... Chem. 1968,1I, 217. (4) Green, TW "Protective Groups in Organic Synthesis"; Wiley: (5) Townsend, C. A.; Bloom, L. M. Tetrahedron Lett. 1981, 3923. ... Page 2. 5268 J. Org. Chem., Vol. ... Since all the chemistry takes place in one pot, the process is quick and operationally simple. ...