José P. Da Silvaさんまだ現役か。Supramolecular化学も中々この段階から抜け出せないね。留学生指導のための研究？
Melding Caged Compounds with Supramolecular Containers: Photogeneration and Miscreant Behavior of the Coumarylmethyl Carbocation
Nareshbabu Kamatham†, José P. Da Silva*‡, Richard S. Givens*§, and V. Ramamurthy*†
† Department of Chemistry, University of Miami, Coral Gables, Miami, Florida 33124, United States
‡ CCMAR - Centre of Marine Sciences, University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
§ Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
Org. Lett., Article ASAP
DOI: 10.1021/acs.orglett.7b01572
Publication Date (Web): June 20, 2017
By merging well-established concepts of supramolecular chemistry, protecting group strategy, and photochemistry, we have solubilized in water hydrophobic organic molecules consisting of a photoactive protecting group and masked carboxylic acids, released the desired acid, and confined a reactive carbocation intermediate within a capsule.
Confinement of the photogenerated carbocation brought out the latent radical-like behavior.
This observation is consistent with the recent theoretical prediction of the 7-(diethylamino)coumarinyl-4-methyl carbocationhaving a triplet diradical ground-state electronic contribution.