ACKNOWLEDGMENTWe graciously acknowledge the chemistry department at the University of Rhode Island for providing generous funding. Ms. Nicole Cook is also thanked for her editorial suggestions and expertise.
A novel protocol
for the regioselective intermolecular amination
of various arenes has been developed. By using an I(III) oxidant in
the presence of a Au(I) catalyst, a direct and novel route for regioselectively
accessing a variety of substituted aniline moieties has been achieved
with yields as high as 90%. Mechanistic insight suggests that regioselectivity
can be predicted based on electrophilic aromatic metalation patterns.
A new approach for the direct amination of 2-phenylpyridine derivatives using a diphthalimide-iodane and copper triflate has been developed. A series of different 2-phenylpyridine derivatives were aminated with yields up to 88%. Mechanistic investigations indicate that the reaction proceeds via a copper-mediated single electron transfer.
A contemporary approach to the synthesis and purification of several UV-active dipeptides has been developed for the second-year organic laboratory. This experiment exposes students to the important technique of solution-phase peptide synthesis and allows an instructor to highlight the parallel between what they are accomplishing in the laboratory to the advancements being made in the pharmaceutical industry. By illustrating the importance of protecting group strategy and stereochemistry preservation, while also reinforcing the various separatory and purification techniques learned throughout the typical laboratory course, this experiment serves as an excellent candidate for a capstone project that assesses students' mastery of important techniques learned in an introductory organic laboratory course.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.