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Participating group

As invented by Wender,196,197 a variant of the second transformation can take place if the alkene partner is substituted by a participating group such as a strained cyclopropyl or a cyclobutanone (in the case of a 1,6-diene).198 The whole process, which mainly relies on the use of rhodium or ruthenium complexes,1 9 results in the formal... [Pg.325]

Other types of nucleophiles can also react with the electrophically activated triple bond. An O-acyl group has been shown to be an excellent participating group. Interestingly, this process, which is reminiscent of the well-known palladium(ll)-mediated 1,3-migration of allylic acetates327 represents a highly efficient means for the formation of... [Pg.345]

A much more systematic approach involves the use of p-chlorides carrying non-participating groups at C-2 as is exemplified by the Wolfrom synthesis of p-isomaltose octa-acetate from 1,2,3,4-tetra-O-acetyl-p-D-glucopyranose and 3,4,6-tri-0-acetyl-2-0-nitro-p-D-glucopyranosyl chloride In this work silver carbonate was used as acid acceptor and soluble silver perchlorate was fmmd to exert valuable catalytic influence, but later the perchlorate itself was used in an application to a tiisacchar-ide s mthesis which incorporated the trityl ether modification 2 ). [Pg.40]

Results of appreciable interest have been obtained with benzylated glycosyl halides which are also devoid of participating groups at C-2. [Pg.40]


See other pages where Participating group is mentioned: [Pg.751]    [Pg.197]    [Pg.232]    [Pg.184]    [Pg.186]    [Pg.189]    [Pg.37]    [Pg.646]    [Pg.163]    [Pg.42]    [Pg.79]    [Pg.17]    [Pg.25]    [Pg.26]    [Pg.26]    [Pg.26]    [Pg.26]    [Pg.32]    [Pg.37]    [Pg.41]    [Pg.58]    [Pg.97]    [Pg.185]    [Pg.210]    [Pg.211]    [Pg.326]    [Pg.35]    [Pg.35]    [Pg.38]    [Pg.202]    [Pg.294]    [Pg.49]    [Pg.119]    [Pg.128]    [Pg.404]    [Pg.15]    [Pg.16]    [Pg.36]    [Pg.42]    [Pg.42]    [Pg.60]    [Pg.11]    [Pg.117]    [Pg.15]    [Pg.77]    [Pg.28]   
See also in sourсe #XX -- [ Pg.342 , Pg.343 , Pg.349 ]




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Acetate, neighbouring group participation

Acetoxy group, participation

Alkenes neighbouring group participation

Amides, neighboring group participation

Amines neighbouring group participate

Amines neighbouring group participation

Anchimeric assistance group participation

Anchimeric assistance neighbouring group participation

And neighboring-group participation

Aryl groups, neighbouring group participation

Carboxylate, neighbouring group participation

Carboxylic acid amid group participation

Catalysis and Neighbouring-group Participation

Chiral neighboring group participation

Conditions for and Features of SN Reactions with Neighboring Group Participation

Disconnection with Participation of Two Functional Groups

Ester hydrolysis, neighbouring group participation by carbonyl groups

Esters neighboring group participation

Esters neighbouring group participation

Ethers neighboring group participation

Ethers neighbouring group participation

Focus groups participants

Getting by with Help from Friends, or a Least Neighbors Neighboring Group Participation

Goodman, Leon, Neighboring-group Participation in Sugars

Halogenation neighbouring group participation

Illogical Disconnections with Participation of Two Groups

Increased Rate through Neighboring Group Participation

Koenigs-Knorr reaction neighboring group participation

Leaving groups neighboring group participation

Methyl groups, neighboring group participation

Neighboring Group Participation and Intramolecular Reactions

Neighboring Group Participation by Other Functional Groups

Neighboring group participation

Neighboring group participation chiral auxiliaries

Neighboring group participation decreasing

Neighboring group participation definition

Neighboring group participation for hydroxyl inversion

Neighboring group participation glycosylation

Neighboring group participation groups

Neighboring group participation, studies

Neighboring group participation. See

Neighboring group participation: in reactions

Neighboring hydroxyl group participation

Neighboring-group participation anomerization

Neighboring-group participation donors

Neighboring-group participation trichloroacetimidate

Neighboring-group participation, in sugars

Neighbouring group participation

Neighbouring group participation (or anchimeric assistance)

Neighbouring group participation assistance

Neighbouring group participation by carbonyl groups in ester hydrolysis

Participation by Functional Groups in the Glycosyl Donor

Participation by Nitrogen Groups

Participation by Sulfur Groups

Phenyl neighbouring group participation

Potentially participating group

Protecting neighboring-group participation

Proton transfer neighboring-group participation

Pummerer rearrangement participation by hydroxy groups

Rate, increased with neighboring group participation

Remote Group Participation

Remote Neighboring Group Participation

Solvolysis neighboring-group participation

Solvolysis neighbouring group participation

Stereoselectivity with neighboring group participation

Substitution reactions neighboring group participation

Sugars neighboring-group participation

Sulfide neighbouring group participation

Syntheses Substitutions and Rearrangements Involving Neighboring Group Participation of Dihetero-tricyclodecanes

Temporary participating group

Three neighboring-group participation mechanism

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