Visible‐light‐Mediated Dual Catalytic Spiro Annulation of 2‐Aryl Quinazolin‐4(3H)‐ones with N‐Substituted Maleimides
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DOI: 10.1002/ejoc.202500462
Abstract: Visible light‐induced, dehydrogenative spiro annulation of 2‐aryl quinazolin‐4(3H)‐ones with maleimides has been achieved at ambient condition by merging Rh(III)‐catalysis with photo‐redox catalysis. Various spiro‐cyclized quinazolinone derivatives were synthesised with a broad substrate scope in up… read more here.
Keywords: aryl quinazolin; spiro; visible light; spiro annulation ... See more keywords
Ru(II)-catalyzed oxidative (4+3) C-H/C-H annulation of 2-aryl-4H-pyrido[1,2-a]pyrimidin-4-ones with allyl alcohol.
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DOI: 10.1039/d5cc00318k
Abstract: A ruthenium(II)-catalyzed direct oxidative (4+3) C-H/C-H annulation of 2-aryl-4H-pyrido[1,2-a]pyrimidin-4-ones with allyl alcohol has been described. The developed method yielded the corresponding annulated products in moderate to good yields. In addition, based on the control experimental… read more here.
Keywords: annulation; pyrido pyrimidin; pyrimidin ones; aryl pyrido ... See more keywords