A facile microwave-assisted Diels–Alder reaction of vinylboronates
作者:Ariel M. Sarotti、Pablo L. Pisano、Silvina C. Pellegrinet
DOI:10.1039/c0ob00020e
日期:——
The DielsâAlder reaction of vinylboronates can be easily performed using microwave irradiation giving excellent yields of the cycloadducts. Pinacol vinylboronate was the reagent of choice due to its stability towards hydrolysis, operational simplicity and yields of DielsâAlder products. To the best of our knowledge, this is the first example of microwave-assisted DielsâAlder reaction of boron-substituted dienophiles. Subsequent in situ oxidation of the cycloadducts with alkaline hydrogen peroxide afforded the alcohols efficiently.
In situ formation of alkenyl- and alkynylboranes for Diels—Alder reactions by boron—silicon exchange with alkenyl- and alkynylsilanes
作者:Daniel A. Singleton、Shun-Wang Leung
DOI:10.1016/s0022-328x(97)00001-6
日期:1997.10
A variety of alkenylsilanes underwent transmetallation with BBr3 to afford the corresponding alkenyldibromoboranes in solution. Similarly, the transmetallation of alkynylsilanes with BCl3 afforded alkynyldichloroboranes. A number of the alkenyl- and alkynylboranes are novel and useful Diels-Alder dienophiles. An ionic mechanism for the transmetallation is proposed. (C) 1997 Elsevier Science S.A.
Kirby, Gordon W.; McGuigan, Henry; McLean, David, Journal of the Chemical Society. Perkin transactions I, 1985, p. 1961 - 1966
作者:Kirby, Gordon W.、McGuigan, Henry、McLean, David
DOI:——
日期:——
Alder; Rickert, Justus Liebigs Annalen der Chemie, 1940, vol. 543, p. 1,21
作者:Alder、Rickert
DOI:——
日期:——
Stereochemistry of olefinic cyclization and solvolytic displacement at vinyl carbon