A novel polymer was synthesized by copolymerization of styrene monomer bearing dicyanoketene acetal functionality and ethylene glycol dimethacrylate, and used successfully as a recyclable ~-acid catalyst in monothioacetalization of aromatic, aliphatic, acyclic, and cyclic acetals with thiophenol and
An improved synthesis of a polymer-supported distannane and its application to radical formation
✍ Scribed by Jörg Junggebauer; Wilhelm P Neumann
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- French
- Weight
- 578 KB
- Volume
- 53
- Category
- Article
- ISSN
- 0040-4020
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✦ Synopsis
A polymer-supported distannane 1 was prepared by treatment of tin halide resin with lithium naphthalenide or sodium naphthalenide in THF. The content of the polymers 1 was determined to be 0.95 to 1.13 mmol/g tin as ditin. The polymer-supported distannane reagent was successfully applied to radical cyclizations of acyclic ct-haloesters to yield 7-butyrolactones.
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## Abstract For Abstract see ChemInform Abstract in Full Text.
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