Nagaiah; Krupadanam, G. L. David; Srimannarayana, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2002, vol. 41, # 4, p. 858 - 862
Ring-closing-metathesis-based synthesis of annellated coumarins from 8-allylcoumarins
作者:Christiane Schultze、Bernd Schmidt
DOI:10.3762/bjoc.14.278
日期:——
conveniently accessible through a microwave-promoted tandem Claisen rearrangement/Wittig olefination/cyclizationsequence. They serve as a versatile platform for the annellation of five- to seven-membered rings using ring-closing olefin metathesis (RCM). Furano-, pyrano-, oxepino- and azepinocoumarins were synthesized from the same set of precursors using Ru-catalyzed double bond isomerizations and RCM in a defined