1: triethylamine / CHCl3 / 1 h / Ambient temperature 2: 3 N HCl, triethylamine / CHCl3 3: acetone / 5 h / Heating 4: 58 percent / 1.) 6 N HCl; 2.) 10 percent Na2CO3, pH=10-11 / 24 h / Heating View Scheme

iodine; triethylamine in acetonitrile T=5°C; Cooling with ice;

(i) ClCO2Et, (ii) aq. NH3; Multistep reaction;

1: 1,1'-(ethane-1,2-diyl)dipyridinium ditribromide; ammonia / water; acetonitrile / 20 °C / Cooling with ice 2: 1,1'-(ethane-1,2-diyl)dipyridinium ditribromide; triethylamine / water; acetonitrile / 0.17 h / 20 °C View Scheme

&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1696894', constants.ctx, '0')">diethyl ether</a> <br />T=0&deg;C;&nbsp;72&nbsp;h;&nbsp;<br /> &nbsp;