Methanol → HCID 86742519, compound

Participants

Reaction Steps

0.5 mmoles 1-acetoxy-3-methylthiopropene, (Z: E ratio 43:57), and 0.5 mmoles methanol were charged into a 71 cc stainless steel bomb equipped with a glass liner and a Teflon coated stir bar. Ten mole percent, based on 1-acetoxy-3methylthiopropene, of a catalyst comprising [(allyl)PdCl]2 plus Pφ3 co-catalyst (200 mole percent) was added. Toluene was included as an internal standard. Five milliliters of tetrahydrofuran as a solvent were also included in the reaction system. The reaction mixture was charged under argon. The bomb was sealed and carbon monoxide at a pressure of 500 psi (at room temperature) was charged to the bomb, and the bomb was heaterd to 100° C. and allowed to react for 44 hours with stirring. At the terminatlon of the reaction, the reaction produrts were analyzed by gas chromatography and it was found that 2-acetoxy-4-(methylthio)butanoic acid, methyl ester was produced in a yield of 1.5 percent, and that 2-acetoxy-4-(methylthio)thiobutanoic acid, methyl ester was produced in a yield of 3 percent, based on the 1-acetoxy-3-methylthiopropene reactant charged. Each of the products is hydrolyzable to methionine hydroxy analog.

Provenance & Evidence