The Synthesis of New Type Bisazo Compounds Using 4-Hydroxy-2,2,6,6-Tetramethyl-1-Piperidinyloxyl as the Phase-Transfer Dehydrogenation Catalyst

Article abstract of DOI:10.1002/jccs.199800127

Using 4-hydroxy-2,2,6,6-tetramethyl-l-piperidinyloxyl as the phase-transfer dehydrogenation catalyst to prepare bisazo compounds is reported for the first time. Nine bisaryl carbodiazones were synthesized in high yields under mild conditions. This method