科研之友
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摘要
The title compounds have been prepared from 2-bromophenyl isothiocyanates 1. Thus, 2-lithiophenyl isothiocyanates 2, obtained from 1 and BuLi through Br/Li exchange, reacted with Se at -78 degrees to form lithium benzoselenazole-2-thiolates 3, which, upon aqueous workup, afforded benzoselenazole-2(3H)-thiones 4. The thiolates 3 were alkylated with reactive alkyl halides and acylated with carboxylic acid chlorides to give 2-(alkylsulfanyl)benzoselenazoles 5 and S-(benzoselenazol-2-yl) thiocarboxylates 6, respectively.
- 出版日期2012-5
