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Glyoxylic oxime ethers, diastereoselective

Indium-mediated allylation reactions of a-keto imides derived from Oppolzer s sultam proceeded in aqueous THF in good yields and excellent diastereoselectivity (Eq. 11.43).74 The indium-mediated allylation of the Oppolzer camphorsultam derivatives of glyoxylic oxime ether... [Pg.355]

Allylboronates of type 103 react with equivalent amounts of aldoximes 102 (equation 73) giving allylhydroxylamines 104 in good yields. Similar reactions of aldoximes and glyoxylate oxime ethers with allyl bromide and indium also provide hydroxylamines. Additions of substituted allyl boronates to oximes produce mixtures of stereoisomers with ratio highly dependent on the steric size of substituents in both molecules. Addition of allyltri-n-butyltin to aldoxime ether 105 (equation 74) was found to proceed with a considerable diastereoselectivity. [Pg.141]

Diastereoselective radical additions to glyoxylic oxime ethers are well established however, only one recent report describes attempted enantioselective additions using chiral Lewis acids [26], It was found that bisoxazoline ligand 9 provided the best results as illustrated in Eq. (18) and Table 3. [Pg.473]

Scheme 15 Diastereoselective allylation of glyoxylic oxime ethers... Scheme 15 Diastereoselective allylation of glyoxylic oxime ethers...

See other pages where Glyoxylic oxime ethers, diastereoselective is mentioned: [Pg.270]    [Pg.22]    [Pg.270]    [Pg.520]    [Pg.20]    [Pg.504]    [Pg.616]    [Pg.1095]    [Pg.1095]   


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Glyoxylate

Glyoxylic oxime

Glyoxylic oxime ether

Oxime ether

Oximes diastereoselective

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