62138-41-4

Upstream product

• 56169-56-3 (1S,3R)-2,2-Dimethyl-3-((1E,3E)-penta-1,3-dienyl)-cyclopropanecarboxylic acid methyl ester 
• 186581-53-3 diazomethane 
• 26771-21-1 (1R,4R,5S)-4-hydroxy-6,6-dimethyl-3-oxabicyclo[3.1.0]hexa-2-one 
• 125408-43-7 (1R,3R)-2,2-Dimethyl-3-[(2S,4S,5R)-4-methyl-5-phenyl-3-(toluene-4-sulfonyl)-oxazolidin-2-yl]-cyclopropanecarboxylic acid methyl ester 
• 113323-08-3 (E)-3-[(2S,4S,5R)-4-Methyl-5-phenyl-3-(toluene-4-sulfonyl)-oxazolidin-2-yl]-acrylic acid methyl ester 
• 75-18-3 dimethylsulfide 
• 67000-01-5 methyltertbutyl ether 
• 5460-63-9 chrysanthemumic acid methyl ester 
• 83289-67-2 methyl trans-2,2-dimethyl-3-(hydroxymethyl)cyclopropanecarboxylate 
• 27335-35-9 (+/-)-(1R,2S)-2-(methoxycarbonyl)-3,3-dimethyl-1-cyclopropanecarboxylic acid 
• 78984-87-9 methyl 4,5-epoxy-3,3-dimethylpentanoate 
• 62222-77-9 cis-3-hydroxymethyl-2,2-dimethylcyclopropane-1-carboxylic acid lactone 
• 7796-72-7 ethyl 3,3-dimethylpent-4-enoate 
• 7796-73-8 3,3-dimethylpent-4-enoic acid 

Downstream Products

• 61898-95-1 cis,trans methyl 2,2-dimethyl-3-(2',2'-dichlorovinyl)-cyclopropanecarboxylate 
• 14250-96-5 2-methyl-2-pentenal 
• 769945-93-9 methyl trans-2,2-dimethyl-3-(2'-formyl-1'-propenyl)-cyclopropanecarboxylate 
• 541-47-9 3-Methylbutenoic acid 
• 60310-82-9 3-(2-chlorovinyl)-2,2-dimethylcyclopropane-carboxylic acid 
• 865434-64-6 methyl trans-2,2-dimethyl-3-[(1E)-3-phenyl-2-formyl-1-propenyl]cyclopropanecarboxylate 
• 865434-68-0 methyl trans-2,2-dimethyl-3-[(1E)-2-formyl-2-phenylethenyl]cyclopropanecarboxylate 

Relevant academic research and scientific papers

PROCESS FOR PRODUCTION OF FORMYLCYCLOPROPANECARBOXYLIC ESTERS

There is provided a production method of formylcyclopropanecarboxylate compound of formula (2): wherein R1 and R2 are as defined below, ???which comprises reacting ???a cyclopropanecarboxylate compound of formula (1): wherein and R1 represent a linear, branched or cyclic alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group, ???R2 represents a hydrogen atom or a methyl group, with at least one oxidizer selected from the group consisting of hypohalite, N-halosuccinimide, a trichloroisocyanuric acid, and iodine, ???in the presence of a nitroxy radical compound.

Novel synthesis of (d,l) trans-chrysanthemic acid involving a β-diketone fragmentation

Methyl (d,l) trans-chrysanthemate as well as its cis-diastereoisomer have been prepared from dimethyl dimedone, one of their isomers, in a few steps and with complete control of the relative stereochemistry.

Ester Compounds, methods of controlling a pest and uses of the ester compounds

The present invention provides ester compounds, methods of controlling a pest and uses of the ester compounds. The ester compounds are encompassed by formula (1): wherein R represents a C1 to C3 alkyl group. The methods of controlling a pest entail applying the ester compound encompassed by formula (1) to a pest or to a habitat of the pest or both. The uses of the ester compounds encompassed by formula (1) are for controlling pests.

PSEUDOESTERES Y DERIVADOS XXXIII. SINTESIS DE COMPUESTOS CICLOPROPANICOS POR FOTOLISIS DE PIRAZOLINAS OBTENIDAS POR CICLOADICION 1,3-DIPOLAR A LA 5-METOXI-2(5H)-FURANONA

By cycloaddition of 2-diazopropane to 5-methoxy-2(5H)-furanone (1) two regioisomeric 1-pyrazolines 3 and 4 are stereospecifically obtained.Both isomers give by photolysis, as major or sole compound, the same cyclopropane derivative 7.Hydrolysis of the bicyclic compound 7, followed by esterification, leads to cis open chain derivatives, which are appropiately functionalized for the synthesis of pyrethroids. a similar set of reactions, using diazomethane-d2 as dipolarophile, affords selectively deuterated cyclopropane derivatives.Palabras clave: Cicloadicion 1,3-dipolar, pirazolinas, fotolisis, ciclopropanos, piretroides.

ALLYLIC STEREOCENTRE DIRECTED CYCLOPROPANATION. A NEW HIGHLY ENANTIOSELECTIVE SYNTHESIS OF HEMICARONIC ALDEHYDE

isopropyledenetriphenylphosphorane reacts with oxazolidine 4 with excellent ?-face selectivity.The title compound is obtained in high optical purity after removal of the chiral auxiliary.

A SYNTHESIS OF TRANS- AND CIS-CARONALDEHYDES

A preparation of trans- and cis-caronaldehyde derivatives is described by employing iodolactonization reaction as a key step.Investigation is also carried out to establish an asymmetric synthesis by employing the same methodology which allows diastereoselective formation of optically active intermediates in both enantiomeric forms from a single precursor though the degree of asymmetric induction is found to be less satisfactory.

SYNTHESE STEREO ET ENANTIOSELECTIVE PAR L'INTERMEDIAIRE DE COMPLEXES DU FER DE DERIVES CHRYSANTHEMIQUES DIENIQUES ET D'ALDEHYDES HEMICARONIQUES CIS ET TRANS.

A stereo and enantioselective synthesis of cis and trans hemicaronic aldehydes, starting from the optically active sorbic aldehyde-irontricarbonyl complex, is described.