科研之友
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摘要
A new protocol has been developed for the synthesis of substituted thiophenes under mild and metal-free reaction conditions via the base promoted thioannulation of Morita-Baylis-Hillman acetates of acetylenic aldehydes with Potassium thioacetate involving a tandem allylic substitution/deacetylative 5-exo-dig-thiocycloisomerization. The obtained products provide an entry to 4H-thieno[3,2-c]chromene and thieno [3,2-c]dihydroquinoline.
- 出版日期2013-7-5
