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Facile synthesis of [1]benzothieno[3,2-b]benzothiophene from o-dihalostilbenes

✍ Scribed by Masahiko Saito; Tatsuya Yamamoto; Itaru Osaka; Eigo Miyazaki; Kazuo Takimiya; Hirokazu Kuwabara; Masaaki Ikeda

Publisher
Elsevier Science
Year
2010
Tongue
French
Weight
396 KB
Volume
51
Category
Article
ISSN
0040-4039

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✦ Synopsis

A convenient one-pot synthesis of [1]benzothieno [3,2-b]benzothiophene from readily available o-dihalostilbenes using combined reagents of sodium sulfide nonahydrate (Na 2 SÁ9H 2 O) or sodium hydrosulfide hydrate (NaSHÁnH 2 O) and sulfur is described along with plausible reaction paths in this intriguing reaction.

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One-step synthesis of [1]benzothieno[3,2
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Simple one-step synthesis of [1]benzothieno [3,2-b][1]benzothiophene (BTBT) from commercially available o-chlorobenzaldehyde is reported. The procedure is also applicable to the synthesis of dinaphtho[2,3-b:2 0 ,3 0 -f]thieno[3,2-b]thiophene (DNTT).

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