Rational ligand choice extends the SABRE substrate scope
Rational ligand choice extends the SABRE substrate scope
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DOI:
10.1039/d0cc01330g
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发表时间:
2020-08-21
影响因子:
4.9
通讯作者:
Theis, Thomas
中科院分区:
文献类型:
--
作者:
Colell, Johannes F. P.;Logan, Angus W. J.;Theis, Thomas
Here we report on chelating ligands for Signal Amplification By Reversible Exchange (SABRE) catalysts that permit hyperpolarisation on otherwise sterically hindered substrates. We demonstrate(1)H enhancements of similar to 100-fold over 8.5 T thermal for 2-substituted pyridines, and smaller, yet significant enhancements for provitamin B(6)and caffeine. We also show(15)N-enhancements of similar to 1000-fold and(19)F-enhancements of 30-fold.