Electrocyclization of cis-dienals in organic synthesis: a new and versatile synthetic method for the preparation of aryl- and heteroaryl-fused coumarins.
Benzo-, furo-, thieno-, and pyrido[f]coumarins were prepared by generating the 2H-pyran-2-one moieties from the oxidation of the corresponding 2H-pyran rings, which were formed in situ from the electrocyclization of cis-dienals.
Hon
Yung-Son
YS
Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi 62102, Taiwan, R. O. C. cheysh@ccu.edu.tw
Tseng
Tze-Wei
TW
Cheng
Chia-Yi
CY
D002384:Catalysis; D003374:Coumarins / Q000138:chemical synthesis* / Q000737:chemistry; D003500:Cyclization; D010084:Oxidation-Reduction; D011714:Pyrans / Q000737:chemistry
D003374:Coumarins; D011714:Pyrans