<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Rao, Ramana Sreenivasa</style></author><author><style face="normal" font="default" size="100%">Sahani, Anita</style></author><author><style face="normal" font="default" size="100%">Ali, Sheikh Haider</style></author><author><style face="normal" font="default" size="100%">Pradhan, Sumanta</style></author><author><style face="normal" font="default" size="100%">Ramanathan, Chinnasamy Ramaraj</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">gamma-Al2O3/triflic acid as cooperative catalysts for the tandem Michael addition/carbocyclization: an easy access to 2-substituted pyrrolo[2,1-a]isoquinolines and 3-substituted pyrrolidine-2,5-diones</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Heterocyclic Chemistry</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">1-a]isoquinolines</style></keyword><keyword><style  face="normal" font="default" size="100%">3-substituted pyrrolidine-2</style></keyword><keyword><style  face="normal" font="default" size="100%">5-diones</style></keyword><keyword><style  face="normal" font="default" size="100%">carbocyclization</style></keyword><keyword><style  face="normal" font="default" size="100%">gamma-Al2O3/TfOH binary system</style></keyword><keyword><style  face="normal" font="default" size="100%">Michael addition</style></keyword><keyword><style  face="normal" font="default" size="100%">pyrrolo[2</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2021</style></year><pub-dates><date><style  face="normal" font="default" size="100%">JUL</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">58</style></volume><pages><style face="normal" font="default" size="100%">1415-1428</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;A tandem Michael addition/carbocyclization of 3,4-dimethoxyphenethyl maleimide with carbon and sulfur nucleophiles is accomplished via a relay catalysis using gamma-Al2O3/TfOH binary system. The X-ray Photoelectron Spectroscopy (XPS) analysis of binary system indicates the presence of AlF3, AlO(OH) species(.) This approach provides an easy access to 2-aryl or 2-thio aryl pyrrolo[2,1-a]isoquinolines in good yields in a tandem fashion. With suitable ratio of gamma-Al2O3/TfOH binary system, the Michael addition of N/C/S nucleophiles to N-benzyl maleimide is also achieved. A key to the success of these reactions would be the generation of AlF3, AlO(OH) species from gamma-Al2O3 and TfOH, which might have delineated the disadvantageous background reactions usually displayed by a strong Bronsted acid such as TfOH.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">7</style></issue><work-type><style face="normal" font="default" size="100%">Article</style></work-type><custom3><style face="normal" font="default" size="100%">&lt;p&gt;Foreign&lt;/p&gt;</style></custom3><custom4><style face="normal" font="default" size="100%">2.193</style></custom4></record></records></xml>