Direct olefination of benzaldehydes into hydroxy functionalized oligo (p-phenylenevinylene)s via Pd-catalyzed heterodomino Knoevenagel-decarboxylation-Heck sequence and its application for fluoride sensing π-conjugated units
ONE POT MULTICOMPONENT SYNTHESIS OF SOME NOVEL HYDROXY STILBENE DERIVATIVES WITH ALPHA, BETA-CARBONYL CONJUGATION UNDER MICROWAVE IRRADIATION
申请人:Sharma Abhishek
公开号:US20120165567A1
公开(公告)日:2012-06-28
The present invention provides a method for the preparation of some novel multiconjugated 2- or 4-hydroxy substituted stilbenes. The method provides one pot multicomponent approach wherein 3-4 step reaction sequences viz. condensation, decarboxylation and Heck coupling occur simultaneously which results in an enhanced yield of desired products and reduced reaction times
Direct olefination of benzaldehydes into hydroxy functionalized oligo (p-phenylenevinylene)s via Pd-catalyzed heterodomino Knoevenagel-decarboxylation-Heck sequence and its application for fluoride sensing π-conjugated units
作者:Abhishek Sharma、Naina Sharma、Rakesh Kumar、Amit Shard、Arun K. Sinha
DOI:10.1039/c001980a
日期:——
A new approach for one step olefination of benzaldehydes into hydroxy functionalized OPVs is achieved through the first domino Knoevenagel-decarboxylation-Heck sequence using a single catalyst system. The methodology also led to new oxygen based OPV scaffolds capable of selective and visible fluoride recognition in organic or aqueous medium.