Intermolecular/intramolecular sequential aldol reaction
Atsuto Izumiseki1, Hisashi Yamamoto
1Molecular Catalyst Research Center, Chubu University , 1200 Matsumoto-cho, Kasugai 487-8501, Japan.
Journal of the American Chemical Society
|January 17, 2014
Summary
This study introduces a novel sequential aldol reaction using disilyl enol ethers. This method efficiently creates complex cyclic molecules with precise stereochemical control.
Area of Science:
- Organic Chemistry
- Synthetic Chemistry
Background:
- Aldol reactions are fundamental in organic synthesis for carbon-carbon bond formation.
- Controlling stereochemistry in aldol reactions is crucial for synthesizing complex molecules.
Purpose of the Study:
- To describe the first intermolecular/intramolecular sequential aldol reaction of disilyl enol ethers.
- To demonstrate the formation of five-, six-, and seven-membered ring products.
- To achieve high levels of relative stereochemical control in creating multiple stereocenters.
Main Methods:
- Utilizing disilyl enol ethers in a sequential aldol reaction.
- Employing conditions that promote both intermolecular and intramolecular reaction pathways.
- Analyzing reaction products to determine ring sizes and stereochemistry.
Main Results:
- Successful execution of the first intermolecular/intramolecular sequential aldol reaction with disilyl enol ethers.
- Formation of diverse cyclic products including five-, six-, and seven-membered rings.
- Generation of four or more contiguous stereogenic centers with high relative stereochemical control.
Conclusions:
- The developed sequential aldol reaction strategy is effective for constructing complex cyclic scaffolds.
- This methodology offers a powerful tool for stereoselective synthesis.
- The reaction provides access to intricate molecular architectures with predictable stereochemistry.
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