Intramolecular carbolithiation of <i>N</i>-allyl-ynamides: an efficient entry to 1,4-dihydropyridines and pyridines – application to a formal synthesis of sarizotan
作者:Wafa Gati、Mohamed M Rammah、Mohamed B Rammah、Gwilherm Evano
DOI:10.3762/bjoc.8.250
日期:——
developed a general synthesis of polysubstituted 1,4-dihydropyridines and pyridines based on a highly regioselective lithiation/6-endo-dig intramolecular carbolithiation from readily available N-allyl-ynamides. This reaction, which has been successfully applied to the formalsynthesis of the anti-dyskinesia agent sarizotan, further extends the use of ynamides in organic synthesis and further demonstrates
De Novo Synthesis of 1,4-Dihydropyridines and Pyridines
作者:Wafa Gati、Mohamed M. Rammah、Mohamed B. Rammah、François Couty、Gwilherm Evano
DOI:10.1021/ja303002a
日期:2012.6.6
An efficient and general method for the synthesis of 1,4-dihydropyridines and pyridines based on a lithiation/isomerization/intramolecular carbolithiation sequence is reported. This procedure provides an efficient, divergent, and straightforward entry to a wide range of polysubstituted dihydropyridines and pyridines starting from readily available N-allyl-ynamides.