Synthesis Reference(s): |
Journal of the American Chemical Society, 93, p. 195, 1971 DOI: 10.1021/ja00730a033 The Journal of Organic Chemistry, 64, p. 3544, 1999 DOI: 10.1021/jo982317b Tetrahedron Letters, 28, p. 295, 1987 DOI: 10.1016/S0040-4039(00)95711-3 |