Ok this is some nice work. Pyridylphosphines for the Mitsunobu and Appel reactions that can be either washed out with CuSO4 solution or precipitated with THF doi.org/10.1021/acs.... #chemsky
The use of bis(2-pyridyl)phenylphosphine and tris(2-pyridyl)phosphine as practical, drop-in alternatives to triphenylphosphine in the Mitsunobu and Appel reactions is reported. Their P-oxides are easi...