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Synthesis of (±)-branched-chain azaisonucleosides via Michael addition of 5-nitro-2,2-pentamethylene-1,3-dioxane to methyl 2-bromoacrylate

✍ Scribed by Ewa Mironiuk-Puchalska; Ewa Kołaczkowska; Wojciech Sas


Book ID
104252220
Publisher
Elsevier Science
Year
2002
Tongue
French
Weight
165 KB
Volume
43
Category
Article
ISSN
0040-4039

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✦ Synopsis


Michael reaction of 2,2-pentamethylene-5-nitro-1,3-dioxane 1 with methyl 2-bromoacrylate, generated in situ from methyl 2,3-dibromopropanoate and triethylamine, afforded a-bromo-g-nitroester 3, which was readily converted into various 5,5-bis(hydroxymethyl)pyrrolidine analogues of nucleosides.


📜 SIMILAR VOLUMES


Organocatalytic Asymmetric Michael Addit
✍ Dieter Enders; Sharon Chow 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 139 KB

## Abstract The organocatalytic asymmetric Michael addition of 2,2‐dimethyl‐1,3‐dioxan‐5‐one (**1**) was performed with various nitro alkenes **2** using a number of proline‐based catalysts (**A**–**M**) affording polyfunctional nitro ketones **3**. Reverse diastereoselectivity was observed with th