Molecular weight polymer from methine

Initiator 9 reacts with methyl methacrylate at -78 C in THF to produce a quantitative yield of acetal-ended polymer with n from 1 to 500 and Mw/Mn <1.2. DP s determined by NMR agree well with GPC molecular weights and hydroxyl equivalents. The presence of the blocked hydroxyl group in the polymer was verified by the presence of the phenyl protons in the correct proportion, and by the weak signals from the methine proton of the acetal group. This methine signal is too weak, however, to... 

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