摘要:
1. A METHOD FOR PRODUCING C5 TO C10 POLYCHLORINATED OR POLYBROMINATED 4-KETO-ALKENOIC ACIDS, WHICH COMPRISES THE STEPS OF DIRECT COMBINED CATALYTIC HALOGENATION AND DEHYDROGENATION OF C5 TO C10 4-KETO MONOCARBOXY ALKANOIC ACIDS WITH ELEMENTAL CHLORINE OR BROMINE IN THE PRESENCE OF A CATALYST AMOUNT OF AT LEAST ONE CATION SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, ZINC, TITANIUM, COBALT, MAGNESIUM AND CALCIUM, WHEREIN THE REACTION IS INITATED AT SUBSTANTIALLY AMBIENT TEMPERATURE AND SURING SAID TIME PERIOD THE TEMPERATURE IS GRADUALLY RAISED TO A FINAL TEMPERATURE OF FROM 170*C. TO 210*C, THE REACTION BEING CONTROLLED BY THE RATE OF CHLORINE OR BROMINE SUFFICIENT TO PREVENT THE TEMPERATURE EXCEEDING 210*C.
摘要:
Process for the production of aliphatic 2,4-dienoic acids, esters and thiolesters thereof which comprises condensing an aldehyde such as dihydrocitronellal with an ester of betamethylglutaconic acid, acidification of the 1,5-diacid salt to the free 1,5-diacid and decarboxylation to the C-1 acid and novel intermediates.
摘要:
ALIPHATIC SUBSTITUTED ACIDS AND ESTERS WITH OLEFINS UNSATURATED AT C-2 AND ACETYLENIC UNSATURATED AT C-4, SYNTHESIS THEREOF, INTERMEDICATES THEREOF, DERIVATIVES THEREOF, AND THE CONTROL OF INSECTS.
摘要:
Preparation of carboxy-hydroxy conjugated diolefin polymers useful in rocket fuel and for the production of alpha-omega dicarboxy conjugated diolefins.
摘要:
ALIPHATIC ACIDS AND ESTERS HAVING A BACKBONE OF AT LEAST 12 CARBON ATOMS LOWER ALKYL AT C-3, C-7, AND C-11 UNSATURATION AT C-2,3 AND SUBSTITUTED AT C-11 OR C-7,11 WITH HYDROXY AND ESTERS AND ETHERS THEREOF WHICH ARE USEFUL ARTHROPOD MATURATION INHIBITORS.
摘要:
NOVEL 3,7,9,11-TETRAMETHYL-10-METHOXY-TRIDECA-2,7,11TRIENOIC ACID ESTERS CONTAINING A TRIPLE OR DOUBLE BOND AT THE 4-POSITION WHICH ARE USEFUL AS INSECT HORMONAL AGENTS PREPARED FROM THE CONDENSATION PRODUCT OF TIGLIC ALDEHYDE WITH METHYL PROPENYL ETHER.
摘要:
Hydrocarbon carboxylic acids, esters, alcohols and ethers containing from 12 to 17 carbon atoms in the hydrocarbon backbone chain and alkyl or alkylidene substituents at the C-7 and C-11 and/or double bond unsaturation between C-2,3 and/or C-5,6 or C6,7 or C-7,8 and/or C-9,10 or C-10,11 or C-12,13 and/or fused groupings bridging positions C-2,3, C-6,7, C-10,11 are useful arthropod maturation inhibitors.