Regio- and diastereoselective synthesis of bifunctionalized limonenes

Mild and selective silicon-mediated access to enantioenriched 1,2-mercaptoamines and β-amino arylchalcogenides

Metal-free ring opening reactions of activated and unactivated aziridines with different silyl chalcogenides are described.

Methods for direct alkene diamination, new & old

The 1,2-diamine moiety is a ubiquitous structural motif present in a wealth of natural products, including non-proteinogenic amino acids and numerous alkaloids, as well as in pharmaceutical agents, chiral ligands and organic reagents. The biological activity associated with many of these systems and their chemical utility in general has ensured that the development of methods for their preparation is of critical importance. While a wide range of strategies for the preparation of 1,2-diamines have been established, the diamination of alkenes offers a particularly direct and efficient means of accessing these systems. The purpose of this review is to provide an overview of all methods of direct alkene diamination, metal-mediated or otherwise.

Synthesis of both isomers of aziridine derived from the mixture of cis- and trans-limonene oxide

A short and efficient route is described for both isomers of aziridine derived from the commercially available 1:1 mixture of limonene oxides. The process is amenable to scale-up and allows easy access to multigram quantities of these useful chiral building blocks.