Tetrahedron p. 11385 - 11404 (1996)
Update date:2022-08-05
Topics:
Curran, Dennis P.
Liu, Hui
Josien, Hubert
Ko, Sung-Bo
Photolysis of N-propargyl-6-halo-2-pyridones and related aromatic halides in the presence of aryl isonitriles provides tetra- and penta-cyclic products in a single step by a sequence of radical addition to the isonitrile followed by two cyclizations. The scope and limitations of the process are described along with a first generation synthesis of racemic camptothecin.
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