... Page 5. PAPER: 06/4137 JOURNAL OF CHEMICAL RESEARCH 2006 757 washed with water (2 × 30 ml) and dried over CaCl2. ... Chem. Soc., 1977, 1604; (d) WS Tsang, GW Griffin, MG Horning and WG Stillwell, J. Org. Chem., 1982, 47, 5339 and refs therein. ...