Metal- and Solvent-Free Approach to Diversely Substituted Picolinates via Domino Reaction of Cyclic Sulfamidate Imines with β,γ-Unsaturated α-Ketocarbonyls
作者:Soumen Biswas、Debashis Majee、Soumitra Guin、Sampak Samanta
DOI:10.1021/acs.joc.7b01792
日期:2017.10.20
An efficient, solvent-free, and eco-friendly domino reaction of 5/6-membered cyclic sulfamidate imines with a variety of β,γ-unsaturated α-ketocarbonyls in neat conditions under MW irradiation promoted by DABCO as a solid organobase has been developed for the rapid construction of a novel class of densely functionalized picolinates. This interesting metal–solvent-free tactic allows a wide range of
在DABCO促进的MW辐射下,在纯净条件下,开发了5/6元环状氨基磺酸亚胺与各种β,γ-不饱和α-酮羰基化合物的高效,无溶剂,生态友好的多米诺反应,该反应是由DABCO促进的,作为固体有机碱用于快速构建新型的高密度官能化的吡啶甲酸类化合物。这种有趣的无金属溶剂策略可在芳基环上提供多种有用的功能,并能在较短的时间间隔(20-40分钟)内,将上述氮杂杂环化合物的收率很好地提高。通过我们独特的方法成功合成了具有生物学前途的咪唑并[1,2- a ]吡啶。