A domino propargylation/furanylation (intramolecular exo-dig-cyclization)/benzannulation reaction of 2,4-diyn-1-ols with 1,3-dicarbonyl compounds has been developed for the first time. This provides a novel and effective method for the preparation of aryl/heteroaryl-fused benzofurans from easily accessible starting materials in a single step. The methodology was extended to pyrrolyl-benzannulation
A systematic study on the Cadiot–Chodkiewicz cross coupling reaction for the selective and efficient synthesis of hetero-diynes
作者:Bhavani Shankar Chinta、Beeraiah Baire
DOI:10.1039/c6ra07308e
日期:——
99% selectivity for cross coupling. Excellent yields (upto 94%). Low basic reaction medium, high functional group tolerance. Use of green solvent water.
99%的交叉偶联选择性。产率优异(高达94%)。反应介质碱性低,官能团耐受性高。使用绿色溶剂水。
An atom- and pot-economical consecutive multi-step reaction approach to polycyclic aromatic hydrocarbons (PAHs)
A novel one-pot benzannulation reaction has been developed for the synthesis of substituted polycyclic aromatic hydrocarbons (PAHs) from the direct coupling of propargylic aldehydes/alcohols with 1,1-diarylethanol through an atom-economical uninterrupted...