Ring Expansion/Homologation−Aldehyde Condensation Cascade Usingtert-Trihalomethylcarbinols

J. R. Falck,Anyu He,L. Manmohan Reddy,Abhijit Kundu,Deb K. Barma,A. Bandyopadhyay,Sukanta Kamila,Radha Akella,Romain Bejot,Charles Mioskowski

ORGANIC LETTERS（2006）

引用 31|浏览16

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摘要

Treatment of cyclic tert-trihalomethylcarbinols with CrCl2 in THF/HMPA in the presence of aryl or aliphatic aldehydes initiates a cascade sequence of one carbon ring expansion-olefination affording conjugated exocyclic ketones. Acyclic tert-trihalomethylcarbinols undergo a comparable cascade of one carbon homologation-olefination.

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methanol

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