THE NEW AND SIMPLE 'LEGO' SYSTEM : SYNTHESIS AND REACTIONS OF THIENYL-SUBSTITUTED 4-TRIBUTYLSTANNYL-2,6-OLIGOPYRIDINES
1999
Abstract 3,5-Disubstituted 1,2,4-triazines 3 are converted regioselectively to 4-tributylstannyl-2,6-oligopyridines 4 via [4+2] cycloadditions with ethynyltributyltin. These tin compounds 4 are coupled with aryl bromides and aryloyl chlorides in palladium catalyzed reactions to 4-aryl-2,6-oligopyridines and 4-aryloyl-2,6-oligopyridines 6 .
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