Process for the preparation of (meth)acrylic esters and derivatives
View Patent ↗Transesterification processes for producing a compound of formula (I) wherein R1 is H or a methyl group, A and B are each, independently, a linear or branched C2-C5 alkylene group, comprising reacting: an acrylate or methacrylate of formula (II) wherein R1 is H or a methyl group and R2 is a C1-C4 alkyl group, with a compound of formula (III) wherein the reaction is performed: (i) in the presence of calcium oxide and calcium hydroxide, and (ii) wherein the molar ratio of the compounds of formula (II) to formula (III) is less than 4:1 or 3:1 respectively.
1. A process for producing a compound of formula (I)
wherein R1 is H or a methyl group, A and B are each, independently, a linear or branched C2-C5 alkylene group, comprising reacting:
an acrylate or methacrylate of formula (II)
wherein R1 is H or a methyl group and R2 is a C1-C4 alkyl group, with a compound of formula (III)
wherein the reaction is performed:
(i) in the presence of calcium oxide and calcium hydroxide, and
(ii) wherein the molar ratio of the compounds of formula (II) to formula (III) is less than 5:1, respectively.
2. The process of claim 1 wherein the molar ratio of the compounds of formula (II) to formula (III) is less than 4:1, respectively.
3. The process of claim 1 wherein the molar ratio of the compounds of formula (II) to formula (III) is less than 3.5:1, respectively.
4. The process of claim 1 wherein the molar ratio of the compounds of formula (II) to formula (III) is less than 3:1, respectively.
5. The process of claim 1 wherein the molar ratio of the compounds of formula (II) to formula (III) is less than 2.5:1, respectively.