Hwu, Jih Ru; Tseng, Wen Nan; Patel, Himatkumar V.; Wong, Fong Fuh; Horng, Den-Nan; Liaw, Ben Ruey; Lung Ching, Lin
Journal of Organic Chemistry, 1999 , vol. 64, # 7 p. 2211 - 2218

Galobardes, Mercedes R.; Pinnick, Harold W.
Tetrahedron Letters, 1981 , vol. 22, # 52 p. 5235 - 5238