A Chiral Cyclohexanone Linked to Polystyrene for Solid-Phase Synthesis of Chiral α-Carbonyls

Transfer of axial chirality through the nickel-catalysed hydrocyanation of chiral allenes

The transfer of axial chirality of allenes is beginning to be exploited as a powerful method for creating central chirality, particularly through the use of transition metal catalysis.

Non-cross-linked polystyrene-supported 2-imidazolidinone chiral auxiliary: synthesis and application in asymmetric alkylation reactions

Asymmetric alkylation reactions using non-cross-linked polystyrene (NCPS)-supported 2-imidazolidinone chiral auxiliaries were successfully investigated with excellent diastereocontrol (>99% de). The recovery and the recycling of this soluble polymer-supported chiral auxiliary were achieved in order to produce highly optical pure carboxylic acids.

Carbolithiation of Styrenes with N-tert-butyl aldimines

The addition of aldimine anions to styrene occurs upon the treatment of N-tert-butyl aldimine with LDA followed by the addition of styrene to give the corresponding aldehyde after hydrolysis. Cyclohexenyl amines are generated when the reactions are performed with unsaturated aldimines. This approach affords 4-phenyl substituted butanals and cyclohexenyl amines in a simple and inexpensive way.