Enantiospecific Formation of 3,6-Dihydro-1<i>H</i>-pyridin-2-ones: Low-Pressure Palladium-Catalysed Decarboxylative Carbonylation of 3-Tosyl-5-vinyloxazolidin-2-ones
作者:Julian G. Knight、Iain M. Lawson、Christopher N. Johnson
DOI:10.1055/s-2005-924765
日期:——
Palladium-catalysed decarboxylative carbonylation of 3-tosyl-5-vinyloxazolidin-2-ones 5 occurs at atmospheric pressure to give 1-tosyl-3,6-dihydro-1H-pyridin-2-ones 6. The reaction proceeds with no loss of enantiopurity and detosylation with sodium naphthalenide gives the title compounds in good yields.
钯催化的 3-tosyl-5-vinyloxazolidin-2-ones 5 的脱羧羰基化反应在大气压下发生,得到 1-tosyl-3,6-dihydro-1H-pyridin-2-ones 6。反应进行时没有损失对映体纯度和用萘钠去甲苯基化以良好的收率得到标题化合物。