Tellurolate-induced deprotection of 2,2,2-trichloro-tert-butyloxycarbonyl (TCBOC) derivatives

Lakshmikantham, M. V.; Jackson, Yvette A.; Jones, Robert J.; O'Malley, Gerard J.; Ravichandran, K.; Cava, Michael P.

doi:10.1016/s0040-4039(00)85038-8

Cited by 22 publications

(3 citation statements)

References 4 publications

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“…The most plausible mechanism may involve the simultaneous adsorption of MB and ascorbic acid on the cellular structure of CPUF, thus providing the surface for their mutual interaction leading to redox reaction between them. In another supportive judgment, this redox reaction may be accelerated due to the presence of conjugated site, located next to the aromatic ring in the CPUF urethane link [19][20][21].…”

Section: Reduction Of Methylene Blue (Mb) With Cpuf Andmentioning

confidence: 98%

Ecofriendly Reduction of Methylene Blue with Polyurethane Catalyst

Sultan

Waheed

Bibi

et al. 2019

International Journal of Polymer Science

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A number of physical, chemical, and biological technologies have been developed to address the issue of synthetic dyes in wastewater. One of the important chemical methods involves reduction of these stringent pollutants into less hazardous products. In this study, a cross-linked polyurethane foam (CPUF) was prepared from toluene diisocyanate (TDI), tetraethylenepentamine (TEPA), and polycaprolactone diol (PCL; Mw: 1000 g/mole). To avoid harmful reducing agents, ecofriendly reduction of methylene blue (MB) was executed with CPUF as catalyst where ascorbic acid and fresh juice extracts were applied as reducing agents. The FTIR and SEM analysis confirmed the chemical composition and porous morphology of CPUF, respectively. The 100% reduction of MB was recorded in just 15 minutes with ascorbic acid and CPUF, while similar result was obtained in 37 minutes in blank experiment composed of only MB and ascorbic acid. Thus, catalytic role of CPUF in reduction process was proved. Fresh fruit extracts also participated in the reduction process, but rate of reaction was accelerated in the presence of CPUF. The reusability study of the catalyst supported its stability and efficiency. All the successful reduction processes followed 1st-order kinetics with highest apparent rate constant for ascorbic acid. Furthermore, phytotoxicity evaluation proved safe reduction of MB with 60% germination index. Hence, it can be concluded that catalytic role of CPUF has been established with safe and biodegradable reducing agents which can be extended to other redox processes.

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Section: Reduction Of Methylene Blue (Mb) With Cpuf Andmentioning

confidence: 98%

Ecofriendly Reduction of Methylene Blue with Polyurethane Catalyst

Sultan

Waheed

Bibi

et al. 2019

International Journal of Polymer Science

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“…Electrochemical reduction methods have also been developed that make use of both divided and single cell techniques. 6,27 Other reductive methods include the use of sodium 2-thiophenetellurolate, 28 cadmium dust in DMF/HOAc, 29 and 10% Cd/Pb couple in 1 M aq NH 4 OAc. 30 The later method has the advantage of being quick and efficient.…”

Section: %mentioning

confidence: 99%

Bis(2,2,2-trichloroethyl) Azodicarboxylate

Little

Bregant

Russu

2007

Encyclopedia of Reagents for Organic Synthesis

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“…The Troc unit can be removed by reduction with Zn metal, 1,7 electrolysis, 8,9 Zn-Pb couple, 10 Cd dust, 11 Cd-Pb couple, 12 cobalt(I)-phthalocyanine anion, 13 and telluride reagents. 14 In recent years, indium-mediated reduction and deprotection reactions have received considerable attention as a convenient method for effecting various organic transformations. 15 We have recently reported that deprotection of Troc-and trichloroacetyl-protected alcohols can be carried out chemoselectively with indium metal under mild conditions.…”

mentioning

confidence: 99%