Chemo-, regio-, and stereoselective hydroboration of conjugated enyne alcohol/amine: facile synthesis of Z , Z -/ Z , E -1,3-dien-1/2-ylboronic ester bearing hydroxyl/amino group
Hydroboration of conjugated enyne alcohol/amine is studied by using copper salts and bis(pinacolato)diboron as pre-catalysts and boron source respectively. It is suggested that the chemo-selectivity is derived from a combined electronic influence of the heteroatoms on the substrate and the ligand on the transition metal. The regioselectivity is probably dominated mainly by electronic effect of the
作者:Stephen Caddick、Sakthitharan Shanmugathasan、Denis Brasseur、Vern M Delisser
DOI:10.1016/s0040-4039(97)01259-8
日期:1997.8
The presence of the p-methoxyphenyl protecting group enables the asymmetric dihydroxylation of homoallylic enynols to be carried out in good yield and with high levels of enantioselectivity.
对甲氧基苯基保护基的存在使得均烯丙基烯醇的不对称二羟基化能够以高收率和高对映选择性进行。
Ring Scission of Cyclic β-Halogeno-ethers with Samarium Di-iodide: A Synthesis of (E)- and (Z)-Enynols
作者:Leslie Crombie、Linda J. Rainbow
DOI:10.1016/s0040-4039(00)82388-6
日期:1988.1
Crombie, Leslie; Rainbow, Linda J., Journal of the Chemical Society. Perkin transactions I, 1994, # 6, p. 673 - 688
作者:Crombie, Leslie、Rainbow, Linda J.
DOI:——
日期:——
Crombie Leslie, Rainbow Linda J., J. Chem. Soc. Perkin Trans. 1, (1994) N 6, S 673-687