Organic letters

Tandem intramolecular Nicholas and Pauson-Khand reactions for the synthesis of tricyclic oxygen-containing heterocycles

MM Quintal, KD Closser, KM Shea

文献索引：Quintal, Miriam M.; Closser, Kristina D.; Shea, Kevin M. Organic Letters, 2004 , vol. 6, # 26 p. 4949 - 4952

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被引用次数: 26

摘要

Although both transformations incorporate dicobalt hexacarbonyl complexed alkynes, surprisingly little is known about sequential combinations of these two reactions. Several groups have studied intermolecular Nicholas reactions followed by intramolecular Pauson−Khand reactions to yield bicyclic products; 4 however, only Schreiber has investigated a transformation that involves both intramolecular Nicholas and Pauson−Khand reactions to furnish a tricyclic ring system. 5 ...