36839-94-8

Upstream product

• 375-72-4 Nonafluorobutanesulfonyl fluoride 
• 19980-43-9 1-(trimethylsilyloxy)cyclopentene 

Downstream Products

• 109432-85-1 [(E)-2-(cyclopent-1-en-1-yl)ethenyl]benzene 
• 110845-85-7 4-(1-cyclopenten-1-yl)-3(E)-buten-2-one 
• 1313885-32-3 6-cyclopentenyl-1-phenylhex-5-yn-1-one 
• 1313885-37-8 2-(3-cyclopentenylprop-2-ynyl)cyclohexanone 
• 54526-80-6 methyl (E)-3-(1-cyclopenten-1-yl)-2-propenoate 

Relevant academic research and scientific papers

Preparation of Vinylsulfonates from Trimethylsilyl Enol Ethers - Synthetic Consequences of a Remarkable Cation Effect

The C/O-selectivity observed in the sulfonylation of the enolate ion 5 with benzenesulfonyl fluoride depends strongly on the nature of the gegenion.Li+ yields the β-oxosulfone 3 by C-sulfonylation exclusively.The fraction of O-sulfonylation is increased with the size of the cation, yielding the vinylsulfonates 6b exclusively in the presence of Cs+ or quaternary ammonium ions.From this behaviour a regio- and stereoselective synthesis of vinylsulfonates is developed starting from the corresponding trimethylsilyl enol ethers.