84370-13-8

Upstream product

• 29541-98-8 pentylidenetriphenylphosphorane 
• 21406-61-1 pentyltriphenylphosphonium bromide 
• 98-88-4 benzoyl chloride 
• 82294-35-7 Triphenyl-(1-trimethylsilanyl-pentylidene)-λ⁵-phosphane 
• 93-97-0 benzoic acid anhydride 

Downstream Products

• 84370-23-0 Trifluoro-methanesulfonatetriphenyl-{1-[1-phenyl-1-trifluoromethanesulfonyloxy-meth-(Z)-ylidene]-pentyl}-phosphonium; 
• 354529-99-0 1-phenyl-2-butyl-2-propen-1-one 

Relevant academic research and scientific papers

Transition-Metal-Free Reductive Deoxygenative Olefination with CO2

A new transition-metal-free reductive deoxygenative olefination of phosphorus ylides with CO2, an abundant and sustainable C1 chemical feedstock, is described. This catalytic CO2 fixation afforded β-unsubstituted acrylates and vinyl ketones in good yields with broad scope and good functional group tolerance under mild reaction conditions. Cost-effective and easily handled polymethylhydrosiloxane was used as a reductant. Bis(silyl)acetal was proved to be the key intermediate in this reductive functionalization of CO2.

Synthesis and reactions of [1-(trialkylsilyl)alkylidene]triphenylphosphoranes

Alkylidenetriphenylphosphoranes 1 react with trialkyl halosilanes 2 to afford silylated alkylidenephosphoranes 5, which can be converted to acylated alkylidenephosphoranes 8 and 10 by trimethylsilyl carboxylates 6 or carboxylic anhydrides 10. Bis(acylalkylidenephosphoranes) 13-15 are available from 5 and bis(trimethylsilyl) dicarboxylates 12 or cyclic or polymeric anhydrides 16, 17.