| 摘要 |
PROBLEM TO BE SOLVED: To inexpensively and stably obtain the subject high-purity compound by using industrially inexpensively available cyclohexylamine as a protective agent for the double bond of a (meth)acrylic ester. SOLUTION: This compound, an N-monoalkyl(meth)acrylamide, is obtained using an amino amide of formula I (R1 is H or CH3; R2 is CnH2n+1; n is a natural number of 1-4) as intermediate. The amide adduct of formula I, in turn, is prepared by synthesizing a Michael adduct of a (meth)acrylic ester of formula II (R3 is CmH2m+1; m is a natural number of 1-4) and cyclohexylamine followed by reaction of the Michael adduct with a monoalkylamine in the presence of a strongly basic catalyst; the amino adduct thus obtained is thermally decomposed to form the objective N-monoalkyl(meth)acrylamide, which can be purified by distillation; thereby the objective compound can be afforded in an industrially advantageous way, such as without substantially producing dimeric adduct.
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