sodium 1.) HMPA, 100 deg C, 1-3 h; 2.) HMPA, RT, 30 min; Yield given. Multistep reaction;

sodium in N,N,N',N',N'',N''-hexamethylphosphoric triamide various bis(alkylthio)bipyridyles; investigation of the selective transalkylation influenced by the method of addition of the alkylating agent; Product distribution;