SEARCH Articles Figures Tables 1.3- Oxazoline-4-carboxylic acid 2- -methyl-2-oxazolines 2-methyl -2-oxazoline 2-oxazoline-4-carboxylate Carboxylic acids methyl esters Carboxylic acids methylation Carboxylic acids oxazolines Carboxylic methyl esters Methyl carboxylate Oxazoline-4-carboxylic acid esters