None: sodium iodide ( 0.27 g , 1.8 mmol ) 
None: 70 % H2SO4 ( 30 mL ) 
None: nitrogen 
None: acrolein ( 1.1 mL , 13.6 mmol ) 
None: water ( 50 mL ) 
None: solution ( 500 mL ) of Na2CO3 ( 60 g ) 
None: chloroform ( 3x200 mL ) 
None: Na2SO4 
None: hexanes / ethyl acetate 
