Allenes alkoxymercuration

Considerable work on the alkoxymercuration of allenes has been reported.413 Mono- or di-mercuration products are observed depending on the substitution pattern of the allene. While allene and 1,2-butadiene afford dimercurated acetals, more highly substituted allenes produce vinylmercurials (equations 266 and 267).448 Cyclic allenes also afford vinylmercurials.449 450 Alkaline sodium borohydride reduction of these vinylmercurials produces the expected allylic ethers. 

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... 

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See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ , ]

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