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Stereoselective TiCl4-Promoted Nucleophilic Substitution at C-2 of (4S,5S)-2-Alkyl-4-methyl-5-trifluoromethyl-1,3-dioxolanes.

✍ Scribed by Carlo F. Morelli; Lavinia Duri; Alberto Saladino; Giovanna Speranza; Paolo Manitto

Publisher
John Wiley and Sons
Year
2005
Weight
29 KB
Volume
36
Category
Article
ISSN
0931-7597

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✍ D. Tytgat; M. Gelbcke 📂 Article 📅 2010 🏛 Wiley (John Wiley & Sons) ⚖ 339 KB 👁 1 views

The condensation of (1 R,2S) or (lS,2S)-N,N'-dimethyI-l-phenylpropane-l 2-diamines with aldehydes gives respectively two diastereorneric 2-alkyl-l,3,4-trimethyI-S-phen limidazolidines. At thermodynamical equilibrium the major isomer in the erythro series is this one where t f ! e substituents at pos