английский => русский Право/Патенты Химия; химические науки и технологии синтез катализаторов

Use of various epoxides as switch reagent for PCL production.
LZn2(OAc)2 (1 eq), ε-caprolactone (200 eq), and epoxide (800 eq) were added to a schlenk tube.
The mixture was heated to 80°C for 3 hours.
After 3 hours a NMR aliquot was taken to determine conversion and the excess epoxide was removed by vacuum.

Вот еще о нем же
In particular, the chemistry of the catalyst active site allows selective polymerisation of particular monomers and control of block sequence in the production of block copolymers comprising polycarbonate blocks and polyester blocks, using a single catalytic system.
It is possible to switch between the formation of a polyester and a polycarbonate by controlling the growing polymer chain end and by selecting the identity and amount of the monomers used.

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