... The separated organic Page 6. 206 CARDELLINI, GRECI, AND TOSI layer was dried, evaporated to dryness and the residue was chromatographed on a Si02 column eluting with cyclohexane. ... (b) Brownlie, IT and Ingold, KU, Can. J. Chem., 1967,45,2427. Rozantsev, EG and Shalle, WD, Synthesis,