One-pot preparation of 2-substituted and 2,3-disubstituted furans from 2-alkynal tetramethylethylene acetals and aldehydes using a divalent titanium reagent Ti(O-i-Pr)4/2 i-PrMgX
作者:Xin Teng、Takeshi Wada、Sentaro Okamoto、Fumie Sato
DOI:10.1016/s0040-4039(01)01068-1
日期:2001.8
Sequential treatment of 2-alkynal tetramethylethylene acetals with a divalent titanium reagent Ti(O-i-Pr)(4)/2 i-PrMgX and aldehydes gave, after acidic work-up, furans in good to excellent yields, thus providing a new efficient one-pot access to a variety of 2-substituted and 2,3-disubstituted furans including those having a functionalized substituent(s). (C) 2001 Elsevier Science Ltd. All rights reserved.