5-endo-dig Cyclisations of homopropargylic sulfonamides: a new route to 2,3-dihydropyrroles and β-iodopyrroles
作者:David W. Knight、Adele L. Redfern、Jeremy Gilmore
DOI:10.1039/a806386i
日期:——
5-endo-dig Iodocyclisations of the homopropargylic sulfonamides 12aâc and 13 give excellent yields of the iododihydropyrroles 14aâd and thence the β-iodopyrroles 15aâd, following base-catalysed elimination of sulfinic acid.