The one-step C-methylenation of anilines and indoles with CO2 and phenylsilane was catalyzed by a pentanuclear ZnII complex to give diarylmethanes via geminal C−H and C−C bond formation. It is...
Catalytic
CO2 reduction with phenylsilane under solvent-free
conditions was linked with the one-pot synthesis of 3,4-dihydropyrans
from β-dicarbonyl compounds and styrenes. The synthesis includes
three processes: (1) bis(silyl)acetal formation from CO2 and phenylsilane and a domino reaction of (2) Knoevenagel condensation
and (3) inverse-electron-demand oxa-Diels–Alder reaction. The
first process was catalyzed by a pentanuclear ZnII complex
(0.07 mol %) to generate bis(silyl)acetals, which were hydrolyzed
into formaldehyde to be used in the second step.
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