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.
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
Hydroxylated di- and tri-styrylbenzenes, a new class of antiplasmodial agents: discovery and mechanism of action
作者:Naina Sharma、Dinesh Mohanakrishnan、Amit Shard、Abhishek Sharma、Arun K. Sinha、Dinkar Sahal
DOI:10.1039/c6ra06059e
日期:——
showed IC50 values of 0.9, 2.0 and 2.7 against 3D7 (chloroquine sensitive), Dd2 and Indo (chloroquine resistant) strains of Plasmodium falciparum respectively. Moreover, 27 and 11, which exhibited selectivity indices of 40 and >111 were also found to be nontoxic to the HeLa cell line. Microscopic studies revealed that the rings and trophozoites obtained from the 27 and 11 (an octupolar tristyrylbenzene