FIELD: organic chemistry. SUBSTANCE: product: alkyl esters of oxy- or thio-derivatives 4-(lower alkyl)-2,6-bis-(trifluoromethyl)-(dihydro- or tetrahydro)-pyridine-3,5-dicarboxylic acids. Reagent 1: piperidine of the formula given in description . Reagent 2: hydrogen chloride or hydrochloric acid. Reaction conditions: concentration of hydrochloric acid is 30%, not less, at 60-80 C, molar ratio of hydrogen chloride or hydrochloric acid to piperidine is 5-15. Synthesized compounds were used in agriculture. EFFECT: improved method of synthesis. 2 cl, 3 tbl
| Title |
Year |
Author |
Number |
| METHOD OF SYNTHESIS OF S,S-DI(LOWER ALKYL)-ESTER OF 4-(LOWER ALKYL)-2,6-BIS- (TRIFLUOROMETHYL)-2,6-DIHYDROXY-3,5-PIPERIDINE DICARBOTHIOACID |
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|
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1991 |
- Khelen Li Dzhanoski[Us]
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