1: methacrylic acid methyl ester With (10H)-phenothiazine; 4-methoxy-phenol in xylene T=70°C; Heating / reflux; 2: With titanium(IV) isopropylate; di(n-butyl)tin oxide in xylene T=70 - 103°C; Heating / reflux; 3: 3-(dimethylamino)-n-propylamine in xylene T=103 - 150°C; 4 h; Heating / reflux; Product distribution / selectivity;

T=150°C; P=7500.75 Torr; Microwave irradiation;

1: methacrylic acid methyl ester With (10H)-phenothiazine; 4-methoxy-phenol Heating / refluxNeat (no solvent); 2: With di(n-butyl)tin oxide T=70 - 101°C; Heating / refluxNeat (no solvent); 3: 2-(dimethylamino)-ethanol; 3-(dimethylamino)-n-propylamine With titanium(IV) isopropylate Product distribution / selectivity; more than 3 stages;

(10H)-phenothiazine in toluene T=175 - 185°C; 0.0333333 h; Microwave irradiation;

sodium hydroxide

tri-ruthenium(0)dodecacarbonyl in 1,4-dioxane T=100°C; P=9880 Torr; 18 h;

carbon dioxide

in water

T=200°C; also with methyl acrylate; var. temp. and reaction time; also in the presence of amidation catalysts; Product distribution;

in diethyl ether T=20°C; 24 h;