Ontology highlight
ABSTRACT:
SUBMITTER: Schultze C
PROVIDER: S-EPMC6296409 | biostudies-literature | 2018
REPOSITORIES: biostudies-literature
Beilstein journal of organic chemistry 20181205
8-Allylcoumarins are conveniently accessible through a microwave-promoted tandem Claisen rearrangement/Wittig olefination/cyclization sequence. 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 order. One class of products, pyrano[2,3-<i>f</i>]chromene-2 ...[more]