Hydroquinone → 2-Ethoxy-4-phenyl-3,4-dihydro-2H-pyran

Participants

Reaction Steps

313 g (2.37 Mole) of cinnamic aldehyde, 290 g (4.03 Mole) of ethyl vinyl ether and 45 g of hydroquinone were heated at 200° for 16 hours in a 1 l stainless steel autoclave (pressure about 20 atm.). After fractional distillation of the crude material thus obtained, there were isolated 422 g (87% yield) of 2-ethoxy-4-phenyl-3,4-dihydro-2H-pyran, b.p. 89°/0.02 Torr;

Provenance & Evidence