Sodium borohydride → HCID 21286954, compound

Participants

Reaction Conditions

Reaction Steps

After dissolving 6.8 g (0.05 moles) of zinc chloride in 120 ml of dehydrated tetrahydrofuran, 3.8 g (0.1 moles) of sodium borohydride were added to the solution. The mixture was agitated at 40° C. for 1 hour. After the mixture was cooled with ice, 9.8 g (0.05 moles) of 2,3-dihydro-2,3,5-trimethyl-6-(2-methyl-1-oxoethyl)-4H-pyran-4-one were dripped. After agitating the mixture for 3 hours, 8.7 g of 2,3-dihydro-2,3,5-trimethyl-6-(2-methyl-1-hydroxyethyl)-4H-pyran-4-one were obtained. The yield was 88%.

Provenance & Evidence