thionyl chloride in Petroleum ether 2 h; Heating; Yield given;

thionyl chloride 5 h; Heating; Yield given. Yields of byproduct given;

1: thionylchloride / 5 h / Heating 2: 24 percent / 1) Me5C5H, 1,48M BuLi / tetrahydrofuran; hexane 3: 91 percent / 1) 1,3-cyclopentadiene, 1.36M BuLi / tetrahydrofuran; hexane View Scheme

1: thionylchloride / 5 h / Heating 2: 24 percent / 1) Me5C5H, 1,48M BuLi / tetrahydrofuran; hexane 3: 91 percent / 1) 1,3-cyclopentadiene, 1.36M BuLi / tetrahydrofuran; hexane 4: 1.48M BuLi / tetrahydrofuran; hexane View Scheme

1: thionylchloride / 5 h / Heating 2: 24 percent / 1) Me5C5H, 1,48M BuLi / tetrahydrofuran; hexane View Scheme