Ethylene diamine grafted nanoporous UiO‐66 as an efficient basic catalyst in the multi‐component synthesis of 2‐aminithiophenes

Abstract

This study demonstrates ED-UiO-66 as a novel and effective solid nanoporous basic catalyst prepared through the amine grafting onto the pores of UiO-66. The manufactured nanoparticles were identified by FT-IR, XRD, TGA, FESEM, TEM, CHN and BET and the characterization results certified formation of a single phase nanoporous substance with the medium grain size less than 90 nm. The synthesized material was employed as an efficient catalyst for the preparation of 2-aminotiophenes through the Gewald method. This thermochemically stable nanocatalyst was environmentally safe, reusable and economic. Therefore, this methodology can be simply extended for industrial goals.

One-pot multicomponent green LED photoinduced synthesis of chromeno[4,3-b]chromenes catalyzed by a new nanophotocatalyst histaminium tetrachlorozincate

“…As photoredox catalysis obeys the general property of an excited state that is both more easily reducible and oxidizable than its corresponding ground states, herein and in continuation of our previous reports on the green multi-component synthesis of heterocycles, [39][40][41][42] we report our ndings on using histaminium tetrachlorozincate as an effective and recoverable catalyst in the green, one-pot and multi-component synthesis of various chromene derivatives via the multi-component condensation of aromatic aldehydes with a suitable 1,3-diketone and 4-hydroxycoumarin under solventless condition at ambient temperature (Scheme 1). Herein, the used photocatalyst can serve either as an electron-donor or acceptor in the catalytic route.…”

The dual role of ammonium acetate as reagent and catalyst in the synthesis of 2, 4, 5-triaryl-1H-imidazoles

“…In connection with our ongoing work on the synthesis of various heterocyclic compounds [22][23][24][25][26][27][28][29], we wish to report a facile procedure for preparation of imidazole derivatives without addition of any specific catalyst. As mentioned above, several methods are introduced for the synthesis of trisubstitutedimidazoles and their derivatives.…”

One Pot Synthesis, Characterization of Benzothiazole/ Benzimidazole Tethered Imidazole Derivatives using Clay as Catalyst

“…The magnetic catalyst H 3 PW 12 O 40 @Fe 3 O 4 /EN-MIL-101 used for synthesis of indazolo phthalazine-triones 3 . A nanoporous basic catalyst developed by grafting amine on UiO-66 and used for the synthesis of 2-Aminithiophenes 4 . The mesoporous catalyst Nb-Zr/KIT-6 successfully used for benzylpyrazolyl coumarins synthesis 5 .…”