... Volume 20, Issue 3, 1964, Pages 497-506. ... Download full text in PDF. Tetrahedron, 1964, Vol. 20. pp. ... of the adduct was I and not the isomer II, or a mixture, was deduced from 1 Preliminary communication, RD Chambers, J. Hutchin, n and WKR Musgrave, Tetrahedron Letters No. ...