Chemistry of acetylenic ethers XXXVII. Synthesis of β-lactams (2-azetidinones) from imines and ethoxyalkynes
✍ Scribed by A. M. van Leusen; J. F. Arens
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 346 KB
- Volume
- 78
- Category
- Article
- ISSN
- 0165-0513
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✦ Synopsis
Abstract
β‐Lactams VII are formed when ethoxyalkynes II are slowly added to boiling solutions of aromatic imines VI in xylene. In all probability aldoketenes III are intermediate products. The yields are moderate to good.
📜 SIMILAR VOLUMES
## Abstract The α,β‐unsaturated thiolesters listed in Table I have been prepared by treating a mixture of a carbonyl compound and boron trifluoride with an acetylenic thioether (see reaction scheme 2). Good yields are obtained when ethers are used as solvents. The configuration of the esters prepar
## Abstract magnified image Ketene‐imine cycloaddition using phosphorus oxychloride and benzenesulfonyl chloride under the described reaction conditions yielded __trans__ 3‐phenylthio 2‐azetidinones in good yields. Desulfurization using Raney nickel and alkylation finally afforded __trans__ 3‐meth