchlorate with sodium naphthalenide in the presence of benzenethiol in tetrahydrofuran at -$78^{\circ}C$ proceeded via a formation of a sulfuranyl radical to give thianthrene (66%), 2-phenylthiothianthrene (33%), phenyl 2-(2-thianthrenylthio)phenyl sulfide (traceable amount), and some unknowns, along with naphthalene and very small amount of 1,4-dihydronaphthalene.

Photopolymerization of Vinyl Monomers Using Organic Initiators

  • Kim, Myoung-Hee;Lee, Jun;Cha, Hyo Chang;Ham, Heui-Suk;Woo, Hee-Gweon
    • 통합자연과학논문집
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    • 제2권1호
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    • pp.1-12
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    • 2009
  • This miniaccount presents the selective examples of our recent discoveries in the photopolymerization of vinyl monomers using the organic initiators such as hydrosilanes, poly(hydroarylsilane)s, benzoin silyl ethers, and thianthrene cation radical. In the photopolymerization of vinyl monomers with silanes polysilanes, while the polymerization yields and polymer molecular weights of the poly(MMA)s containing the silyl moieties decreased, the TGA residue yields and intensities of SiH stretching IR bands increased as the mole ratio of the silanes over MMA increased. The hydroarylsilane and poly(hydroarylsilane) seemed to influence strongly on the photopolymerizaiton of olefinic monomers as both chain initiation and chain transfer agents. For the photohomopolymerization and photocopolymerization of MA and AA, the similar trends were observed. Benzoin silyl ethers and thianthrene cation radical also exhibit the photoinitiating ability in the photopolymerization of MMA.

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