期刊
DALTON TRANSACTIONS
卷 40, 期 6, 页码 1396-1400出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0dt01294g
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资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Centre in Green Chemistry and Catalysis (CCVC/CCGC)
The reaction of N,N'-dibenzyl-2-amino-4-imino-pent-2-ene, nacnac(Bn)H, with 1 or 2 equiv. of MgnBu(2) afforded the homoleptic complex nacnac(2)(Bn)Mg. The reaction of nacnac(Bn)H with Mg(N(SiMe3)(2))(2) yielded nacnac(Bn)MgN(SiMe3)(2), which reacted with tert-butanol to form nacnac(Bn)MgOtBu. The latter complex crystallizes as an alkoxide bridge dimer and is active in the ring-opening polymerisation of rac-lactide. Polymerisations at room temperature afforded atactic polylactide, while polymerisations at -17 and -26 degrees C afforded polylactide with a small isotactic bias (P-m = 0.52, and 0.55, respectively).
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