Silenes as novel synthetic reagents: identification of a practical method for silene generation and trapping
作者:Malcolm B. Berry、Russell J. Griffiths、Mahesh J. Sanganee、Patrick G. Steel、Daniel K. Whelligan
DOI:10.1039/b404166f
日期:——
The elucidation of a robust and reliable sequence for the generation of highly reactive transient silenes from simple aldehydes is described. The key step involves a silyl-modified Peterson olefination which critically depends on the presence of a sub-stoichiometric amount of soluble lithium salts (LiBr).
Hosomi–Sakurai reactions of silacyclic allyl silanes
作者:Jonathan D. Sellars、Patrick G. Steel、Michael J. Turner
DOI:10.1039/b602642g
日期:——
Substituted silacyclohexenes, generated through silene-diene [4 + 2] cycloaddition reactions, undergo Lewis acid promoted Sakurai type reactions with acetals to afford, following oxidation of the resultant fluorosilane, 1,4-diols with four contiguous chiral centres.
Silenes in organic synthesis: a short synthesis of prelactone B
作者:Jonathan D. Sellars、Patrick G. Steel
DOI:10.1039/b608989e
日期:——
A sequence involving dihydroxylation and acid induced fragmentation of silene generated silacyclohexenes represents the key step in a concise synthetic route to β-hydroxy-δ-lactones.
Application of silacyclic allylsilanes to the synthesis of β-hydroxy-δ-lactones: synthesis of Prelactone B
作者:Jonathan D. Sellars、Patrick G. Steel
DOI:10.1016/j.tet.2009.01.116
日期:2009.7
Silacyclic allylsilanes generated through a silene-diene Diels-Alder cycloaddition represent versatile bifunctional reagents for organic synthesis. This is demonstrated in a short stereocontrolled synthesis of (+/-)-Prelactone B. (C) 2009 Elsevier Ltd. All rights reserved.
Silenes as novel synthetic reagents: synthesis of diols and lactones from simple alkyldienes
作者:Malcolm B. Berry、Russell J. Griffiths、Mahesh J. Sanganee、Patrick G. Steel、Daniel K. Whelligan
DOI:10.1016/j.tetlet.2003.10.056
日期:2003.12
Aryl substituted silenes can be generated by a modified Peterson olefination reaction and trapped in situ to afford silacycles with high diastereoselectivity. These silacycles can be elaborated by 'Fleming-Tamao' type oxidation to provide access to functionalized diols and lactones. (C) 2003 Elsevier Ltd. All rights reserved.