Boron‐functionalized poly(3‐hydroxybutyrate)s from hydroboration of poly(allyl‐β‐hydroxyalkanoate)s: Synthesis and insights into the microstructure

The controlled ring‐opening polymerization of racemic allyl‐β‐butyrolactone (rac‐BL allyl) in toluene or in bulk, catalyzed by the discrete β‐diiminate zinc amido [(BDIiPr)Zn(N(SiMe 3)2)] (1) or {amino‐methoxy‐bis(phenolate)}yttrium amido [(ONOOtBu)Y(N(SiHMe 2)2)(THF)] (2) complexes, in associati…