Recommanded Product: 90-44-8. Recently I am researching about DENDRIMERS; ORGANOCATALYSTS; MOLECULES; CORE, Saw an article supported by the . Published in ACADEMIC PRESS INC ELSEVIER SCIENCE in SAN DIEGO ,Authors: Chhanda, SA; Itsuno, S. The CAS is 90-44-8. Through research, I have a further understanding and discovery of Anthrone
Chiral hyperbranched polymers (HBP) containing cinchona alkaloids were synthesized using a Mizoroki-Heck (MH) coupling polymerization reaction between a cinchona squaramide dimer and tri- or tetrasubstituted aromatic iodides. This is a new type of polymeric chiral organocatalyst. We found that the as-obtained chiral HBPs show excellent catalytic activity in the asymmetric Michael reaction. Almost perfect enantioselectivity (>99% ee) was achieved in the reaction of beta-ketoester and trans-beta-nitrostyrene. The three-dimensional network structure of the chiral HBPs is structurally robust and can be reused for further reaction without any loss in their catalytic activity. (C) 2019 Elsevier Inc. All rights reserved.
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