Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published December 14, 2014 | Accepted Version
Journal Article Open

Z-Selective ruthenium metathesis catalysts: Comparison of nitrate and nitrite X-type ligands


Two new Ru-based metathesis catalysts, 3 and 4, have been synthesized for the purpose of comparing their catalytic properties to those of their cis-selective nitrate analogues, 1 and 2. Although catalysts 3 and 4 exhibited slower initiation rates than 1 and 2, they maintained high cis-selectivity in homodimerization and ring-opening metathesis polymerization reactions. Furthermore, the nitrite catalysts displayed higher cis-selectivity than 2 for ring-opening metathesis polymerizations, and 4 delivered higher yields of polymer.

Additional Information

© 2014 Elsevier Ltd. Received 10 April 2014; Accepted 28 June 2014; Available online 18 July 2014. This work was financially supported by the NIH (R01GM031332) and the NSF (CHE-1212767). NMR spectra were obtained on instruments funded by the NIH (RR027690). Materia is gratefully acknowledged for donation of metathesis catalysts 1 and 2. We thank Naseem Torian for high-resolution mass spectrometry studies. The authors would like to thank Brendan Quigley for helpful discussions and assistance with NMR experiments and Dr. B. Keith Keitz for initial experiments.

Attached Files

Accepted Version - nihms-615448.pdf


Files (904.9 kB)
Name Size Download all
904.9 kB Preview Download

Additional details

August 22, 2023
October 17, 2023