Synthesis of Novel and Uniquely Shaped 3-Azabicyclo[4.2.0]octan-4-one Derivatives by Sequential Ugi/[2+2] Ene−Enone Photocycloadditions
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We report a new methodology for the construction of novel and uniquely shaped 3-azabicyclo[4.2.0]octan-4-one derivatives by combining the Ugi multicomponent reaction with [2+2] enone−olefin photochemical transformations. The overall sequence is capable of creating up to five stereocenters; however, in most cases, only two diastereomers are observed.
创建时间:
2007-03-29



