- Controlled Synthesis of Thiazole-Based Polymers and Block Copolymers by RAFT Polymerization of Azolyl S-Vinyl Sulfides and Metal Complexation
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We studied the RAFT polymerization of five S-vinyl sulfide derivatives containing azole units, including 2-benzothiazolyl vinyl sulfide (BTVS), 2-thiazolyl vinyl sulfide (2-TVS), 1,3,4-thiadiazolyl vinyl sulfide (1,3,4-TVS), 5-methyl-1,3,4-thiadiazolyl vi
- Nakabayashi, Kazuhiro,Matsumura, Aiko,Abiko, Yohei,Mori, Hideharu
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- Synthesis of N- and S-vinyl derivatives of heteroaromatic compounds using phase-transfer catalysis
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A method has been developed for the synthesis of N- and S-vinyl derivatives of heteroaromatic compounds from NH heterocycles or their thiols in the phase-transfer catalytic system ClCH2CH2Br-KOH (s)-18-crown-6-toluene. It is shown that it is possible to prepare N,S-divinyl derivatives of 3-mercaptoindole and 2-mercaptobenzimidazole.
- Abele,Dzenitis,Rubina,Lukevics
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- Synthesis of alkylthio- and arylthioheteroarenes by regioselective grignard reaction of thiocyanatoheteroarenes
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Treatment of thiocyanatoheteroarenes (1) with Grignard reagents (2) afforded alkylthio- or arylthioheteroarenes (3-6) in good yields. Grignard reagents regioselectively attacked the sulfur atom of the thiocyanato group owing to the metal-chelating effect of this group in combination with the hetero ring-nitrogen. 2-Thiocyanatopyridine (1a), 2-thiocyanatopyrimidine (1b), 2-thiocyanatobenzothiazole (1c), and 4-thiocyanatoquinazoline (1d) were converted into a variety of sulfides. Sulfides consisting of two heteroarenes linked by a sulfur atom were readily obtained by this method.
- Nagasaki, Izuru,Matsumoto, Miyuki,Yamashita, Masanori,Miyashita, Akira
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p. 1015 - 1024
(2007/10/03)
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- REACTIONS OF BENZOTHIAZOL-2-THIONE AND BENZOTHIAZOL-2-ONE WITH ACETYLENE
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Reaction of benzothiazol-2-thione and benzothiazol-2-one with acetylene in the presence of potassium hydroxide or cadmium acetate gives 2-vinylthiobenzothiazole and 3-vinylbenzothiazol-2-one, respectively.Benzothiazol-2-thione is partially converted to benzothiazol-2-one by the action of Cd(OAc)2.Under vinylation conditions the latter also forms 2-vinylthioaniline.
- Abramova, N. D.,Afonin, A. V.,Naumova, G. G.
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p. 223 - 224
(2007/10/02)
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- GAS/SOLID-REACTIONS WITH SULFUR COMPOUNDS
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The various types of gas/solid-reactions (addition, elimination, substitution, condensation, catalyzed cycloaddition) in different branches of sulfur chemistry (heterocycles, S-vinyl-compounds, thioethers, thiols, sulfur dioxide) are reviewed, new types a
- Kaupp, Gerd,Luebben, Doris,Sauerland, Olaf
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p. 109 - 120
(2007/10/02)
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