Alkoxyallenes as building blocks for organic synthesis
Reinhold Zimmer1, Hans-Ulrich Reissig
1Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany. hans.reissig@chemie.fu-berlin.de.
Chemical Society Reviews
|February 20, 2014
Summary
Alkoxyallenes are versatile C3 synthons in organic synthesis, enabling the creation of complex molecules. Lithiated alkoxyallenes are particularly useful for generating unique substitution patterns in natural product synthesis.
Area of Science:
- Organic Synthesis
- Synthetic Chemistry
Background:
- Alkoxyallenes are valuable C3 building blocks.
- Their reactivity patterns and derived synthons are key to organic synthesis.
- They can substitute for acrolein or acrolein acetals in reactions.
Purpose of the Study:
- To review the transformations and applications of alkoxyallenes.
- To highlight their use in synthesizing natural products and other relevant compounds.
- To discuss reactivity patterns and synthons derived from alkoxyallenes.
Main Methods:
- Summarization of key transformations and subsequent reactions of alkoxyallenes.
- Presentation of reactivity patterns and synthons.
- Focus on the application of lithiated alkoxyallenes with electrophiles.
Main Results:
- Alkoxyallenes serve as versatile C3 building blocks.
- Lithiated alkoxyallenes react readily with electrophiles, yielding unique substitution patterns.
- The resulting heterocycles and carbocycles are crucial intermediates.
Conclusions:
- Alkoxyallenes, especially lithiated forms, offer powerful strategies for constructing complex organic molecules.
- Their application facilitates stereoselective synthesis of natural products.
- They provide access to novel compounds with unique structural features.
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