ChemInform Abstract: An Efficient Synthesis of 6H,7H‐Chromeno[4,3‐b]chromenes and 6,7‐Dihydrothiochromeno[3,2‐c]chromenes as 9‐Substituted Xanthene Like Analogues.
Cheminform(2012)
Abstract
The reaction of aldehyde substrates with Grignard reagents is followed by Friedel—Crafts cyclization to produce biologically interesting scaffolds.
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cheminform abstract,efficient synthesis,analogues,h-chromeno[
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