ChemInform Abstract: STRUKTUR UND REAKTIVITAET VON TRIALKYLALUMINIUMVERBINDUNGEN

Namy, Jean‐Louis; Henry-Basch, Erica; Freon, Pierre

doi:10.1002/chin.197009265

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“…Such an undesirable coordination of phosphoramides has been already observed in both isomerization of epoxides with LiBr-HMPA system 40 and reactions of epoxides or aldehydes with alkylaluminiums in HMPA. 41 In the case of the polymerization with diethylzinc, the undesirable coordination of the bidentate phosphoramides may be reduced more than in the polymerization with alkylaluminiums, because of the weak interaction between diethylzinc and the phosphoramides.…”

Section: A Consideration Concerning the Interaction Of Organometallicmentioning

confidence: 99%

Anionic Polymerization of Vinyl Monomers with Organometallic Compound—Phosphoramide Systems

Tomoi

Onozawa

Seki

et al. 1975

Polym J

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The polymerization of vinyl monomers with organometailic compounds was carried out in the presence of monodentate or bidentate phosphoryl compounds with-N(CH3)2 substituents. The polymerization of styrene or a-methylstyrene (a-MeSt) with organomagnesium compounds was more facilitated in the presence of the bidentate donors than in the presence of the monodentate type. In the polymerization of acrylonitrile (AN) with diethylzinc or organoaluminium compounds, the bidentate phosphoramides were less effective donors than the monodentate ones. The latter polymerization was considered to be caused by the coordination of both the phosphoramides and AN with the organometailic compounds, and to be reduced by the undesirable coordination of the bidentate phosphoramides to the sites required for the coordination of AN. The equilibrium monomer concentration ([M]e) in the polymerization of a-MeSt was dependent on the solvents used for the polymerization; the values of [M]e was smailer in toluene than in tetrahydrofuran.

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Section: A Consideration Concerning the Interaction Of Organometallicmentioning

confidence: 99%

Anionic Polymerization of Vinyl Monomers with Organometallic Compound—Phosphoramide Systems

Tomoi

Onozawa

Seki

et al. 1975

Polym J

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ChemInform Abstract: STRUKTUR UND REAKTIVITAET VON TRIALKYLALUMINIUMVERBINDUNGEN

Abstract: Bei Reaktion des Oxids (II) mit der Alky1‐Al‐Verbindung (I), eingesetzt als Monosolvat mit Äther oder THF, werden (nach Hydrolyse) je nach Wahl des Lösungsmittels nur der Alkohol (III) oder die isomeren Alkohole (III) und (IV) gebildet.

Cited by 1 publication

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Anionic Polymerization of Vinyl Monomers with Organometallic Compound—Phosphoramide Systems

Anionic Polymerization of Vinyl Monomers with Organometallic Compound—Phosphoramide Systems

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