... Chem., 71, 521 (1959). (15) K. C. Brannock, A. Bell, RD Burpitt, and C. A. Kelly, J. Org. ... Chem., 26, 625 (1961). Patent 618,772 (1961). ... acid. The organic layer which separated was taken up in ether, washed Rith water, and dried over anhydrous magnesium si 1- fate. ...