visible light enabled synthesis of substituted pyrroles from α‐keto vinyl azides (readily prepared via Knoevenagel condensation of phenacylazides with 2‐oxo‐2H‐chromene‐3‐carbaldehydes) was developed. The reaction proceeds through a denitrogenative photodecomposition of α‐keto vinyl azides, 1,3‐amino group migration, and coupling of intermediates with secondary amines.
Synthesis of some novel spiro substituted pyrido[2,3-c]coumarins by exploring ‘tertiary amino effect’ reaction strategy
作者:Pallabi Borah、Pulak J. Bhuyan
DOI:10.1016/j.tetlet.2013.10.055
日期:2013.12
Some novel spiro substituted pyrido[2,3-c]coumarin derivatives were synthesized from 4-hydroxycoumarin by exploring ‘tertiary amino effect’ reaction strategy.
通过研究“叔氨基效应”反应策略,由4-羟基香豆素合成了一些新的螺取代的吡啶并[2,3- c ]香豆素衍生物。