Fig. 4: Gram-sale synthesis and functionalisation and demonstration of utility.

a Gram-scale reaction. Compared with the small-scale reaction, using substrates 1a and 2a in a gram-scale reaction produced the desired product 3a with the same level of enantiomeric excess (ee) and yield. b The silyl succinimides can be readily reduced to the stable silylpyrrolidine that could be transferred into structurally diverse and chiral N-heterocycles without racemisation. DMAD dimethyl acetylenedicarboxylate, PFNB petafluoronitrobenzene, CFL compact fluorescent light, ct the value of chirality transfer.