Efficient synthesis of functionalized furans and benzofurans based on a ‘[3+2] cyclization/oxidation’ strategy
作者:Esen Bellur、Ilia Freifeld、Peter Langer
DOI:10.1016/j.tetlet.2005.02.040
日期:2005.3
Functionalized furans and benzofurans were prepared by DDQ oxidation of 2-alkylidenetetrahydrofurans, which are readily available by one-pot cyclizations of 1,3-dicarbonyl dianions or 1,3-bis-silyl enol ethers.
通过2-亚烷基四氢呋喃的DDQ氧化制备官能化的呋喃和苯并呋喃,这可以通过一锅式环合1,3-二羰基二价阴离子或1,3-双-甲硅烷基烯醇醚而容易获得。