... A. Bax. R. Freeman and G. Morris, 2. m, Reson. 42, 164 (19811; A. Bax and R. Freeman, Ibid. ... 1961, 506; A. Horeau, Ibid. 1962, 965; A. Horeau and HB Kagan, Tetrahedron 20, 2431 (1964). 12. A. Horeau in Stereochemistry, Fundamentals and Methods, HB Kagan, Ed., Vol. ...