and highly efficient method for the preparation of tetrasubstituted furans starting from readily accessible propargylic alcohols and commercially available 1,3-dicarbonyl compounds has been developed. The process, which proceeds in a one-pot manner, involves the initial propargylation of the 1,3-dicarbonyl compound promoted by trifluoroacetic acid, and subsequent cycloisomerization of the resulting
已经开发了一种从容易获得的炔
丙醇和可商购的1,3-二羰基化合物开始制备四取代
呋喃的简单高效的方法。该过程以一锅法进行,涉及由
三氟乙酸促进的1,3-二羰基化合物的初始炔丙基化,以及随后由16电子烯丙基
钌(II)催化的所得γ-酮炔的环异构化。复杂的[Ru(η 3 -2-C 3 H ^ 4 ME)(CO)(
DPPF)] [的SbF 6 ]。