Reactions of trialkylalkynylborates with 2-alkyl-1,3-dioxalan-2-ylium fluorosulphonates. Versatile direct routes to -αβ-unsaturated ketones, specifically protected 1,3-diketones and other ketonic species.
The chemistry of organoborates. 9. A regiospecific and highly stereoselective construction of trisubstituted αβ-unsaturated ketones, tetrasubstituted αβ-unsaturated ketones and specifically protected 1,3-diketones from alkynyltrialkylborates
作者:Andrew Pelter、M. Eamon Colclough
DOI:10.1016/0040-4020(94)00953-r
日期:1995.1
fashion such that the dioxolanium group and the migrating group are on the same side of the new alkene intermediate. Hydrolysis of the intermediate yields Z-trisubstituted αβ-unsaturatedketones in which all three substituents have different origins and can be independently varied. Oxidation of the intermediates gives β-ketoacetals, which are regiospecifically protected 1,3-diketones. If the initial intermediates
Pelter Andrew, Colclough M. Eamon, Tetrahedron, 51 (1995) N 3, S 811-828
作者:Pelter Andrew, Colclough M. Eamon
DOI:——
日期:——
PELTER, A.;COLCLOUGH, M. E., TETRAHEDRON LETT., 1986, N 17, 1935-1938
作者:PELTER, A.、COLCLOUGH, M. E.
DOI:——
日期:——
Reactions of trialkylalkynylborates with 2-alkyl-1,3-dioxalan-2-ylium fluorosulphonates. Versatile direct routes to -αβ-unsaturated ketones, specifically protected 1,3-diketones and other ketonic species.