A debrominationreaction to synthesize α‐mono‐ and α,α‐dibromomethylketones with high selectivity from α,α,α‐tribromomethylketones by the controlling of H2OHBr reductive conditions was developed.
The aerialoxidation of various 2,2-dibromo-1-aryl and heteroaryl ethanones to α-keto amides in the presence of air or oxygen and secondary amines are described. The reaction provides α-keto amides in moderate to good yields. The versatility of the reaction was established by synthesizing a series of α-keto amides by the reaction of dibromoethanones derived from aryl and heteroaryl ketones with cyclic
One-pot furan synthesis through diethylzinc-mediated coupling reaction between two α-bromocarbonyl compounds
作者:Ryo Hikima、Aika Takeshima、Taichi Kano
DOI:10.1039/d3ob01521a
日期:——
Polysubstituted furans were synthesized in one-pot through the Et2Zn-mediated couplingreaction between dibromoketones and monobromo carbonyl compounds and the subsequent β-elimination with bromoacetyl bromide. Polysubstituted pyrroles were also prepared in one-pot by addition of primary amines after the couplingreaction.