反应 #3019834
相关文献 (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US09029607B2
反应条件: temp:217.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: In a 500 ml three-necked Morton flask equipped with mechanical stirrer, thermometer and reflux condenser was added 100 g of 3-allyloxybenzaldehyde (0.62 moles, 1 eq.) and 150 g of cis/trans decalin (1.5 vol). The mixture was purged with nitrogen and then heated to a reflux temperature of 217° C. The reaction was maintained at this reflux temperature for seven hours then cooled and 231 mL of toluene was added. The reaction mixture was then allowed to cool to room temperature. After stirring for 18 hours and further cooling to 0-5° C., reaction mixture was filtered and the cake washed with 200 mL of heptane. The wet cake was stirred in 200 mL of heptane for 1-2 hours at room temperature. After filtration and drying of the cake at 40° C., 54.27 g of crude 2-allyl-3-hydroxybenzaldehyde were obtained. This represents a recovery of 82% of the available 2-allyl product produced by the Claisen rearrangement. In a 500 ml three-necked Morton flask equipped with mechanical stirrer thermometer and reflux condenser The mixture was purged with nitrogen The reaction was maintained at this reflux temperature for seven hours then cooled 231 mL of toluene was added to cool to room temperature further cooling to 0-5° C. reaction mixture was filtered the cake washed with 200 mL of heptane The wet cake was stirred in 200 mL of heptane for 1-2 hours at room temperature After filtration drying of the cake at 40° C.
来源 ID: ord-3b9fee1aecac4383acc59a94700d5628