... H. Gilman and G. C. Gainer, J. Am. Chem. ... (6) G. Kobrich and P. Buck, Chem. Ber., 103, 1412 (1970). ... E. S. Gould. "Mechanism and Structure in Organic Chemistry", D. C. Heath, Boston, Mass., 1959, p 207); however, 6, is reported to be 0.05 as determined by NMR (cf. ...