Hexane → HCID 53841034, compound

Participants

Reaction Conditions

Reaction Steps

40.4 g (0.1 moles) of methyltriphenylphosphonium iodide were suspended in 400 ml of anhydrous ether under argon gas flow. After cooling the mixture to 0° C., 90 ml (0.15 moles) of a hexane solution of n-butyl lithium were dripped. 19.6 g (0.1 moles) of 2,3-dihydro-2,3,5-trimethyl-6-(2-methyl-1-oxoethyl)-4H-pyran-4-on obtained in Example 3 were added dripwise to the mixture solution, and the mixture was agitated for 1 hour to obtain 10.1 g of 2,3-dihydro-2,3,5-trimethyl-6-(3-methyl-1-propenyl)-4H-pyran-4-one. The yield was 56%.

Provenance & Evidence