... Tetrahedron. Volume 27, Issue 18, 1971, Pages 4317-4322. Cover image. ... Download full text in PDF. Tetrahedron Vol 27. ... Chem. Prepr. 15, B37 (1970); MA McKervey, D. Grant and H. Hamill, Tetrahedron Letters 1975 (1970) P. von R. Schlcyer and MM Donaldson, J. Am. Chem. ...