silver; zinc in diethyl ether 24 h; Heating; Title compound not separated from byproducts;

lithium bromide in benzene 0.25 h; Ambient temperature;

<b>Multi-step reaction with 2 steps<br /> </b>1: AlCl₃ / various solvent(s) / 0.68 h / 90 &deg;C<br />2: 1) n-butyllithium, potassium tert-butoxide; 2) aq. HCl / 1) cyclopentane, 0 to 20 deg C, 15 min; 2) hydrolysis<br /> <br /> &nbsp;