Reductive ipso-radical cyclization onto aromatic rings of five-membered alicyclic amino acids bearing N-(2-phenyl)benzoyl groups by photoinduced electron transfer promoted decarboxylation
作者:Tomoaki Yamada、Yui Ozaki、Mugen Yamawaki、Yoshihiko Sugiura、Kana Nishino、Toshio Morita、Yasuharu Yoshimi
DOI:10.1016/j.tetlet.2017.01.038
日期:2017.3
A new radical cyclization has been developed for the one-step synthesis of spiro dihydroisoquinolinone derivatives from alicyclic amino acids bearing N-(2-phenyl)benzoyl groups through photoinduced electron transfer (PET)-promoted decarboxylation. Reductive ipso-radical cyclization onto a benzene ring by an alkyl radical is achieved under mild conditions for the first time, although the substrates
已开发出一种新的自由基环化方法,用于通过光诱导电子转移(PET)促进的脱羧作用,从带有N-(2-苯基)苯甲酰基的脂环族氨基酸一步合成螺二氢异氢喹啉酮衍生物。还原本位-基团环化到通过自由基首次温和的条件下实现,虽然基板被限制为五元脂族羧酸的轴承的烷基的苯环ñ - (2-苯基)苯甲酰基。