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The 2-Arsaethynolate Anion: Synthesis and Reactivity Towards Heteroallenes

The synthesis and isolation of the 2‐arsaethynolate anion, AsCO−, and its subsequent reactivity towards heteroallenes is reported. Reactions with ketenes and carbodiimides afford four‐membered anionic heterocycles in formal [2+2] cycloaddition reactions. By contrast, reaction with an isocyanate yiel...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2016-07, Vol.55 (30), p.8536-8541
Main Authors: Hinz, Alexander, Goicoechea, Jose M.
Format: Article
Language:English
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Summary:The synthesis and isolation of the 2‐arsaethynolate anion, AsCO−, and its subsequent reactivity towards heteroallenes is reported. Reactions with ketenes and carbodiimides afford four‐membered anionic heterocycles in formal [2+2] cycloaddition reactions. By contrast, reaction with an isocyanate yielded a 1,4,2‐diazaarsolidine‐3,5‐dionide anion and the unprecedented cluster anions As102− and As124−. These preliminary reactivity studies hint at the enormous potential synthetic utility of this novel anion, which may be employed as an arsenide (As−) source. A look at As and Co.: Reported is the synthesis and isolation of the 2‐arsaethynolate anion, AsCO−, and its subsequent reactivity towards heteroallenes. Reactions with ketenes and carbodiimides afford four‐membered anionic heterocycles in formal [2+2] cycloaddition reactions. By contrast, reaction with an isocyanate yielded a 1,4,2‐diazaarsolidine‐3,5‐dionide anion and the unprecedented cluster anions As102− and As124−.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201602310