The enantioselective monodeacylation of meso-1,3-diacetyl-2-imidazolidinones, by treatmenmt with the lithium salts of sterically constrained N,N -dimethylaminoalcohol gives 1-acetyl-2-imidazolidinones in 89% ee. Thc lattcr compounds serve as good precursors lor efficient chiral auxiliaries.
β¦ LIBER β¦
Base catalyzed isomerization of 1,3-diallyl-2-imidazolidinone to 1,3-bis(1-propenyl)-2-imidazolidinone
β Scribed by Mehdi H. Hussain; Eric J. Lien
- Book ID
- 112122442
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1971
- Tongue
- English
- Weight
- 171 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0022-152X
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## Abstract Characteristic ^13C^ chemical shift ranges and substituent shifts of heterocyclic ring carbon atoms have been identified for a number of 1βarylβ3βphenylβ2βthioxoβ4βimidazolidinones. ^13^CNMR spectra may be used to detect slow internal rotation about the aryl Cο£ΏNβ1 bond in compounds with