Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
A copper(I)-NHC-catalyzed annulation of 5-membered cyclic enols of furan, thiophene and indene family with 3-aryl-2H-azirines has been developed to provide a rapid access to furo[3,4-b]pyrrole, thieno[3,4-b]pyrrole, indeno[1,2-b]pyrrole derivatives. The reaction proceeds via a copper-initiated N–C2 azirine bond cleavage with the retention of the C[dbnd]N double bond in the annulation product. The reaction of tetronic acids with 3-aryl-2H-azirines can also proceed under catalyst-free conditions, through a double addition of the enol to the azirine, but this route provides poor yields of the annulation products. This is the first example of the N–C2 bond cleavage in 2-unsubstituted 2H-azirines in the absence of a transition metal catalyst.
Язык оригинала | английский |
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Страницы (с-по) | 4663-4670 |
Число страниц | 8 |
Журнал | Tetrahedron |
Том | 73 |
Номер выпуска | 31 |
DOI | |
Состояние | Опубликовано - 2017 |
ID: 13392585