... (16) i. Tazawa, S. Tazawa, J. L. Alderfer, and P. 0. P. Ts'O, Biochemistry, 11, (17) H. Metzger, H. Konig, and K. Seelert, Tetrahedron Lett., 867 (1964); L. F. Fieser and M. Fieser, "Reagents for Organic Synthesis", Vol. 1, Wiley, New York, NY, 1967, p 317. ... 1596 J. Org. Chem., 1'01. ...