Photoinduced Intramolecular Cyclopentanation vs Photoprotolytic Oxametathesis in Polycyclic Alkenes Outfitted with Conformationally Constrained Aroylmethyl Chromophores
作者:Roman A. Valiulin、Teresa M. Arisco、Andrei G. Kutateladze
DOI:10.1021/jo301909j
日期:2013.3.1
Intramolecular photoinduced cyclizations are investigated in photoprecursors assembled in a modular fashion via a Diels–Alderreaction of acetylenic dienophiles with subsequent Michael additions of aromatic ketones to install a chromophore capable of initiating Paternò–Büchi cycloadditions or radical cyclization cascades. The protolytic oxametathesis in these systems allows for rapidaccess to novel