Halocyclization of 2-Alkynylthioanisoles by Cupric Halides: Synthesis of 2-Substituted 3-Halobenzo[b]thiophenes.
β Scribed by Wen-Der Lu; Ming-Jung Wu
- Publisher
- John Wiley and Sons
- Year
- 2007
- Weight
- 27 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0931-7597
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## Abstract We present here our results on the electrophilic cyclization reaction of 3βalkynylthiophenes with different electrophiles such as I~2~, ICl, and PhSeBr. The cyclization reaction proceeded cleanly under mild reaction conditions, giving fused 4βiodoselenophene[2,3β__b__]thiophenes in exce