Facile Synthesis of Spiro Oxindoles, Azaoxindoles, and Dihydroisoquinolone
摘要:
[image omitted] Formation of 1-aryl-4-oxo-cyclohexa(e)nonecarboxylates from the Diels-Alder cycloaddition of 2-trimethylsilyloxy-1,3-butadiene and Danishefsky diene with aryl- and pyridylacrylates and further conversion thereof to spirocycles is described. This provides an efficient method for spiro oxindoles, azaoxindoles, and dihydroisoquinolones.