Author/Authors :
Guarda، نويسنده , , Emerson A. and Marzari، نويسنده , , Mara R.B. and Frizzo، نويسنده , , Clarissa P. and Guarda، نويسنده , , Patrيcia M. and Zanatta، نويسنده , , Nilo and Bonacorso، نويسنده , , Helio G. and Martins، نويسنده , , Marcos A.P.، نويسنده ,
Abstract :
Synthesis of 4-alkoxy-1,1-dichloro-3-alken-2-ones [CHCl2C(O)C(R2)C(R1)-OR, where R, R1, R2 = Et, H, H; Me, Me, H; Et, H, Me; Me, –(CH2)2–; Me, –(CH2)3–; Et, Et, H; Et, Bu, H; Et, i-Pr, H; Et, i-Bu, H; Me, Ph, H; Me, thien-2-yl, H] from acylation of enol ethers and acetals with dichloroacetyl chloride, in ionic liquid ([BMIM][BF4] or [BMIM][PF6]) is reported. The synthesis of alkenones [R3–C(O)C(R2)C(R1)-OR], where R/R1/R2/R3 = Et/H/H/Ph, t-Bu/H/H/Ph, Me/-(CH2)4/Ph, Me/-(CH2)4/Me] from the reaction of enol ethers with benzoyl chloride or acetyl chloride, in ionic liquid [BMIM][BF4], is also reported. Last products are described for the first time.
Keywords :
acetals , Ionic liquids , Enol ethers , acylation
