Synthesis of epoxy polymers from bisphenols with bulky substituents
✍ Scribed by V.V. Korshak; L.K. Solov'eva; I.V. Kamenskii
- Book ID
- 118359466
- Publisher
- Elsevier Science
- Year
- 1971
- Weight
- 402 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0032-3950
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## Abstract Enantiopure 5,5‐disubstituted __t__‐butyl 2‐__t__‐butyl‐3‐methyl‐4‐oxoimidazolidine‐1‐carboxylates readily available by diastereoselective double alkylation of the parent compound (Boc‐BMI) can be converted to α‐branched α‐amino acids with two bulky substituents (PhCH~2~/Et, PhCH~2~/__i
Phenylacetylenes (PAs) with bulky substituents (adamantyl, tert-butyl, and n-butyl groups) at the para-position polymerized in good yields with Fe, Rh, Mo, and W catalysts. The formed polymers were soluble, and their number-average molecular weights were in the range of thousands to hundred thousand