A solution of BOC-L-glutamyl-L-proline dibenzyl ester (3.4 g, 10 mmol), cooled to 0° C., was treated with trifluoroacetic acid (25 ml) for 2 h. at room temperature. After removal of the volatiles at reduced pressure the residue was triturated with ether to give L-proline-L-glutami...
In another suitable process for the production of the imidazolines corresponding to general formula (II) esters of fatty acids corresponding to general formula (III) with short-chain alcohols, particularly fatty acid methylester or ethylester, are used as starting material. The observations made on...
(4-hydroxy-3-t-butylphenyl) butyric acid] glycol ester,4,4'-butylidene-bis-(6-t-butyl-m-cresol), 1,1,3-tris-(2-methyl-4-hydroxy-5-t-butylphenyl) butane, 1,3,5-tris-(3,5-di-t-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene, tetrakis[methylene-3-(3,5-di-t-butyl-4-...
epichlorohydrin is first reacted with the carboxylic acid of the formula V or with the phenol of the formula VI and the resulting intermediate is then reacted with the piperidine compound of the formula III, the epoxide ring being opened, to give the desired ester of the formula I or phenol...