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- W2950607890 endingPage "2783" @default.
- W2950607890 startingPage "2776" @default.
- W2950607890 abstract "Abstract A combination of 2-aryl substituted 1,3-dimethyl-benzimidazolines (DMBIHs) and tris(2,2′-bipyridine)ruthenium(II) chloride, Ru(bpy)3Cl2 was used to promote photoinduced electron-transfer (PET) reactions of α-halomethyl-substituted benzocyclic 1-alkanones. This photo-reagent system stimulates free radical forming, cleavage of both carbon–bromine and carbon–chlorine bonds that are not activated by carbonyl groups. The resulting free radicals undergo 5-exo hexenyl cyclization as well as sequential cyclization and ring-expansion (Dowd–Beckwith) reactions to form radicals that abstract hydrogen atoms from the radical cation of DMBIH to yield the observed products. The results of a study of the effects of substituents located on the 2-aryl ring of DMBIH suggest that steric and hydrogen-bonding interactions influence the nature of the reaction pathways followed by the radical intermediates. PET reactions using an iridium complex and DMBIH were also investigated." @default.
- W2950607890 created "2019-06-27" @default.
- W2950607890 creator A5003231755 @default.
- W2950607890 creator A5009551422 @default.
- W2950607890 creator A5032335582 @default.
- W2950607890 creator A5035556684 @default.
- W2950607890 creator A5051469678 @default.
- W2950607890 creator A5055947731 @default.
- W2950607890 creator A5063764783 @default.
- W2950607890 creator A5083796151 @default.
- W2950607890 date "2014-04-01" @default.
- W2950607890 modified "2023-09-30" @default.
- W2950607890 title "A photo-reagent system of benzimidazoline and Ru(bpy)3Cl2 to promote hexenyl radical cyclization and Dowd–Beckwith ring-expansion of α-halomethyl-substituted benzocyclic 1-alkanones" @default.
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