<?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%">Burange, Anand S.</style></author><author><style face="normal" font="default" size="100%">Gadam, Komal G.</style></author><author><style face="normal" font="default" size="100%">Tugaonkar, Prajyot S.</style></author><author><style face="normal" font="default" size="100%">Thakur, Seema D.</style></author><author><style face="normal" font="default" size="100%">Soni, Ravish K.</style></author><author><style face="normal" font="default" size="100%">Khan, Rubej R.</style></author><author><style face="normal" font="default" size="100%">Tai, Mubashira S.</style></author><author><style face="normal" font="default" size="100%">Gopinath, Chinnakonda S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Green synthesis of xanthene and acridine-based heterocycles of pharmaceutical importance: a review</style></title><secondary-title><style face="normal" font="default" size="100%">Environmental Chemistry Letters</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">green chemistry</style></keyword><keyword><style  face="normal" font="default" size="100%">heterocycles</style></keyword><keyword><style  face="normal" font="default" size="100%">heterogeneous catalysis</style></keyword><keyword><style  face="normal" font="default" size="100%">Metal oxides</style></keyword><keyword><style  face="normal" font="default" size="100%">nanocatalysis</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%">MAR</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Xanthene and acridine-based heterocyclic compounds find applications in cancer chemotherapy, biological staining and laser dyes and are known for their antibacterial and anti-tumor properties. Here we review green catalytic routes for the synthesis of 1,8-dioxo-octahydroxanthenes, 1,8-dioxo-decahydroacridines and related heterocyclic molecules with catalysts such as metal oxides, mixed metal oxides, resins, supported organocatalysts, heteropolyacids, carbon-based materials, zeolites, sulfides and ionic liquids. We compare protocols for their catalytic activities, and proposed mechanisms are discussed.&lt;/p&gt;</style></abstract><work-type><style face="normal" font="default" size="100%">Review; Early Access</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%">9.027</style></custom4></record></records></xml>