TBD- or PS-TBD-Catalyzed One-Pot Synthesis of Cyanohydrin Carbonates and Cyanohydrin Acetates from Carbonyl Compounds
作者:Satoru Matsukawa、Junya Kimura、Miki Yoshioka
DOI:10.3390/molecules21081030
日期:——
Cyanation reactions of carbonylcompounds with methyl cyanoformate or acetyl cyanide catalyzed by 5 mol % of 1,5,7-triazabicyclo[4,4,0]dec-5-ene (TBD) were examined. Using methyl cyanoformate, the corresponding cyanohydrin carbonates were readily obtained in high yield for aromatic and aliphatic aldehydes and ketones. Similar results were obtained when acetyl cyanide was used as the cyanide source.
Consecutive reactions to construct tricarbonyl compounds and synthetic applications thereof
作者:Diego Madroñero、Cesar A. Mujica-Martinez、Alfredo Vázquez
DOI:10.1039/d1ra05187c
日期:——
Lithium anions derived from O-carbonate-protected cyanohydrins undergo conjugate addition to cycloalkenones with the concomitant transfer of the alkoxycarbonyl group to produce tricarbonyl compounds. These products offer numerous possibilities for further elaboration. The synthetic potential of the cascade products was demonstrated by forming bicyclic and tricyclic systems through intramolecular condensation