CAS: 8003-34-7; Pyrethrins

上下游产品

3-(2-methyl-1-propenyl)-2,2-dimethylcyclopropanecarbonyl chloride (2)-dion-(1,4)2-Allyl-3-methyl-cyclopenten-(2)-dion-(1,4) (1S,3S)-trans-chrysanthemic acid trans-chrysanthemic acidallethrolone allethronyl glyoxylate allethronyl glyoxylate monohydrate 3-Methyl-but-2-enoic acid 3-allyl-2-methyl-4-oxo-cyclopent-2-enyl ester

专利信息

专利号:US-4413145-A
优先权日:1981-02-11
标 题 :Process for the synthesis of 3-keto-cyclopentene-5-oxy derivatives having insecticide activity
发明人：PIANCATELLI GIOVANNI; SCETTRI ARRIGO; MAURIZIO D AURIA
权利人:CONSIGLIO NAZIONALE RICERCHE
摘要:Process for the synthesis of the 3-keto-cyclopentene-5-oxy derivatives (rethrolones) having the general formula: ##STR1## wherein: R 1 is hydrogen, saturated or unsaturated C 1 -C 10 alkyl. n R 2 is saturated or unsaturated C 1 -C 10 alkyl. n R 3 is hydrogen or benzoyl characterized as having insecticide activity. n The process comprises as a basic operation the photoisomerization of a transenedicarbonylic intermediate to the corresponding cis form and then its cyclization to a rethrolone.

专利号:WO-9216499-A1
优先权日:1991-03-13
标 题 :General synthesis method by photochemical process of cyclopropanic components present in natural pyrethrines and in synthetic pyrethroids and their 1-aza-1,4,6 trianic precursors
发明人：ARMESTO VILAS DIEGO; GOMEZ GALLEGO MAR; HORSPOOL WILLIAM M; BERMEJO TORRES FERNANDO
权利人:UNIV MADRID COMPLUTENSE
摘要:The present invention relates to the synthesis of 2,2-dimethyl-3-(vinyl-2,2-bi-substituted) cyclopropanocarboxylic acids. Said acids are present in the majority of natural pyrethrines and in synthetic pyrethroids. These acids are obtained by the transposition reaction aza-di-Ï€-methane of a 1-aza-1,4,6-trianic system for which there are disclosed three different synthetic processes. Thereby, precursors are available to obtain pyrethrines and pyrethroids, obtained by a direct and simple process with a high yield.

专利号:US-5443978-A
优先权日:1993-03-11
标 题 :Chrysanthemyl diphosphate synthase, corresponding genes and use in pyrethrin synthesis
发明人：ELLENBERGER SUZANNE R; PEISER GALEN D; BELL RUSSELL N; HUSSEY JR CHARLES E; SHATTUCK-EIDENS DONNA M; SWEDLUND BRADLEY D
权利人:AGRIDYNE TECH INC
摘要:This invention provides a purified chrysanthemyl diphosphate synthase (CDS), a method for the purification of CDS from Chrysanthemum cinerariaefolium, and an amino acid sequence of the isolated CDS. Also provided is a cDNA encoding the CDS, a nucleotide sequence of the CDS gene, and a derived amino acid sequence of the encoded CDS protein. The CDS gene is useful in the enzymatic production of the natural stereospecific configuration of chrysanthemyl derivatives which are useful for the synthesis of pyrethrins, pyrethroids, derivatives thereof, as well as other classes of metabolites.

专利号:US-3978093-A
优先权日:1971-06-29
标 题:Synthesis of hydroxycyclopenten-1-ones
发明人：BUCHI GEORGE
权利人:HOFFMANN LA ROCHE
摘要:This invention relates to a process for the preparation of 2-alkenyl-4-hydroxy-3-methyl-2-cyclopenten-1-ones from the reaction product of 2,4-pentane dione and a 2-propen-or 2-propyn-1-ol derivative including intermediates therein.

专利号:US-3694472-A
优先权日:1970-05-12
标题 :Synthesis of pyrethric acid
发明人：MARTEL JACQUES; BUENDIA JEAN
权利人:ROUSSEL UCLAF
摘要:BY REACTING 3,3-DIMETHYL-2-FORMYL-1-CYCLOPROPANECARBOXYLIC (1R, 2R) acid or a salt thereof with methyl propionate under anhydrous basic conditions. A novel process for the preparation of 3,3-dimethyl-2-(2''methoxycarbonyl-trans 1''-propenyl)-1-cyclopropane carboxylic (1R, 2R) acid or d-trans pyrethric (1R,2R) acid of the formula

专利号:US-4071542-A
优先权日:1976-04-28
标 题 :Synthesis of hydroxycyclopenten-1-ones
发明人：BUCHI GEORGE
权利人:HOFFMANN LA ROCHE
摘要:This invention relates to a process for the preparation of 2-alkenyl-4-hydroxy-3-methyl-2-cyclopenten-1-ones from the reaction product of 2,4-pentane dione and a 2-propen- or 2-propyn-1-ol derivative including intermediates therein.