Journal
ACS OMEGA
Volume 6, Issue 8, Pages 5812-5824Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.0c06233
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Funding
- National Natural Science Foundation of China [51373067]
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A series of chiral thiourea compounds with multiple H-bond donors derived from hydroquinine have been reported. The aza-Henry reaction of isatin-derived ketimines and long-chain nitro-alkanes catalyzed by these chiral thioureas shows high enantioselectivity and excellent diastereoselectivity. This work represents the first report on long-chain nitroalkanes as substrates with excellent diastereoselectivity in metal-free catalytic systems.
A series of chiral thiourea bearing multiple H-bond donors derived from hydroquinine has been reported. The aza-Henry reaction of isatin-derived ketimines and long-chain nitro-alkanes catalyzed by these chiral thioureas can achieve high enantioselectivity (78-99% ee) and excellent diastereoselectivity (up to 99:1). This work is the first report on long-chain nitroalkanes as substrates with excellent diastereoselectivity in metal-free catalytic systems.
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