1: 4-methyl-2-methylsulphanylpyrimidine With n-butyllithium; diisopropylamine in tetrahydrofuran T=-78°C; 1 h; 2: 1-benzenesulfonyl-1H-pyrrolo[2,3-b]pyridin-5-carboxylic acid methyl ester in tetrahydrofuran T=-110°C; 0.166667 h; Product distribution / selectivity;