@article { ISI:000267239200041, title = {Scolecite as an efficient heterogeneous catalyst for the synthesis of 2,4,5-triarylimidazoles}, journal = {Central European Journal of Chemistry}, volume = {7}, number = {3}, year = {2009}, month = {SEP}, pages = {550-554}, publisher = {VERSITA}, address = {9 DRUGA POPRZECNA ST, 04-604 WARSAW 41, POLAND}, abstract = {

Natural scolecite has been found as an effective catalyst for the one-pot synthesis of 2,4,5-triarylimidazole derivatives via a three component reaction using benzil or benzoin, aldehydes and ammonium acetate. This method provides several advantages such as being environmentally benign, reusable, possessing high yields with increased variations of the substituents in the product and preparative simplicity.

}, keywords = {2, 4, 5-Triarylimidazoles, heterogeneous catalyst, Three-component reaction}, issn = {1895-1066}, doi = {10.2478/s11532-009-0050-y}, author = {Gadekar, Lakshman S. and Mane, Shivshankar R. and Katkar, Santosh S. and Arbad, Balasaheb R. and Lande, Machhindra K.} } @article { ISI:000272759400005, title = {Scolecite catalyzed facile and efficient synthesis of polyhydroquinoline derivatives through hantzsch multi-component condensation}, journal = {Bulletin of the Korean Chemical Society}, volume = {30}, number = {11}, year = {2009}, month = {NOV}, pages = {2532-2534}, publisher = {KOREAN CHEMICAL SOC}, address = {635-4 YEOGSAM-DONG, KANGNAM-GU, SEOUL 135-703, SOUTH KOREA}, abstract = {

A facile and efficient synthetic route has been developed for the polyhydroquinoline via four component reactions of aldehydes, dimedone, ethyl acetoacetate and ammonium acetate in the presence of catalytic amount of scolecite in ethanol at 70 degrees C through Hantzsch reaction. This method gives remarkable advantages such as simple work-up procedure. environmentally friendly, inexpensive, non-toxic and recyclable catalyst, shorter reaction time along with excellent yields

}, keywords = {heterogeneous catalyst, Multicomponent reaction, Polyhydroquinoline, Reusable catalyst}, issn = {0253-2964}, author = {Gadekar, Lakshman S. and Katkar, Santosh S. and Mane, Shivshankar R. and Arbad, Balasaheb R. and Lande, Machhindra K.} } @article { ISI:000293064700006, title = {ZnO-beta zeolite: as an effective and reusable heterogeneous catalyst for the one-pot synthesis of polyhydroquinolines}, journal = {Green Chemistry Letters and Reviews}, volume = {3}, number = {4}, year = {2010}, month = {DEC}, pages = {287-292}, publisher = {TAYLOR \& FRANCIS LTD}, address = {4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND}, abstract = {

ZnO-beta zeolite, an inexpensive and mild catalyst, has been used for the synthesis of polyhydroquinolines in excellent yields from the one-pot four-component condensation of aldehydes, dimedone, ethyl acetoacetate, and ammonium acetate in ethanol at room temperature. The remarkable advantages offered by this method are a green catalyst, mild reaction conditions, simple work-up procedures, much faster reactions, and excellent yield of products. Furthermore, the catalyst could be reused several times keeping its initial activity in recycled reactions.

}, keywords = {Hantzsch condensation, heterogeneous catalyst, multicomponent, ZnO-beta zeolite}, issn = {1751-8253}, doi = {10.1080/17518253.2010.482065}, author = {Katkar, Santosh S. and Mohite, Pravinkumar H. and Gadekar, Lakshman S. and Arbad, Balasaheb R. and Lande, Machhindra K.} }