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Stereoselective one-pot synthesis of β-lactams by Lewis acid promoted condensation of silylketene thioacetals with imines

✍ Scribed by Rita Annunziata; Mauro Cinquini; Franco Cozzi; Valentina Molteni; Olaf Schupp

Book ID
107857738
Publisher
Elsevier Science
Year
1996
Tongue
French
Weight
561 KB
Volume
52
Category
Article
ISSN
0040-4020

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Solvent-Free, One-Pot Synthesis of β-Lac
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The synthesis of β-lactams via a one-pot
The synthesis of β-lactams via a one-pot Reformatsky reaction of imines promoted by Zn/Cp2TiCl2 (cat.)
✍ Lei Chen; Gang Zhao; Yu Ding 📂 Article 📅 2003 🏛 Elsevier Science 🌐 French ⚖ 107 KB

In the presence of Zn/Cp 2 TiCl 2 (cat.) a-bromoacetates, g-bromocrotonates or a-bromomethylacrylates react with imines in one-pot to form b-lactams, 3-vinyl-b-lactams or a-methylene-g-lactams, respectively, at room temperature without the need for pretreatment of the solvent and Zn.