New MCR based on intramolecular Heck reaction under aerobic conditions: a direct access to cytotoxic fused N-heterocycles
作者:Raju Adepu、Bagineni Prasad、Mohd Ashraf Ashfaq、Nasreen Z. Ehtesham、Manojit Pal
DOI:10.1039/c4ra10702k
日期:——
We report a new MCR involving the reaction of isatoic anhydrides, allyl amine and o-bromo arylaldehydes in the presence of Pd(OAc)2, X-Phos and air to afford various isoquinolino[1,2-b]quinazolinones as new cytotoxic agents. The strategy was extended successfully towards the synthesis of a methyl analogue of 7,8-dehydrorutaecarpine.
作者:Banik, Bimal K.、Raju, Vegesna S.、Manhas, Maghar S.、Bose, Ajay K.
DOI:——
日期:——
Palladium functionalized phosphinite polyethyleneimine grafted magnetic silica nanoparticles as an efficient catalyst for the synthesis of isoquinolino[1,2-<i>b</i>]quinazolin-8-ones
In this paper, a novel methodology is introduced for the synthesis of novel 5-methyl-8H-isoquinolino[1,2-b]quinazolin-8-one derivatives based on an efficient immobilized palladium catalyzed intramolecular carbon–carbon bond formation. The novel catalyst is fabricated by immobilization of Pd on phosphinite polyethyleneimine functionalized Fe3O4@SiO2 core–shell nanoparticles (denoted as Pd@OPPh2–PEI–mSiO2