Ethers, vinyl alkoxymercuration

Glycals, for example D-glucal (23), being vinyl ethers are susceptible to acid catalysed additions of alcohols which result in the formation of 2-deoxyglycosides, but elimination reactions accompany additions of this type 86) go such products are better prepared by way of halogen adducts or by the alkoxymercuration reaction (see below). On the other hand, the addition procedure can be more suitable than the alcoholysis... 

The alkoxymercuration of conjugated dienols does not appear to have been examined, while allenic alcohols provide unsaturated ethers (equation 269)452 The alkoxymercuration of alkynes generally provides vinylic ethers453 or acetals454 depending on the reaction conditions (equations 270 and 271). Only catalytic amounts of mercuiy salts are generally... 

Ethers are compounds that have two organic groups bonded to the same oxygen atom, ROR. The organic groups can be alkyl, vinylic, or aryl, and the oxygen atom can be in a ring or in an open chain. Ethers are prepared by either the Williamson ether synthesis, which involves Sf t2 reaction of an alkoxide ion with a primary alkyl halide, or the alkoxymercuration reaction, which involves Markovnikov addition of an alcohol to an alkene. 

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