Substituted styrene cycloaddition to juglone and derivatives- regiochemical control
作者:Wayne B. Manning
DOI:10.1016/s0040-4039(01)90380-6
日期:1981.1
No regiochemical directing effects could be attributed to methoxy styrene ring substituents in the cycloaddition of substituted styrene to juglone and its methyl ether. Control of quinone electron distributions, however, led to higher regioselectivity.
Room-Temperature B(OAc)<sub>3</sub>-Promoted Diels–Alder Reaction of Juglone with Styrenes: Total Syntheses of Tetrangulol and Anhydrolandomycinone
作者:Day-Shin Hsu、Jiun-Yi Huang
DOI:10.1021/jo202448e
日期:2012.3.16
The Diels–Alderreaction of juglone with various styrenes in the presence of 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ) was promoted by B(OAc)3 at room temperature. The reaction proceeded smoothly and gave the products in a good yield and with excellent regioselectivity. This strategy was applied to the total syntheses of tetrangulol and anhydrolandomycinone.