7509-48-0

Upstream product

• 685-87-0 Diethyl 2-bromomalonate 
• 603-35-0 triphenylphosphine 
• 105-53-3 diethyl malonate 
• 5256-74-6 1,3-diethyl 2-diazopropanedioate 
• 541-41-3 chloroformic acid ethyl ester 
• 1099-45-2 ethyl (triphenylphosphoranylidene)acetate 
• 1034-39-5 dibromotriphenylphosphorane 

Downstream Products

• 20521-81-7 (2,2-Diphenyl-vinyliden)-malonsaeure-diethylester 
• 81113-21-5 diethyl 3,3-diphenylprop-2-ene-1,1-dicarboxylate 
• 83324-99-6 4-tert-butylimino-3,3-diethoxycarbonyl-1-methyl-2-tosylimino-azetidine 
• 3878-45-3 triphenylphosphine sulfide 
• 3158-46-1 diethyl 2-oxo-propanedioate 2,4-dinitrophenylhydrazone 
• 83324-97-4 1-Cyclohexyl-2-[(E)-cyclohexylimino]-4-[(E)-4-nitro-phenylimino]-azetidine-3,3-dicarboxylic acid diethyl ester 

Relevant academic research and scientific papers

3-(Triphenylphosphoranylidene)-pentane-2,4-dione and diethyl 2-(triphenylphosphoranylidene)-malonate

The title ylides, 3-(triphenylphosphoranylidene)pentane-2,4-dione, C 23H21O2P, (I), and diethyl 2- (triphenylphosphoranylidene)malonate, C25H25O 4P, (II), differ in the conformations adopte

In situgeneration of highly reactive allenes from nitrocyclopropanes: controllable synthesis of enynes and enesters

A new and efficient strategy for ring-opening reactions of nitrocyclopropanes is developed for the first time for the divergent synthesis of enynes and enestersvia in situgenerated highly reactive electron-deficient intermediate allenes. Controllable appr

The value of 2JP–CO as a diagnostic parameter for the structure and thermal reactivity of carbonyl-stabilised phosphonium ylides

A survey of 20 carbonyl-stabilised phosphonium ylides with recently reported X-ray structures shows a strong correlation between the C[dbnd]P to C[dbnd]O torsion angle and the value of 2JP–CO, with high values being associated with an anti configuration and low with syn. Seven new X-ray structural determinations are reported, several for types of ylide not crystallographically characterised before, and these also conform to this pattern. The value of 2JP–CO is then correlated with whether or not thermal extrusion of Ph3PO occurs to give alkynes for over 200 ylides and an empirical rule developed that the extrusion never occurs for ylides where this value is > 11 Hz. This is used to rationalise the anomalous behaviour of some trioxo ylides and cyclic ylides, two of which afford cycloalkynes, isolated after rearrangement as the isomeric 1,3-dienes. The rule also holds for a family of novel highly fluorinated ylides which afford fluorinated alkynes in good yield upon flash vacuum pyrolysis.

Comparison of conformations of diesters of stabilized phosphonium ylides in solution and in the crystal

Computed bond lengths and angles of methyl ethyl and dimethyl triphenyl phosphonium ylidic diesters, 1b, c, respectively, are similar to those in the crystal, as for the diethyl ester, 1a, where both acyl oxygens are anti to phosphorus. The 1H

Zinc promoted facile method for the acylation of ylides at α-carbon

Stabilised triphenylphosphonium ylides are acylated at the α-carbon with different acyl groups using zinc.

An organometallic analogue of the Wittig reaction. A one-pot reaction for C=C bond formation catalyzed by a molybdenum complex

An olefinic bond is formed by the one-pot reaction of an aldehyde, diazoacetate and triphenylphosphine in the presence of a catalytic amount of MoO2(S2CNEt2)2.The mechanism of this reaction is discussed.