Pinch of salt: α-Chloroaldehydes are used as equivalents of terminal alkynes, thus allowing preparation of isoquinolones, 2-pyridones, and 3,4-dihydroisoquinolines with regioselectivity complementary to that of known processes. Such products proved valuable for approaching other heterocycles. The anion of an added sodium salt presumably supports an ester enolate generation, or stabilizes assemblies induced by hydrogen-bond interactions.

中文翻译：

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铑（III）催化的N-甲氧基酰胺与α-氯醛环化的微波辅助合成杂环

少量盐：α-氯醛用作末端炔的等价物，因此可以制备异喹诺酮，2-吡啶酮和3,4-二氢异喹啉，其区域选择性与已知方法互补。事实证明，此类产品对于接近其他杂环很有价值。添加的钠盐的阴离子可能支持酯烯酸酯的生成，或稳定由氢键相互作用诱导的组装。