1: With tert-butylhypochlorite in diethyl ether T=-40°C; 2 h; 2: With potassium tert-butylate in diethyl ether T=-40 - -20°C;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1098229', constants.ctx, '0')">methanol</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '8127944', constants.ctx, '0')">tin(ll) chloride</a> <br />T=20&deg;C;&nbsp;hydro-debromination;&nbsp;4&nbsp;h;&nbsp;<br /> &nbsp;