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- W2471304763 endingPage "2076" @default.
- W2471304763 startingPage "2061" @default.
- W2471304763 abstract "Abstract α‐Halomethyllithium carbenoids are useful homologating reagents which – reacting under proper reaction conditions as carbanions – enable the installation via nucleophilic addition of a reactive halomethyl fragment onto a preformed carbon–heteroatom bond. The pronounced thermolability represented – since seminal studies by Köbrich – the Achilles' heel of these reagents: the use of Barbier‐type methodologies (i.e., the electrophile should be present in the reaction mixture prior to the formation of the carbenoid) was pivotal in order to suppress decomposition through α‐elimination processes. Nowadays, the use of low temperatures (−78 °C) guarantees reliable procedures and, significantly, the employment of microreactor technologies allows external trapping to be performed even at higher temperatures as reported by Luisi. We will discuss the α‐halomethyllithium‐mediated homologations of a series of carbon electrophiles such as carbonyl compounds, imines, esters, Weinreb amides, and isocyanates. image" @default.
- W2471304763 created "2016-07-22" @default.
- W2471304763 creator A5007946582 @default.
- W2471304763 creator A5028086517 @default.
- W2471304763 creator A5037254778 @default.
- W2471304763 date "2016-07-06" @default.
- W2471304763 modified "2023-10-07" @default.
- W2471304763 title "Lithium Halomethylcarbenoids: Preparation and Use in the Homologation of Carbon Electrophiles" @default.
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