Re: ORGLIST: mild methylation of -OH on a polymer chain

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From: Jacob Zabicky (zabicky$##$bgumail.bgu.ac.il)
Date: Fri Jun 04 1999 - 09:44:24 EDT

Hello Eugene,

Are your OH groups mostly primary, secondary, tertiary? It makes a
difference, especially in the latter case. Without knowing what type of
polymer you have in hand I just can suggest to have a look at the way they
methylate cellulose.

All the best

Jacob


>What are your suggestions for methylating hydroxy groups on a polymer
>chain under mild conditions?
>
>I thought about refluxing it with MeI in pyridin. Do you
>think this is a sensible choice?
>
>Moreover, I'm wondering how one could asess the degree of methylation
>without resorting to NMR or IR spectra. Viscosimetry might do, any
>other suggestions?
>
>TIA,
>
>Eugene Leitl

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