Synthesis of hyperbranched polycarbonate by novel polymerization of di-tert-butyl tricarbonate with 1,1,1-tris(4-hydroxyphenyl)ethane
✍ Scribed by Miyasaka, Makoto; Takazoe, Taichi; Kudo, Hiroto; Nishikubo, Tadatomi
- Book ID
- 109974102
- Publisher
- Nature Publishing Group
- Year
- 2010
- Tongue
- English
- Weight
- 673 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0032-3896
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## Abstract Treatment of the lithium amide Li[NPh(SiMe~3~)] with 2,4,6‐tri‐__tert__‐butyl‐1,3,5‐triphosphabenzene, P~3~C~3~__t__Bu~3~, in a 1:2 ratio afforded equimolar amounts of the lithium salt of the five‐membered 2,4,5‐tri‐__tert__‐butyl‐1,3‐diphospholide anion, LiP~2~C~3~__t__Bu~3~ (isolated
6-Tri-tert-butyl-1,3,5-triphosphabenzene 4 reacts with to the 1,3,4,7-tetraphosphasemibullvalene derivative 10 as the only product. The single-crystal X-ray analysis of 10 phosphaalkynes PϵCϪR [R = tBu (5a), tPen (5b)] at room temperature in a formal [4 + 2] cycloaddition to yield the exhibits a dip