SYNTHESIS AND PROPERTIES OF S-AMINOTHIRANIUM SALTS OF anti- AND syn-9,9 '-BIBENZONORBORNENYLIDENES AND 2,2 '-BIADAMANTYLIDENE Yoshiaki Sugihara; Rie Ohtsu; Juzo Nakayama
HETEROCYCLES,
Volume:75,
Number:10,
First page:2415,
Last page:2420, Oct. 2008
S-Aminothiiranium salts 5a-c of anti- and syn-9,9 '-bibenzonorbornenylidenes and 2.2 '-biadamantylidene were synthesized by reacting thiiranes 3a-c with O-mesitylenesulfonylhydroxylamine. Decomposition of 5a and 5c in CD(2)Cl(2) at rt yielded a mixture of the corresponding alkenes and thiiranes, whereas that of 5b yielded 1.2-thiazetidin-2-ium salts 8b. A CH(2)Cl(2) solution of 8b was treated briefly with aq. NaHCO(3) at 0 degrees C to produce N-unsubstituted 1,2-thiazetidine 10b.
PERGAMON-ELSEVIER SCIENCE LTD, English
DOI:https://doi.org/10.3987/COM-08-11412DOI ID:10.3987/COM-08-11412,
ISSN:0385-5414,
Web of Science ID:WOS:000260713200003 Synthesis of isolable thiirane 1-imides and their stereospecific ring-enlargement to 1,2-thiazetidines Yoshiaki Sugihara; Yui Aoyama; Haruki Okada; Juzo Nakayama
CHEMISTRY LETTERS,
Volume:37,
Number:6,
First page:658,
Last page:659, Jun. 2008
The isolation of thiirane 1-imides was achieved via imination of anti- and syn-9,9'-bibenzonorbornenylidene sulfides by Chloramine T at room temperature, followed by crystallization of the reaction mixture at -18 degrees C. Allowing CD2Cl2 solutions of the thiirane 1-imides stand at room temperature or heating their crystals to around 120 degrees C led to the formation of the corresponding 1, 2-thiazeti dines with retention of the configuration of the thiirane 1-imides.
CHEMICAL SOC JAPAN, English
DOI:https://doi.org/10.1246/cl.2008.658DOI ID:10.1246/cl.2008.658,
ISSN:0366-7022,
eISSN:1348-0715,
CiNii Articles ID:10021081588,
Web of Science ID:WOS:000257281900046 Preparation of sterically congested compounds: 6,7-di-t-butyl-1,4-naphthoquinone, 2,3,6,7-tetra-t-butylanthraquinone, and 2,3,6,7-tetra-t-butylanthracene Kazuki Iguchi; Yoshiaki Sugihara; Juzo Nakayama
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN,
Volume:81,
Number:2,
First page:304,
Last page:306, Feb. 2008
Sterically congested compounds, such as 6,7-di-t-butyl-4-naphthoquinone, 2 3 6,7-tetra-t-butylanthraquinone, and 2,3,6,7-tetra-t-butylanthracene, were synthesized via a Diels-Alder reaction involving 3,4-di-t-butylthiophene 1-oxide as the key step.
CHEMICAL SOC JAPAN, English
DOI:https://doi.org/10.1246/bcsj.81.304DOI ID:10.1246/bcsj.81.304,
ISSN:0009-2673,
eISSN:1348-0634,
CiNii Articles ID:10021073853,
Web of Science ID:WOS:000253948300018 Preparation and properties of nitrogen-substituted thiosulfinyl compounds and related new heterocycles Sanae Yoshida; Yoshiaki Sugihara; Juzo Nakayama
TETRAHEDRON LETTERS,
Volume:48,
Number:46,
First page:8116,
Last page:8119, Nov. 2007
The reaction of dilithiated N,N'-dimethyl-1,2-diphenylethylenediamine with disulfur dichloride (S2Cl2) gave a thiosulfinyl compound (R2N)(2)S=S, 2,5-dimethyl-3,4-diphenyl-1,2,5-thiadiazolidine 1-sulfide, whereas the treatment of dilithiated N,N'-bis(p-toluenesulfonyl)-1,2-diphenylethylenediamine with S2Cl2 furnished a new heterocycle, 3,6-bis(p-toluenesulfonyl)-4,5-diphenyl-4H,5H-1,2,3,6-dithiadiazine. (c) 2007 Elsevier Ltd. All rights reserved.
PERGAMON-ELSEVIER SCIENCE LTD, English
DOI:https://doi.org/10.1016/j.tetlet.2007.09.127DOI ID:10.1016/j.tetlet.2007.09.127,
ISSN:0040-4039,
CiNii Articles ID:80018176123,
Web of Science ID:WOS:000252097100006 チイラン新規合成法の開発と複素環化合物合成への応用
杉原 儀昭
Number:5(18年度), First page:527, Last page:528, 2007
チイラン新規合成法の開発と複素環化合物合成への応用
杉原 儀昭
総合研究機構研究プロジェクト研究成果報告書, Number:5(18年度), First page:527, Last page:528, 2007
小員性複素環化合物の環ひずみの解消を推進力にした硫黄と窒素原子を含む複素環化合物の新規合成法の開発
杉原 儀昭
Number:4(17年度), 2006
小員性複素環化合物の環ひずみの解消を推進力にした硫黄と窒素原子を含む複素環化合物の新規合成法の開発
杉原 儀昭
総合研究機構研究プロジェクト研究成果報告書, Number:4(17年度), 2006
アルケンを出発物質とするチイランの一段階合成法の開発
杉原 儀昭
Number:3(16年度), 2005
アルケンを出発物質とするチイランの一段階合成法の開発
杉原 儀昭
総合研究機構研究プロジェクト研究成果報告書, Number:3(16年度), 2005
9,9'-ビベンゾノルボルネニリデンエピスルフィドのメチルスルホニウム塩:合成と異性化
First page:980, Last page:981, 2001
9,9'-ビベンゾノルボルネニリデンエピスルフィドのメチルスルホニウム塩:合成と異性化
ケミストリーレターズ, First page:980, Last page:981, 2001
9,9'-ビベンゾノルボルネニリデンの単体硫黄による硫化反応:アルケンの立体配置を保持した選択的エピスルフィドの生成
Volume:41, First page:8913, Last page:8916, 2000
syn-およびanti-9,9'-ビベンゾノルボルネニリデンへのハロゲン付加反応の先例のない異例の立体化学 SUGIHARA Y; NODA K; NAKAYAMA J
Volume:41,
Number:46,
First page:8907,
Last page:8911, 2000
DOI:https://doi.org/10.1016/S0040-4039(00)01604-XDOI ID:10.1016/S0040-4039(00)01604-X,
ISSN:0040-4039 9,9'-ビベンゾノルボルネニリデンの単体硫黄による硫化反応:アルケンの立体配置を保持した選択的エピスルフィドの生成
テトラヘドロンレターズ, Volume:41, First page:8913, Last page:8916, 2000
syn-およびanti-9,9'-ビベンゾノルボルネニリデンへのハロゲン付加反応の先例のない異例の立体化学 テトラヘドロンレターズ,
Volume:41,
Number:46,
First page:8907,
Last page:8911, 2000
DOI:https://doi.org/10.1016/S0040-4039(00)01604-XDOI ID:10.1016/S0040-4039(00)01604-X,
ISSN:0040-4039 トリチオラン(6b,12b-エピトリチオアセナフト[1,2-a]アセナフチレン)の合成,構造,および環反転
Volume:7, First page:638, Last page:643, 1999
トリチオラン(6b,12b-エピトリチオアセナフト[1,2-a]アセナフチレン)の合成,構造,および環反転
ヘテロアトムケミストリー, Volume:7, First page:638, Last page:643, 1999