PLANAR CHIRAL [2.2]PARACYCLOPHANE-BASED BIS(THIOUREA)-CATALYZED HIGHLY DIASTEREO- AND ENANTIOSELECTIVE MICHAEL ADDITION REACTION OF NITROETHANE TO NITROSTYRENES
HETEROCYCLES(2021)
Abstract
To demonstrate the utility of [2.2]paracyclophane as a chiral organocatalyst backbone, we evaluated a planar chiral pseudo-ortho-[2.2]paracyclophane-based bis(thiourea) catalyst in the Michael addition reaction of nitroethane to nitrostyrenes. The catalyst produced the desired 1,3-dinitro compounds in high yields and high diastereo- and enantioselectivities.
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Key words
enantioselective michael addition reaction,planar chiral,nitroethane,nitrostyrenes,]paracyclophane-based
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