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β¦ LIBER β¦
3-(N,N-Diacylamino)quinazolin-4(3H)-ones as enantioselective acylating agents for amines
β Scribed by Abdullah G Al-Sehemi; Robert S Atkinson; John Fawcett; David R Russell
- Book ID
- 104210031
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- French
- Weight
- 106 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
The presence of an N-N chiral axis in a 3-(N-benzoyl-N-isobutanoyl)aminoquinazolin-4(3H)-one (DAQ) bearing a chiral substituent in the 2-position of the quinazolinone allows separation of two enantiopure diastereoisomers; one of these diastereoisomers reacts with racemic 2-methylpiperidine to give (R)(+)-1-benzoyl-2-methylpiperidine (95% ee) and (S)-2-methylpiperidine (91% ee) even using stoichiometric quantities of reagents (1 equiv. DAQ: 2 equiv. amine).
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