Dimetalation of Furans and Thiophenes. One-Pot Procedures for Furan-2,5- and Thiophene-2,5-dicarboxaldehyde
作者:Ben L. Feringa、Ron Hulst、Ruud Rikers、Lambert Brandsma
DOI:10.1055/s-1988-27553
日期:——
A new one-pot synthesis of furan-2,5-dicarboxaldehyde and thiophene-2, 5-dicarboxaldehyde in 80% and 75% yields, respectively, via dimetalation of furan and thiophene, is described. In addition, monoprotected furan-2,5-dicarboxaldehyde was prepared in 73% yield from furfural.
描述了一种新的单锅合成方法,通过呋喃和噻吩的双金属化反应,分别以80%和75%的产率制备了呋喃-2,5-二甲酰醛和噻吩-2,5-二甲酰醛。此外,从糠醛出发,以73%的产率合成了单保护的呋喃-2,5-二甲酰醛。