DOI: 10.1055/s-00000083

Synlett

References

For a combination of cinchona-alkaloid-derived thioureas and acids, see for example: Chen X, Zhu W, Qian W, Feng E, Zhou Y, Wang J, Jiang H, Yao Z.-J, Liu H.
Adv. Synth. Catal. 2012;
354: 2151

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