as described in example 1 nmr u03b4 ppm dmso d 6 0 80 1 00 m 3h 1 24 s 30h 2 10 2 40 m 4h 2 40 2 60 m 2h 2 80 3 10 m 2h 6 30 6 68 m 3h 7 70 br 1h 8 50 s 1h 8 70 s 1h ethyl 3 4 diacetoxyphenylpropionate and di n hexylamine were used to obtain n n di n hexyl 3 4 dihydroxyphenylpropionamide by carrying out the same procedures as described in example 1 as an oily product nmr u03b4 ppm cdcl 3 0 60 1 00 m 6h 1 00 1 60 m 16h 2 40 3 00 m 4h 3 00 3 40 m 4h 6 10 7 00 m 5h ethyl 3 4 diacetoxyphenylpropionate and cyclohexylamine were used to obtain n cyclohexyl 3 4 dihydroxyphenylpropionamide by carrying out the same procedures as described in example 1 as an fatty product nmr u03b4 ppm cdcl 3 0 10 2 00 m 11h 2 20 2 60 m 2h 2 60 2 90 m 2h 5 40 5 60 m 1h 6 00 7 00 m 3h 8 10 br 1h ethyl 3 4 diacetoxyphenylpropionate and n methylbenzylamine were used to obtain n methyl n benzyl 3 4 dihydroxyphenylpropionamide by carrying out the same procedures as described in example 1 nmr u03b4 ppm cdcl 3 2 40 3 00 m 7h 4 50 s 2h 6 40 7 80 m 10h ethyl 3 4 diacetoxyphenylpropionate and aniline were used to obtain n phenyl 3 4 dihydroxyphenylpropionamide by carrying out the same procedures as described in example 1 as an oily product nmr u03b4 ppm dmso d 6 2 40 2 90.