@article {43411,
	title = {Highly selective direct azidation of alcohols over a heterogeneous povidone-phosphotungstic solid acid catalyst},
	journal = {New Journal of Chemistry},
	volume = {40},
	year = {2016},
	month = {DEC},
	pages = {10240-10245},
	abstract = {A simple protocol for the selective azidation of alcohols is developed using a solid acid hybrid of a povidone and phosphotungstic acid (PVP-PWA) using azidotrimethylsilane as an azide source at room temperature. In a broad substrate scope, various activated as well as unactivated benzylic and diphenyl alcohols were treated smoothly with TMS-N-3 to selectively produce only azide products with excellent yields in a very short reaction time of 2 h. FT-IR confirmed the stability of the catalyst with retention of the Keggins structure after the reaction. Recycling experiments demonstrated the reusability of the PVP PWA (3:1) several times without losing its original activity.},
	doi = {10.1039/c6nj02500e},
	author = {Kamble, Sumit and More, Sagar and Rode, Chandrashekhar V.}
}
@article {43487,
	title = {Facile one-pot synthesis of aliphatic bridged diaryloxy compounds, cyclic and crown ethers under mild conditions},
	journal = {Supramolecular Chemistry},
	volume = {29},
	year = {2017},
	month = {JAN},
	pages = {462-470},
	abstract = {We report here the facile, room temperature, catalyst free, one pot synthesis of aliphatic bridged diaryloxy compounds, cyclic and crown ethers. Anhydrous potassium carbonate (K2CO3) as a mild base along with dimethyl sulfoxide generates the phenoxide ion which facilitates the nucleophilic substitution of bromoalkanes to yield the corresponding crown ethers.},
	doi = {10.1080/10610278.2016.1267858},
	author = {Sakate, Sachin and Kamble, Sumit and Chikate, Rajiv and Rode, Chandrashekhar}
}
@article {49584,
	title = {DABCO dicationic ionic solid supported polymer (DDIS@PS) mediated synthesis of diverse 2-amino-4H-chromenes and xanthenes: a cascade Knoevenagel-Michael approach},
	journal = {New Journal of Chemistry},
	volume = {49},
	year = {2025},
	month = {FEB},
	pages = {3644-3653},
	type = {Article},
	abstract = {<p>
	This work documented the synthesis of diverse bioactive polysubstituted 2-amino-4H-chromenes using a DABCO dicationic ionic solid (DDIS) supported on Merrifield resin (DDIS@PS) as a catalyst. The catalyst is characterized by FT-IR, SEM-EDX, and TGA analysis. The resulting PS contains supported DABCO units with free tertiary nitrogen functionality on their external surface. The catalyst effectively catalyzed cascade Knoevenagel-Michael addition reactions of various aldehydes and active methylene compounds (malononitrile and phenyl sulfonyl acetonitrile) with dimedone, yielding good to excellent results in water or ethanol at room temperature or 78 degrees C. The time required for the reaction of phenyl sulfonyl malononitrile is comparatively very high compared to malononitrile. The synthesis of bis-dimedone derivatives and 1,8-dioxo-octahydro-xanthenes was also achieved in both solvents at RT and 78 degrees C, with high yields. The catalyst demonstrated greater efficiency and maintained its activity over at least five cycles.</p>
},
	issn = {1144-0546},
	doi = {10.1039/d4nj04366a},
	author = {Rajmane, Archana and Patil, Nita and Patil, Anuradha and Kamble, Sumit and Kumbhar, Arjun}
}
