Hexahydro-1H-Isoindolinone-Like Scaffolds from Electronically Deactivated and Sterically Hindered Dienes: Synthesis in the Context of Muironolide A
作者:T. Mitchell、Christopher Olson、Courtnay Shaner、Sydney Roche、Gregory Ferrence
DOI:10.1055/s-0034-1380221
日期:——
intermolecular Diels–Alder strategy was initiated that utilized electronically deactivated and sterically hindered dienes. The [4+2] cycloadditions were successful, but only with highly reactive dipolarophiles such as N-phenylmaleimide and 4-phenyl-1,2,4-triazoline-3,5-dione thus establishing the scope of these dienes. Although limited, installation of the α,β-unsaturated lactam embedded in the hexahydro-1H-isoindolinone
摘要 最初基于分子内Diels-Alder策略的Muironolide A的合成努力受到了共轭物还原(而不是所需的半还原)的阻碍。分子间Diels-Alder策略的提出是利用电子去活化的和空间受阻的二烯。[4 + 2]环加成是成功的,但仅对高反应性的偶极亲和性化合物(如N-苯基马来酰亚胺和4-苯基-1,2,4-三唑啉-3,5-二酮)有效,因此确定了这些二烯的范围。尽管有局限性,但是值得注意的是嵌入六氢-1 H-异吲哚满酮中的α,β-不饱和内酰胺的安装。 最初基于分子内Diels-Alder策略的Muironolide A的合成努力受到了共轭物还原(而不是所需的半还原)的阻碍。分子间Diels-Alder策略的提出是利用电子去活化的和空间受阻的二烯。[4 + 2]环加成是成功的,但仅对高反应性的偶极亲和性化合物(如N-苯基马来酰亚胺和4-苯基-1,2,4-三唑啉-3,5-二酮)有效,因此确定