Novel Multicomponent Domino Approach to 2,5-Bifunctionalized Five-Membered Cyclic Nitrones
作者:Milan Potáček、Marian Buchlovič、Stanislav Man
DOI:10.1055/s-0031-1289726
日期:2012.3
Multicomponent reactions of 2,2-dimethylpenta-3,4-dienal oxime with aldehydes and primary alcohols were studied and the optimum conditions for preparing a new family of 2,5-substituted five-membered cyclic nitrones were identified. This reaction offers direct access to the target structures in a single synthetic step. The scope and limitations of the reaction were evaluated, and all products were
1,3-Dipolar cycloadditions of new 2,5-bifunctionalized five-membered cyclic nitrones
作者:Marian Buchlovič、Simona Hebanová、Milan Potáček
DOI:10.1016/j.tet.2012.01.043
日期:2012.4
A new family of five-membered cyclic nitrones bearing functional groups at positions 2 and 5 were tested in 1,3-cycloadditions with various dipolarophiles. These reactions gave the corresponding cycloadducts as single diastereomers in high yields. The reaction scope was examined, 23 compounds were isolated and fully characterized. The comparison of the reactivity was carried out by a study of reaction