access to the corresponding α-halo aldehydes, which undergo regioselective annulation to form borylated thiazoles. A condensation/amidation sequence converts α-boryl aldehydes into stable α-boryl enamides without concomitant C → N migration. We also show that palladium-catalyzed cyclization of α-boryl enamides leads to synthetically versatile isoindolones. These molecules can be subsequently used to access
已经证明了 α-
硼烯胺和烯酰胺在氮杂环合成中的使用。
硼烯胺可以很容易地获得相应的 α-卤代醛,这些醛经过区域选择性环化形成
硼化
噻唑。缩合/酰胺化序列将 α-
硼醛转化为稳定的 α-
硼烯酰胺,而不会伴随 C → N 迁移。我们还表明,
钯催化的 α-
硼烯酰胺环化导致合成通用的异
吲哚酮。这些分子随后可用于访问多环支架。