Ph3Sn-O-SnPh3 1.) benzene, 2.) benzene, 3 h, reflux; Yield given. Multistep reaction. Further byproducts given. Yields of byproduct given;

Ph3Sn-O-SnPh3 1.) benzene, 2.) benzene, 3 h, reflux; Yield given. Multistep reaction. Further byproducts given. Yields of byproduct given;