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[3 + 2]-Annulation Reactions of Chiral Allylsilanes and Chiral Aldehydes. Studies on the Synthesis of Bis-tetrahydrofuran Substructures of Annonaceous Acetogenins

✍ Scribed by Mertz, Eric; Tinsley, Jennifer M.; Roush, William R.


Book ID
125543898
Publisher
American Chemical Society
Year
2005
Tongue
English
Weight
926 KB
Volume
70
Category
Article
ISSN
0022-3263

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Quantum chemical modeling of chiral cata
✍ Vesa Nevalainen πŸ“‚ Article πŸ“… 1994 πŸ› Elsevier Science 🌐 English βš– 502 KB

Properties of Lewis acidic oxazaborolidines 1 were investigated by means of ab initio MO methods (RHF, Ksulfonylated 1,3,2-oxazaborolidine 1' as a model). Energies of the coordination of aldehydes to 1 were estimated by using formaldehyde and acrolein adducts of 1' as models. Energies (MP2/6-31G//6-