Abstract
The purpose of this review article is to illustrate synthetic aspects of functionalized phosphorus derivatives containing an oximo moiety at the beta-position. First section will be focused on the synthesis of phosphine oxides, phosphonates or phosphonium salts containing an oxime group. The synthesis of these derivatives comprises the carbon – phosphorus single bond construction by reaction of haloximes with phosphorus derivatives, nucleophilic addition of phosphorus reagents to carbonyl compounds, or nucleophilic addition of phosphorus reagents to nitro olefins. This section will also concentrate on the most practical routes for the synthesis of the target compounds, through carbon – nitrogen double bond formation, which are as follows: condensation processes of carbonyl compounds and hydroxylamine derivatives or addition of hydroxylamines to allenes or alkynes. The preparative use of beta-oximo phosphorus derivatives as synthetic intermediates will be discussed in a second section, comprising olefination reaction, oxidation of oximes to nitrile oxides by reaction at the C-N double bond of the oxime moiety, oxidation of these substrates to nitrosoalkenes, reduction to the corresponding hydroxylamines and some reactions at the hydroxyl group of the hydroxyimino moiety.
Keywords: β-Hydroxyimino phosphorus derivatives, α-haloximes, nitro olefins, nitrile oxides, nitrosoalkenes, Condensation Reaction, Olefination Reaction, Oxime Reductions, Nitrosoalkene Formation, Cyclization Reactions, Dehydratation of Oximes, O-Functionalization Reactions, diphenyl phosphine oxide (HPOPh2), fluoroalkyl p-toluenesulfonyl ketoximes, Grignard reagents
Current Organic Chemistry
Title: β-Hydroxyimino Phosphorus Derivatives. An Efficient Tool in Organic Synthesis
Volume: 15 Issue: 10
Author(s): Jesus M. de los Santos, Javier Vicario, Concepcion Alonso and Francisco Palacios
Affiliation:
Keywords: β-Hydroxyimino phosphorus derivatives, α-haloximes, nitro olefins, nitrile oxides, nitrosoalkenes, Condensation Reaction, Olefination Reaction, Oxime Reductions, Nitrosoalkene Formation, Cyclization Reactions, Dehydratation of Oximes, O-Functionalization Reactions, diphenyl phosphine oxide (HPOPh2), fluoroalkyl p-toluenesulfonyl ketoximes, Grignard reagents
Abstract: The purpose of this review article is to illustrate synthetic aspects of functionalized phosphorus derivatives containing an oximo moiety at the beta-position. First section will be focused on the synthesis of phosphine oxides, phosphonates or phosphonium salts containing an oxime group. The synthesis of these derivatives comprises the carbon – phosphorus single bond construction by reaction of haloximes with phosphorus derivatives, nucleophilic addition of phosphorus reagents to carbonyl compounds, or nucleophilic addition of phosphorus reagents to nitro olefins. This section will also concentrate on the most practical routes for the synthesis of the target compounds, through carbon – nitrogen double bond formation, which are as follows: condensation processes of carbonyl compounds and hydroxylamine derivatives or addition of hydroxylamines to allenes or alkynes. The preparative use of beta-oximo phosphorus derivatives as synthetic intermediates will be discussed in a second section, comprising olefination reaction, oxidation of oximes to nitrile oxides by reaction at the C-N double bond of the oxime moiety, oxidation of these substrates to nitrosoalkenes, reduction to the corresponding hydroxylamines and some reactions at the hydroxyl group of the hydroxyimino moiety.
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Cite this article as:
M. de los Santos Jesus, Vicario Javier, Alonso Concepcion and Palacios Francisco, β-Hydroxyimino Phosphorus Derivatives. An Efficient Tool in Organic Synthesis, Current Organic Chemistry 2011; 15 (10) . https://dx.doi.org/10.2174/138527211795378146
DOI https://dx.doi.org/10.2174/138527211795378146 |
Print ISSN 1385-2728 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5348 |
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