Annulation of propargylic dithioacetals leading to furan-containing oligoaryls*
نویسنده
چکیده
Reaction of propargylic dithioacetals with BuLi followed by treatment with dialdehydes yields the corresponding allenyl carbinols which can be cyclized to give the 2,3,5-trisubstituted furans. The use of this strategy for the synthesis of a range of alternating benzene-furan oligoaryls is described.
منابع مشابه
Au-catalyzed reaction of propargylic sulfides and dithioacetals.
Propargylic sulfides and dithioacetals are found to undergo similar transformations as propargylic carboxylates when catalyzed by AuCl or AuCl3, affording indene derivatives through pentannulation of aromatic rings. The reaction presumably involves Au carbene as the reactive intermediate.
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تاریخ انتشار 2005