1: 15.26 g / β-alanine; glacial acetic acid / hexane / 25 h / Heating 2: 4.7 g / 3-ethyl-5-(2-hydroxyethyl)-4-methylthiazolium bromide; triethylamine / ethanol / 21 h / 75 - 80 °C 3: 4.07 g / pivalic acid / tetrahydrofuran; toluene; heptane / 24 h / Heating View Scheme

acetic acid; 3-aminopropionic acid in hexane Condensation; 25 h; Heating;