Table 23.
Aza-Michael addition of primary amines to β-trifluromethyl-β-phenylnitroolefin catalyzed nitrogen heterocyclic carbene.
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103 | R1 | Yield [%] | ee [%] |
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a | C6H5CH2- | 90 | 91 |
b | 2-MeC6H4CH2- | 67 | 91 |
c | 4-MeOC6H4CH2- | 89 | 92 |
d | 3,5-(MeO)2C6H3CH2- | 56 | 86 |
e | C6H5(CH2)2- | 85 | 86 |
f | 4-BrC6H4(CH2)2- | 68 | 87 |
g | CH3(CH2)2- | 80 | 92 |
h | C7H15CH2- | 87 | 95 |
i | C6H5(CH2)3- | 82 | 93 |
j | (CH3)2CH(CH2)2- | 79 | 89 |
k | cyclopropyl- | 79 | 97 |
l | cyclobutyl- | 78 | 94 |
m | 2-pyridylethyl- | 87 | 93 |
n | BocHN(CH2)2 | 79 | 91 |
o | MeO(CH2)3- | 87 | 87 |
p | (Me)2N(CH2)2- | 99 | 91 |
q | 2-thienyl(CH2)2- | 98 | 93 |