Synthesis and properties of 3-formyl-4H-pyrans
Copyright policy ) K. F. Suzdalev; A. V. Koblik;
Synthesis and properties of 3-formyl-4H-pyrans
The Vilsmeier formylation of 4H-pyrans afforded 3-formyl-4H-pyrans. These were converted to 3-formylpyrylium salts, from which pyridine or pyridine salts with an aldehyde group at C(3) were obtained. The reaction between 3-formyl-4-allyl-4H-pyran and methyltrifluoromethanesulfonate proceeded via a Koop rearrangement.
- Southern Federal University Russian Federation
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