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Efficient acyclic stereocontrol using the tethered aminohydroxylation reaction
Timothy J Donohoe1, Peter D Johnson, Richard J Pye
1Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, UK. tiothy.donohoe@chem.ox.ac.uk
Organic Letters
|July 17, 2004
Summary
Tethered aminohydroxylation of allylic carbamates provides a stereospecific and stereoselective synthesis. This method achieves high stereocontrol, particularly for 1,1-disubstituted substrates in oxidation reactions.
Area of Science:
- Organic Chemistry
- Asymmetric Synthesis
- Catalysis
Background:
- Tethered aminohydroxylation (TA) is a valuable synthetic strategy.
- Controlling stereochemistry in the functionalization of allylic systems remains a challenge.
Purpose of the Study:
- To develop a stereospecific and stereoselective tethered aminohydroxylation for acyclic allylic carbamates.
- To investigate the level of stereocontrol achievable, especially with challenging substrates.
Main Methods:
- Employing a tethered aminohydroxylation reaction on acyclic allylic carbamates.
- Utilizing oxidation conditions to induce stereoselectivity.
Main Results:
- Successful achievement of tethered aminohydroxylation with high stereospecificity and stereoselectivity.
- Observation of unusually high stereocontrol during the oxidation of 1,1-disubstituted substrates.
Conclusions:
- The developed TA method is effective for synthesizing stereodefined acyclic allylic carbamates.
- The reaction demonstrates excellent stereoselectivity, offering a powerful tool for complex molecule synthesis.