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Diastereoselective “contra-Michael" addition of(−)-sparteineorganolithiumcomplexes to secondary chiral cinnamyl amides

✍ Scribed by Nathalie Bremand; Ilan Marek; Jean F. Normant


Book ID
104261279
Publisher
Elsevier Science
Year
1999
Tongue
French
Weight
186 KB
Volume
40
Category
Article
ISSN
0040-4039

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Diastereoselective Michael Additions of
✍ Seebach, Dieter ;Pfammatter, Elmar ;Gramlich, Volker ;Bremi, Tobias ;Kühnle, Flo 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 786 KB

## Abstract The enolates A and C of __t__‐butyl (__R__)‐2‐__t__‐butyl‐3‐methyl‐4‐oxo‐1‐imidazolidinecarboxylate (1, Boc‐BMI) and of 1‐__t__‐butyl 5‐methyl (2__R__,5__S__)‐2‐__t__‐butyl‐3‐methyl‐1,5‐imidazolidinedicarboxylate (3) and __t__‐butyl (__R__)‐2‐__t__‐butyl‐5‐lithio‐3‐methyl‐1‐imidazolidin