331258-90-3

Upstream product

• 1024-41-5 benzyl tosylate 
• 63995-75-5 sodium 3-(diphenylphosphanyl)benzenesulfonate 
• 100-39-0 benzyl bromide 

Downstream Products

• 72777-78-7 (3E)-1,4-diphenyl-1,3-butadiene 
• 112998-09-1 sodium 3-(diphenylphosphinyl)benzenesulfonate 
• 14213-84-4 2-phenylethylstyrene 
• 58-72-0 Triphenylethylene 
• 3112-03-6 4-acetylstilbene 
• 4714-21-0 4-methylstilbene 
• 1694-20-8 4-nitrostilbene 
• 588-59-0 stilbene 
• 1694-19-5 p-methoxystilbene 
• 4714-24-3 1-bromo-4-styrylbenzene 
• 1694-20-8 trans-4-nitrostilbene 
• 6624-53-9 (Z)-1-nitro-4-(2-phenylethenyl)-benzene 
• 645-49-8 cis-stilben 
• 103-30-0 (E)-1,2-diphenyl-ethene 

Relevant academic research and scientific papers

ZWITTERIONIC PHOSPHONIUM SALTS

A zwitterionic phosphonium salt of Formula I: wherein n is 0 or 1; R is H or SO3-; R' is selected from the group consisting of C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, C3-C10 cycloalkyl, phenyl, substituted phenyl, benzyl and C1-C10 alkoxycarbonyl; R' is CX3 when n is O; and X is selected from the group consisting of F, Cl, Br and I. The zwitterionic phosphonium salts are useful reagents for the preparation of alkenes and acetals from the corresponding aldehyde.

Zwitterionic phosphonium sulfonates as easily phase-separable ion-tagged wittig reagents

(Chemical Equation Presented) Zwitterionic phosphonium sulfonates 3, conveniently derived from TPPMS (1), can be used as Wittig reagents in solution. The excess reagents and byproduct TPPMSO (6) can be easily separated from the product alkenes by simple precipitation with a less polar solvent. The alkenes thus obtained were often sufficiently pure without chromatographic purification. A one-pot protocol for the synthesis of α,β-unsaturated esters has been developed and appears to be convenient.