1-(2′-Anilinyl)prop-2-yn-1-ol Rearrangement for Oxindole Synthesis
作者:Prasath Kothandaraman、Bing Qin Koh、Taweetham Limpanuparb、Hajime Hirao、Philip Wai Hong Chan
DOI:10.1002/chem.201202606
日期:2013.2.4
on NIS (N‐iodosuccinimide)‐mediated cycloisomerization reactions of 1‐(2′‐anilinyl)prop‐2‐yn‐1‐ols to gem‐3‐(diiodomethyl)indolin‐2‐ones and 2‐(iodomethylene)indolin‐3‐ones has been developed. The reactions were shown to be chemoselective, with secondary and tertiary alcoholic substrates exclusively giving the 3‐ and 2‐oxindole products, respectively. In the case of the latter, the transformation features