Processes for the synthesis of dentritic macromolecules from...

C - Chemistry – Metallurgy – 08 – F

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C08F 4/06 (2006.01) C08F 4/50 (2006.01) C08F 8/34 (2006.01) C08F 8/38 (2006.01) C08F 20/10 (2006.01)

Patent

CA 2524491

The inventive subject matter relates to novel synthetic processes which use a multifunctional compound (the "TERMINI compound") having a masked or protected functional group, wherein the TERMINI compound is capable of quantitatively and irreversibly interrupting a living polymerization or a chain organic reaction. After deprotection or demasking of the functional group of the TERMINI compound, the same living polymerization or organic reaction resumes with 100 % efficiency, or a different living polymerization or organic reaction resumes with 100 % chemoselectivity, respectively. Once incorporated into a growing molecule, the TERMINI compound generates a branching point upon resumption of the polymerization or reaction.

La présente invention a trait à de nouveaux procédés de synthèse utilisant un composé multifonctionnel (le composé 'TERMINI'') comportant un groupe fonctionnel masqué ou protégé, dans lequel le composé TERMINI est capable d'interruption quantitative et irréversible d'une polymérisation vivante ou d'une réaction organique en chaîne. Suite à la déprotection ou au démasquage du groupe fonctionnel du composé TERMINI, la même polymérisation vivante ou réaction organique reprend avec 100 % d'efficacité, ou une polymérisation vivante ou réaction organique différente reprend avec 100 % de chimiosélectivité, respectivement. Une fois incorporé dans une molécule croissante, le composé TERMINI génère un point de ramification lors de la reprise de la polymérisation ou réaction.

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