摘要:
1. A METHOD OF PRODUCING AN ALCOHOL OF THE FURAN SERIES HAVING THE FORMULA:
2-(HO-CH2-),5-R-FURAN
WHEREIN R IS H, CH3, CH2OH, CL OR BR, SAID METHOD COMPRISING FEEDING AN AQUEOUS SOLUTION OF AN ALDEHYDE OF THE FURAN SERIES HAVING THE FORMULA:
2-(H-CO-),5-R-FURAN
WHEREIN R IS DEFINED ABOVE AND CONTAINING FROM 2 TO 5% BY WT. OF AN INORGANIC OR ORGANIC ACID ONTO AN AMALGAM OF AN ALKALI METAL OF 0.1-3.0 N CONCENTRATION AT A RATE PROVIDING DECOMPOSITION OF THE AMALGAM OF FROM 800 TO 300 A./M.2 WHILE SATURATING THE ALDEHYDE SOLUTION WITH CARBON DIOXIDE TO NEUTRALIZE ALKALI DEVELOPED DURING AMALGAM DECOMPOSITON.
摘要:
ESTERS OF OXYTETRACYCLINES INCLUDING O12A-ESTERS OF OXYTETRACYCLINE, A-AND B-6-DEOXY-OXYTETRACYCLINE, 6-DEMETHYL6-DEOXY-6-METHYLENOXYTETRACYCLINE, THE MERCAPTAN ADDUCTS OF THE LATTER COMPOUND AND ACID ADDITION AND METAL SALTS OF SAID ESTERS AND THEIR UTILITY AS ANTIBACTERIAL AGENTS AND AS INTERMEDIATES IN THE PREPARATION OF OTHER BIOLOGICALLY ACTIVE COMPOUNDS.
摘要:
THERMAL CONDENSATION OF 5-BENZYLFURAN WITH AN ALKYL PROPIOLATE TO FORM AN INTERMEDITE BICYCLIC COMPOUND WHICH, BY REVERSE REACTION AND SUBSEQUENT REDUCTION OF THE ESTER GROUP, YIELDS 5-BENZYL-3-FURYLMETHANOL, USEFUL AS INTERMEDIATE IN THE MANUFACTURE OF PYRETHROID INSECTICIDES.
摘要:
Phenoxy-aminopropanol derivatives of the formula
WHEREIN R1 is furylmethyl, thienylmethyl, tetrahydrofurylmethyl, pyridylmethyl, or a group of the formula R-X-A-, wherein R is C1 4 alkyl, C1 4 alkenyl, phenyl or benzyl, X is -O- or -S-, and A is C1 4 alkylene or -CH2C*CCH2-; -N(R2)(R3) is C1 4 alkylamino, dialkylamino (each alkyl being at most four carbon atoms), cyclohexylamino, piperidino, morpholino or 4-methyl-1piperazinyl; and R4 is H, CH3 or Cl, and pharmaceutically acceptable acid addition salts thereof, are useful as Beta adrenergic blocking agents.
摘要翻译:式WHERE R1的苯氧基 - 氨基丙醇衍生物是呋喃基甲基,噻吩基甲基,四氢呋喃基甲基,吡啶基甲基或式RXA-的基团,其中R是C1-4烷基,C1-4链烯基,苯基或苄基,X是-O-或 -S-,A为C 1-4亚烷基或-CH 2 C 3 OCH 3 - ; -N(R 2)(R 3)是C 1-4烷基氨基,二烷基氨基(各烷基至多4个碳原子),环己基氨基,哌啶子基,吗啉代或4-甲基-1-哌嗪基; 并且R 4为H,CH 3或Cl及其药学上可接受的酸加成盐,可用作β-肾上腺素能阻断剂。
摘要:
A NOVEL PROCESS FOR PRODUCING 5-SUBSTITUTED 3-FUROIC ACID DERIVATIVES USEFUL AS INTERMEDIATES IN A SYNTHESIS OF INSECTICIDES. FOR EXAMPLE 5-BENZYL-3-FUROIC ACID IS PRODUCED BY REACTING ETHYLENE KETAL OF ETHYL LEVULINATE WITH ETHYL FORMATE IN THE PRESENCE OF SODIUM HYDRIDE TO YIELD ETHYLENE KETAL OF ETHYL A-FORMYL-LEVULINATE, RING-CLOSING THE RESULTANT ETHYLENE KETAL OF ETHYL A-FORMYL-LEVULINATE BY CONTACTING IT WITH HYDROCHLORIC ACID TO YIELD ETHYL 5-METHYL-3FUROATE, BROMINATING THE RESULTANT ETHYL 5-METHYL-3FUROATE TO YIELD ETHYL 2-BROMO-5-BROMOMETHYL-3-FUROATE, REACTING THE RESULTANT ETHYL 2 - BROMO-5-BROMO-METHYL-3FUROATE WITH BENZENE IN THE PRESENCE OF ALUMINUM CHLORIDE TO YIELD ETHYL 2-BROMO-5-BENZYL-3-FUROATE AND, AFTER HYDROLYZING THE ESTER TO AN ACID, REACTING THE RESULTANT 2BROMO - 5 - BENZYL - 3-FUROIC ACID WITH ZINC POWDER IN AN AQUEOUS AMMONIA SOLUTION TO YIELD 5-BENZYL-3-FUROIC ACID.
摘要:
A cyclopropanecarboxylate represented by the formula,
WHEREIN R1 is hydrogen atom, methyl or ethyl group, R2 is methyl, ethyl, 2-methyl-1-propenyl or 2-methoxycarbonyl-1propenyl group when R1 is hydrogen atom, or R2 is methyl or ethyl group when R1 is methyl or ethyl group, and R3 and R4 are respectively hydrogen atom, methyl or ethyl group, provided that the case where R1, R3 and R4 are simultaneously hydrogen atom is excluded, R5 is a lower alkynyl or a lower alkenyl group, R6 is a lower alkynyl, a lower alkenyl or a lower alkoxyalkyl group, R7 is hydrogen atom, a lower alkyl or a lower alkoxy group or a halogen atom, n is 1 or 2, and X is oxygen or sulfur atom, which is useful as an active ingredient of insecticides.