Taming Metal/Fluorine Carbenoids.
Sebastian Molitor1, Kai-Stephan Feichtner1,2, Viktoria H Gessner1,2
1Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|December 2, 2016
Summary
Researchers stabilized highly reactive fluorine carbenoids, enabling their isolation and study. Sodium and potassium compounds show remarkable stability, offering new possibilities for organic synthesis and fluorine chemistry.
Area of Science:
- Organic Chemistry
- Organometallic Chemistry
- Fluorine Chemistry
Background:
- Metal/fluorine (M/F) carbenoids are highly reactive and difficult to handle.
- Existing methods for M/F carbenoid stabilization are limited.
Purpose of the Study:
- To stabilize and isolate M/F carbenoids.
- To investigate the factors influencing M/F carbenoid stability and reactivity.
- To explore their synthetic applications.
Main Methods:
- Synthesis and isolation of M/F carbenoids (M=Li, Na, K).
- Spectroscopic analysis (NMR, IR).
- Density Functional Theory (DFT) calculations.
- Reactivity studies involving addition to thioketones.
Main Results:
- Isolation of room-temperature-stable fluorine carbenoids (Na, K compounds).
- Spectroscopic and DFT studies confirm carbenoid character and M-F-C interactions.
- Carbenoid stability correlates with M-F interaction strength, with Li compounds being more reactive.
- Metal identity influences reactivity and selectivity in addition reactions.
Conclusions:
- Room-temperature-stable fluorine carbenoids can be isolated and handled.
- M-F bond strength dictates carbenoid stability and reactivity.
- This work opens new avenues for utilizing M/F carbenoids in organic synthesis.
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