Citation:
ZHANG Tianyi, NIAN Wenxia, JIN Ying. Organocatalytic Asymmetric Michael Addition of Anthrone with β-Nitroolefins[J]. Chinese Journal of Applied Chemistry,
;2015, 32(4): 422-427.
doi:
10.11944/j.issn.1000-0518.2015.04.140313
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Cinchona alkaloid derivatives as organocatalysts were applied in asymmetric Michael addition reaction of anthrone with various trans-β-nitroolefins. Solvent,temperature and catalyst loading were screened.The optimized conditions are using toluene as the solvent with a 5%( molar fraction) loading of catalyst 1b at room temperature. The products are obtained in 91%~99% yield with up to 95% ee.
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