9-(2-Sulfo)fluorenylmethyloxycarbonyl chloride, a new reagent for the purification of synthetic peptides
作者:R. B. Merrifield、Anita E. Bach
DOI:10.1021/jo00419a021
日期:1978.12
<i>p</i>-Nitrophenyl carbonate promoted ring-opening reactions of DBU and DBN affording lactam carbamates
作者:Madhuri Vangala、Ganesh P Shinde
DOI:10.3762/bjoc.12.197
日期:——
The amidine bases DBU (1,8-diazabicyclo[5.4.0]undec-7-ene) and DBN (1,5-diazabicyclo[4.3.0]non-5-ene) display nucleophilic behaviour towards highly electrophilic p-nitrophenyl carbonate derivatives with ring opening of the bicyclic ring to form corresponding substituted epsilon-caprolactam and gamma-lactam derived carbamates. This simple method presents a unified strategy to synthesize structurally