Abstract
A selective method for 2-aryl-2H -
and 4-aryl-4H -3,5-diformylpyrans synthesis
from 1,1,3,3-tetramethoxypropane and aromatic aldehydes was developed
using an FeCl3 catalyst in MeOH-AcOH and an
AlCl3 catalyst in DMA-AcOH.
Key words
acetals - pyrans - aldehydes - Lewis
acids - catalysis
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