... 3; AGM Barrett, JA Flygare; J. Org. Chem, 56 (1991), p. 638. ... All new compounds were fully characterized by spectral data and microanalysis or high resolution mass spectra. The structures of the E and Z alkenes were determined either by comparisons of spectral data (IR, 1 H NMR, 13 C NMR) or by comparisons with published data, see. Tetrahedron, 44 (1998), p. 2875. ... b) M. Hoshi, Y. Masuda, A. Arase; Bull. Chem. Sec. Jpn., 59 (1986), p. 3985. ...