21174-45-8

Basic information

• Product Name: ethoxymethylcarbenium
• CAS NO: 21174-45-8
• Molecular Weight: 73.1149
• Mol File: 21174-45-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: ethoxymethylcarbenium(CAS DataBase Reference)
• NIST Chemistry Reference: ethoxymethylcarbenium(21174-45-8)
• EPA Substance Registry System: ethoxymethylcarbenium(21174-45-8)

Safety Data

• Hazardous Substances Data: 21174-45-8(Hazardous Substances Data)

Upstream product

• 462-95-3 formaldehyde diethyl acetal 
• 105-57-7 diethyl acetal 

Downstream Products

• 74-85-1 ethene 
• 475503-68-5 Ethylidene-oxonium 

Relevant articles and documents

Formation and transformations of cations obtained from 1,1-dialkoxyalkanes in fluorosulfonic acid

The reaction of 1,1-dialkoxyalkanes with fluorosulfonic acid at -75 deg C leads to the formation of alkoxycarbenium ions and protonated alcohols.The methoxy- and ethoxymethylcarbenium ions are stable at room temperature.Methoxycarbenium undergoes further reactions at -5 deg C.At -15 deg C ethoxycarbenium is converted by a 1,3-hydride shift into methoxymethylcarbenium.At this temperature the latter reacts with ethanol, forming ethoxymethylcarbenium and methanol.At -45 deg C isopropoxycarbenium is converted also by a 1,3-hydride shift into methoxydimethylcarbenium.Methyl, ethyl, and isopropyl alcohols are converted into the corresponding fluorosulfonic esters.