Deprotection of oximes, imines, and azines to the corresponding carbonyls using Cu-nanoparticles on cellulose template as green reusable catalyst

Abstract

Cellulose-supported Cu-nanoparticles efficiently catalyze the deprotection of oximes, imines, and azines in water under neutral condition.

The use of salicylaldehyde derivatives as a nitrogen source for antibiotic production by Streptomyces hygroscopicus CH-7

“…The synthesized compounds were characterized by physical and spectral studies (given below). Purity of the compounds was checked with TLC, and the melting points are in accordance with literature data [17,18]. An ν(OH) stretching vibration appears at 3443-3493 cm -1 in the FTIR spectra of compounds.…”

Cellulose supported copper nanoparticles as a versatile and efficient catalyst for the protodecarboxylation and oxidative decarboxylation of aromatic acids under microwave heating

“…The cellulose supported copper nanoparticles were prepared by the reduction of copper(II) acetate in a mixture with microcrystalline cellulose (powder) using a method reported earlier [22]. The analytical data (XRD, TEM) of the prepared nanoparticles (Figs.…”

“…Although the catalytic applications of cellulose supported metal nanoparticles have been widely explored in various diversified areas [19,20] a few reports have been documented in the field of synthetic organic chemistry as an efficient reusable catalyst. In continuation of our research on nanomaterials [21,22], we reported herein the protodecarboxylation of benzoic acids and vinyl carboxylic acids to corresponding arenes and alkenes respectively. We also reported oxidative decarboxylation and protodecarboxylation of phenylacetic acids to the aldehydes and alkyl benzenes respectively.…”

A Deoximation Method for Deprotection of Ketones and Aldhydes Using a Graphene‐Oxide‐Based Co‐catalysts System

“…In 2015, a deoximation approach using Ti‐containing metal‐organic framework photocatalysts was reported by Morsali and coworkers, and Coskun and coworkers discovered that anhydrous Ce(IV) sulfate can serve as an oxidant for deoximation . In 2014, Konwar and coworkers developed a novel system for deoximation using Cu nanoparticles; Kaboudin and coworkers reported the use of mesoporous C−N codoped nano‐TiO 2 as a deoximation catalyst; García and coworkers reported a mixed (Fe 2+ and Cu 2+ ) double‐metal hexacyanocobaltate as a catalyst for the conversion of oximes to carbonyl compounds; and Gil and coworkers discovered that a manganese nanocatalyst combined with N ‐hydroxyphthalimide was an efficient catalytic system for the oxidation of oximes . In 2013, Cao et al .…”

“…[8] In 2015, a deoximation approach using Ti-containing metal-organic framework photocatalysts was reported by Morsali and coworkers, and Coskun and coworkers discovered that anhydrous Ce(IV) sulfate can serve as an oxidant for deoximation. [9] In 2014, Konwar and coworkers developed a novel system for deoximation using Cu nanoparticles; [10] Kaboudin and coworkers reported the use of mesoporous CÀ N codoped nano-TiO 2 as a deoximation catalyst; [11] García and coworkers reported a mixed (Fe 2 + and Cu 2 + ) double-metal hexacyanocobaltate as a catalyst for the conversion of oximes to carbonyl compounds; [12] and Gil and coworkers discovered that a manganese nanocatalyst combined with Nhydroxyphthalimide was an efficient catalytic system for the oxidation of oximes. [13] In 2013, Cao et al developed a deoximation catalyzed by FeCl 3 and 2,2,6,6-tetramethylpiperidin-1-oxyl; [14] Karimi and coworkers demonstrated that the regeneration of carbonyl compounds from oximes could be catalyzed by coated amorphous TiO 2 that had formed periodic mesoporous organosilicate channels; [15] and Gil and coworkers explored cobalt in the presence of N-hydroxyphthalimide as a catalyst for the aerobic oxidation of oximes to carbonyl compounds.…”