Steady-state and laser photolysis studies of substituted 2H-azirines. Spectroscopy, absolute rates, and Arrhenius behavior for the reaction of nitrile ylides with electron deficient olefins
Synthesis of Pyridines by Carbenoid-Mediated Ring Opening of 2<i>H</i>-Azirines
作者:Nicole S. Y. Loy、Alok Singh、Xianxiu Xu、Cheol-Min Park
DOI:10.1002/anie.201209301
日期:2013.2.18
a wide range of substituents on the resulting pyridinering using mild reaction conditions (see scheme; esp=α,α,α′,α′‐tetramethyl‐1,3‐benzenedipropionic acid). The formation of the key intermediate is catalyst‐controlled, and subsequent cyclization and oxidation affords pyridines in excellent yields. The method has been used for the efficient synthesis of polyarylpyridines.