titanium tetrachloride; zinc in tetrahydrofuran Ambient temperature;

2: aqueous HBr View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '11382438', constants.ctx, '0')">potassium fluoride on basic alumina</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1718733', constants.ctx, '0')">ethanol</a> <br />T=30&deg;C;&nbsp;<br /> &nbsp;