𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Transition metal-catalyzed tandem isomerization and cationic polymerization of allyl ethers. II. Structural and mechanistic studies

✍ Scribed by James V. Crivello; Surésh K. Rajaraman

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
227 KB
Volume
35
Category
Article
ISSN
0887-624X

No coin nor oath required. For personal study only.

✦ Synopsis

In the presence of organosilanes, dicobalt octacarbonyl catalyzes the polymerization of alkyl allyl ethers to give high molecular weight polymers. This article reports the results of a detailed mechanistic study of this new polymerization reaction. The evidence obtained in this study supports a stepwise process involving first, the reaction of dicobalt octacarbonyl with an organosilane to form HCo(CO) 4 and R 3 SiCo(CO) 4 . In subsequent steps, HCo(CO) 4 isomerizes the allyl ether to a 1-propenyl ether and then this compound is polymerized by the formal transfer of a silyl cation from R 3 SiCo(CO) 4 .

📜 SIMILAR VOLUMES

Transition metal-catalyzed tandem isomer
Transition metal-catalyzed tandem isomerization and cationic polymerization of allyl ethers. I. Discovery and scope
✍ James V. Crivello; Surésh K. Rajaraman 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 231 KB 👁 1 views

Allyl ethers are readily polymerized using a new polymerization reaction termed: transition metal-catalyzed tandem isomerization and cationic polymerization. Employing dicobalt octacarbonyl in combination with organosilanes, polymerization takes place rapidly and exothermically to give high molecula

Transition metal-catalyzed isomerization
Transition metal-catalyzed isomerization and polymerization of allylic and enolic ethers
✍ James V. Crivello; Surésh K. Rajaraman 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 194 KB 👁 1 views

Alkyl allyl ethers undergo facile thermally induced isomerization to alkyl 1-propenyl ethers in the presence of Group VIII transition metal carbonyl compounds as catalysts. The addition of a silane containing a Si-H bond to these systems results in a catalyst system that is capable of not only isome