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Tandem conjugate reduction-aldol cyclization using Stryker's reagent.

P Chiu1, C P Szeto, Z Geng

  • 1Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China. pchiu@hkucc.hku.hk

Organic Letters
|June 19, 2001
PubMed
Summary

Stryker's reagent facilitates conjugate reduction and intramolecular aldol cyclization in a single step. This efficient tandem reaction synthesizes carbocycles and beta-hydroxyketones with good yields and diastereoselectivity at low temperatures.

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Area of Science:

  • Organic Chemistry
  • Synthetic Chemistry

Background:

  • Carbocycle synthesis is crucial in medicinal chemistry.
  • Tandem reactions offer efficient synthetic routes.

Purpose of the Study:

  • To develop an efficient one-pot method for carbocycle synthesis.
  • To utilize conjugate reduction and aldol cyclization in a tandem sequence.

Main Methods:

  • Conjugate reduction using Stryker's reagent.
  • Copper enolate formation.
  • Intramolecular aldol cyclization.

Main Results:

  • Efficient one-pot synthesis of five- and six-membered carbocycles.
  • Diastereoselective formation of beta-hydroxyketones.
  • High yields achieved at low temperatures without dehydration.

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Conclusions:

  • The described tandem reaction is a powerful tool for carbocycle synthesis.
  • This method provides a diastereoselective and high-yielding route to valuable intermediates.