Spotlight: Triphenylphosphine in conjunction with TCCA/ or NCBT/ or DDQ/ or DEAD provide practical and convenient systems for the synthesis of a wide range of organic compounds

Acyl azides as important intermediates in organic chemistry especially in pharmaceuticals, dyes, and agrochemicals, prepared in the presence of trichloroisocyanuric acid–triphenylphosphine (TCCA/TPP) through the reaction of carboxylic acids and sodium azide at 0 ℃-room temperature in dichloromethane.