Action of thionyl chloride on carboxylic acids in presence of pyridine.
D000143:Acids; D002264:Carboxylic Acids; D011725:Pyridines; D013461:Sulfur Oxides
D000143:Acids; D002264:Carboxylic Acids; D011725:Pyridines; D013461:Sulfur Oxides; C023589:thionyl chloride; C023666:pyridine
ACID/carboxylic; PYRIDINE; THIONYL CHLORIDE