Base-free two-step synthesis of 1,3-diketones and β-ketoesters from α-diazocarbonyl compounds, trialkylboranes, and aromatic aldehydes
作者:Miguel A. Sanchez-Carmona、David A. Contreras-Cruz、Luis D. Miranda
DOI:10.1039/c1ob05150d
日期:——
We describe a convergent, base-free two-step synthesis of 1,3-diketones and β-ketoesters from α-diazocarbonyl compounds, trialkylboranes, and aromatic aldehydes in a three-component process. The synthetic potential of this protocol was underscored by the synthesis of several symmetrical 1,3,5-triaryl-4-alkyl and 1,3,4,5-tetraryl substituted pyrazoles in a three-step sequence.
我们描述了一种收敛的无基团两步合成方法,通过三组分反应从α-二氮碳酰化合物、三烷基硼烷和芳香醛合成1,3-二酮和β-酮酯。这一合成方法的潜力在于能够在三步反应中合成多种对称的1,3,5-三芳基-4-烷基和1,3,4,5-四芳基取代的吡唑。