| abstract |
FIELD: organic chemistry. SUBSTANCE: product: esters of tricyclic acids of the formula , at X - C 6 H 4 , , R 1 =R 2 - -CH-(CH 3 )(C 6 H 4 CH 3 -n, , CH 2 CH(Y)R, at Y - Cl, R-C 3 H 7 , C 4 H 9 , Y - CN, R - C 2 H 5 , C 3 H 7 , C 4 H 9 ,, CH(CH 3 )CH 3 , -CH 2 CH(CH 3 )CH 3 , * CH(CH 3 ), C 2 H 5 -X at X - , R 1 =R 2 - - CH-(CH 3 )C 6 H 13 , , CH(CH 3 )C 6 H 5 , X - C 6 H 4 , , R 1 - CH-(CH 3 )C 6 H 5 , R 2 - , R 1 - , R 2 -- , (CH 3 )CH 3 (CH 2 HC(CN)CH 2 CH(CH 3 CH 3 . Reaction conditions: reagent 1 - S-2-chloroalkanol; reagent 2 - chloroanhydride of 4,4″-terphenyldicarboxylic acid, or 2,5-bis-(4-hydroxycarbophenyl)pyrimidine, or 4-(S)-1-methylheptylhydroxycarbonyl -4′-terphenylcarboxylic acid. Temperature is 20-60 C, in the presence of pyridine. EFFECT: improved method of synthesis. 2 tbl |