Abstract
The NH and α-CH insertion reactions of tosyl isocyanate with N-monosubstituted 4-amino-1,1,1-trifluorobut-3-en-2-ones have been studied. The regioselectivity of this reaction depends on the temperature, the nature of the solvent and the catalyst: High temperatures or basic catalysts direct in favour of NH insertion while low temperatures direct the process in favour of α-CH insertion. (C) 2000 Elsevier Science Ltd.
Original language | English (US) |
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Pages (from-to) | 10141-10145 |
Number of pages | 5 |
Journal | Tetrahedron Letters |
Volume | 41 |
Issue number | 51 |
DOIs | |
State | Published - Dec 16 2000 |
Externally published | Yes |
Keywords
- Enaminones
- Insertion reactions
- Regiochemistry
- Tosyl isocyanate
- Ureas