A Tandem Isomerization-Mannich Reaction for the Enantioselective Synthesis of β-Amino Ketones and β-Amino Alcohols with Applications as Key Intermediates for ent-Nikkomycins and ent-Funebrine
P-Amino ketones, with a primary amino group, are easily obtained in good yields and excellent enantioselectivities through a short sequence that involves, as a key step, a tandem isomerization-Mannich reaction from allylic alcohols with N-tert-butanesulfinimines. This method was used for the enantioselective synthesis of corresponding β-amino alcohols and also for key intermediates in the preparation