α,β‐Unsaturated acylcyanides are key bis‐electrophile substrates for successful domino enantioselectiveorganocatalyzed Michael‐intramolecular acylation domino sequences. This new reactivity has been applied to the synthesis of enantioenriched azaspiro[4,5]decanone ring systems by a formal [3+3]spiroannulation, constituting a rare example of synthesis of glutarimides in an optically active form.
The reaction of acyl cyanides with “Huisgen zwitterion”: an interesting rearrangement involving ester group migration between oxygen and nitrogen atoms
作者:Xu-Guang Liu、Yin Wei、Min Shi
DOI:10.1039/b913196e
日期:——
novel rearrangementinvolving ester group migration was found in the reaction of acyl cyanides and Huisgen zwitterions, affording hydrazone derivatives at higher temperature (90 °C) and azine derivatives at lower temperature (20 °C), respectively. Interestingly, the reaction temperature is identified as a critical factor to control the final products. Presumably, the rearrangementinvolving ester group