The first examples of calcium-catalyzed aza-Piancatelli reactions between substituted 2-furylcarbinols and aniline derivatives are described. A variety of 4-aminocyclopentenones have been synthesized stereoselectively in high yields. The experimental procedure utilizes simple salts and does not require specific precautions.
Sulfoximines make up a class of compounds of growing interest for crop science and medicinal chemistry, but methods for directly incorporating them into complex molecular scaffolds are lacking. Here we report a scandium-catalyzed variant of the aza-Piancatelli cyclization that can directly incorporate sulfoximines as nucleophiles rather than the classical aniline substrates. Starting from 2-furylcarbinols
The first highly enantioselective oxa-Piancatelli rearrangement has been developed. This process which is catalyzed by a chiral BINOL-derived phosphoric acid rearranges a wide range of furylcarbinols into densely substituted γ-hydroxy cyclopentenones in high yield with excellent diastereo- and enantioselectivities (up to 99 : 1 er). This reaction exhibits a high functional group tolerance and was applied
DAURIA, M.;DONOFRIO, F.;PIANCATELLI, G.;SCETTRI, A., GAZZ. CHIM. ITAL., 1986, 116, N 4, 173-175
作者:DAURIA, M.、DONOFRIO, F.、PIANCATELLI, G.、SCETTRI, A.
DOI:——
日期:——
Calcium(II)-Catalyzed Aza-Piancatelli Reaction
作者:David Lebœuf、Emmanuelle Schulz、Vincent Gandon
DOI:10.1021/ol5032987
日期:2014.12.19
The first examples of calcium-catalyzed aza-Piancatelli reactions between substituted 2-furylcarbinols and aniline derivatives are described. A variety of 4-aminocyclopentenones have been synthesized stereoselectively in high yields. The experimental procedure utilizes simple salts and does not require specific precautions.