Whitten, Jeffrey P.; McCarthy, James R.; Matthews, Donald P. Synthesis, 1988 , # 6 p. 470 - 472 Title/Abstract Full Text Show Details Reese, Colin B.; Pei-Zhuo, Zhang Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1993 , # 19 p. 2291 - 2302