... Page 2. Journal of Medicinal Chemistry, 1970, Vol. 13, &Yo. 6 1041 ... Y. Duiioff, J . Org. Chem. 33, 3342 (1968). I11 x 0 x Iv V a, X=F, n=l; b, X=Cl, n=l; c, X=Br, n=l; d, X=I, n=l; e, X=I, n=O; f, X=I, n=2 with twice the vol of H20, and extd with C6He. ...