camphor-10-sulfonic acid in dichloromethane 4 h; Ambient temperature; Yield given. Yields of byproduct given;
参考文献
Downham, Robert; Edwards, Paul J.; Entwistle, David A.; Hughes, Andrew B.; Kim, Kun Soo; Ley, Steven V.
Tetrahedron: Asymmetry, 1995 , vol. 6, # 10 p. 2403 - 2440
