Adams decarboxylation
The Adams decarboxylation is a chemical reaction that involved the decarboxylation of coumarins which have carboxylic acid group in the third position. The decarboxylation is achieved by aqueous solution of sodium bisulfite, heat and a concentrated solution of sodium hydroxide.{{cite journal|author1=Adams, R. |author2=Mathieu, J. |journal= J. Am. Chem. Soc.|year=1948|volume=70|pages=2120|doi=10.1021/ja01186a037|title=A New Synthesis of Atranol (2,6-Dihydroxy-4-methylbenzaldehyde) and the Corresponding Cinnamic Acid|issue=6}}{{cite journal|author1=Adams, R. |author2=Bockstaheler, T.E. |journal=J. Am. Chem. Soc.|year=1952|volume=74|pages=5346|doi=10.1021/ja01141a038|title=Preparation and Reactions of o-Hydroxycinnamic Acids and Esters|issue=21}}{{cite journal|author1=Cramer, F. |author2=Windel, H. |journal= Chem. Ber. |year=1956|volume=89|pages=354|doi=10.1002/cber.19560890227|title=Über Einschlußverbindungen, X. Mitteil.: Die blauen Jodverbindungen der Cumarine und anderer verwandter Verbindungen|issue=2}}