Novel synthesis of oxocine derivatives by Wittig olefination and intramolecular Heck reaction via 8-endo trig cyclization
作者:K.C. Majumdar、B. Chattopadhyay、B. Sinha
DOI:10.1016/j.tetlet.2007.12.096
日期:2008.2
A concise and efficient method for the preparation of oxocine derivatives is described via sequential Wittig and intramolecularHeck reactions. The method is highly regioselective and affords high yields of the products.
The synthesis of oxocines and oxepines is difficult. Two efficient protocols have been developed for the construction of naphthoxepine and naphthoxocine derivatives by sequential Wittig olefination and intramolecular Heck reaction.