31459-99-1

Upstream product

• 17577-28-5 (ethoxycarbonylmethyl)triphenylphosphonium chloride 
• 1099-45-2 ethyl (triphenylphosphoranylidene)acetate 

Downstream Products

• 99790-22-4 ethyl E-4,5,7-tri-O-benzyl-2-chloro-2,3-dideoxy-D-ribo-hept-2-enonate 
• 99790-23-5 ethyl Z-4,5,7-tri-O-benzyl-2-chloro-2,3-dideoxy-D-ribo-hept-2-enonate 

Relevant academic research and scientific papers

α-hypervalent iodine functionalized phosphonium and arsonium ylides and their tandem reaction as umpolung reagents

α-Hypervalent iodine functionalized phosphonium and arsonium ylides 2 can be used as umpolung ylides to react with nucleophiles to give α-heteroatom substituted ylides 4 in good yields. The nucleophilic substitution - Wittig tandem reaction of 2 can occur smoothly to provide an efficient method for the synthesis of (Z)-α-halo-α,β-unsaturated enoates or enones 6, stereoselectively.

Process for the preparation of α-chloromethylene-triorganylphosphorane derivatives

A process for the preparation of α-chloromethylene-triorganylphosphorane derivatives I (radicals R areC-organic substituents and A stands forCNorCO-B where B is aC-organic orO-organic radical which is inert under chlorination conditions) by chlorination of phosphoranes II with chlorine, wherein the chlorination is carried out in the presence of a mineral base as hydrogen chloride acceptor and the chlorine and base are fed to the reaction mixture concurrently but separately at the rates at which they are consumed. The reaction products I are important intermediates for plant protectants.

A simple method to prepare acceptor substituted α-chloromethylenephosphoranes

α-Chlorophosphoranes can be easily prepared by the reaction of the corresponding phosphonium salts with bleaching powder in protic solvents.

Pesticidal cyclopropyl-2,4-dieneamides

The present Application discloses pesticidally active compounds of the formula (I): or a salt thereof, wherein Q is an monocyclic aromatic ring. or fused bicyclic ring system of which at least one ring is aromatic containing 9 or 10 atoms of which one may be nitrogen and the rest carbon each optionally substituted, or Q is a dihalovinyl group or a group R6 --C C-- where R6 is C1-4 alkyl, tri C1-4 alkylsilyl, halogen or hydrogen; Q1 is a 1,2-cyclopropyl ring optionally substituted by one or more groups selected from C1-3 alkyl. halo, C1-3 haloalkyl, alkynyl, or cyano; R2,R3, R4 and R5 are the same or different with at least one being hydrogen and the others being independently selected from hydrogen, halo. C1-4 alkyl or C1-4 haloalkyl; X is oxygen or sulphur; and R1 is selected from hydrogen and C1-8 hydrocarbyl optionally substituted by dioxalanyl, halo, cyano, trifluoromethyl, trifluoromethylthio or C1-6 alkoxy. their preparation, pesticidal compositions containing them and their use against pests.

Studies of Heterocyclic Enaminonitriles, XII. Reactions of 4,5-Dihydro-2-morpholino- (and -2-pyrrolidino)-3-furancarbonitriles with Dichlorocarbene

The reaction of 4,5-dihydro-2-morpholino- (and -2-pyrrolidino)-3-furancarbonitriles 1a, c, d and 2a, c, d with dichlorocarbene gave 4-(2,4-pentadienoyl)morpholines 3a, c, d and 1-(2,4-pentadienoyl)pyrrolidines 4a, c, d.Similarly, the reaction of 4,5-dihyd

Insecticidal esters

Novel esters in all possible isomeric forms of the formula STR1 wherein R is selected from the group consisting of (a) optionally unsaturated alkyl of 1 to 8 carbon atoms and optionally unsaturated cycloalkyl or cycloalkyl-alkyl of 3 to 8 carbon atoms opt