METHOD OF SYNTHESIS OF 3,7-DIALKYLXANTHINES Russian patent published in 1998 - IPC

Abstract RU 2114847 C1

FIELD: organic chemistry. SUBSTANCE: 3,7-dialkylxanthines are synthesized by alkylation of the corresponding 3-alkylxanthines in two-phase mixture in the presence of quaternary, ammonium and/or phosphonic base and linear simple polyester. Synthesized compounds are used in medicine as intermedium substances for synthesis of drugs. EFFECT: high yields and purity of compounds. 8 cl, 6 ex

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RU 2 114 847 C1

Authors

Gerkhard Korb

Khans-Vol'Fram Flemming

Dates

1998-07-10—Published

1993-11-09—Filed