Oxidation of Vanillin with Supported Gold Nanoparticles

Rautiainen, Sari; Chen, Jingjing; Vehkamäki, Marko; Repo, Timo

doi:10.1007/s11244-016-0633-8

Cited by 11 publications

(5 citation statements)

References 27 publications

(35 reference statements)

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“…Oxidation of vanillic alcohol can theoretically form the corresponding aldehyde (vanillin) and carboxylic acid (vanillic acid). Note that the latter is rarely formed over classical metallic catalysts [47] while most often obtained with enzymatic catalysts [48] (Scheme 1).…”

Section: Application To the Oxidation Of Benzyl Alcoholsmentioning

confidence: 99%

Selective Aerobic Oxidation of Benzyl Alcohols with Palladium(0) Nanoparticles Suspension in Water

et al. 2021

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This study concerns one of the rare applications of a suspension of palladium nanoparticles in water for oxidation reactions. The aqueous suspension containing well dispersed nanoparticles of 3.85 nm was obtained following a straightforward procedure involving the reduction of Na 2 PdCl 4 with NaBH 4 in the presence of PVP as stabilizing agent. In the way of oxidative catalytic valorisation of lignin, the aqueous suspension was directly applied as catalytic medium for the selective oxidation of vanillic alcohol into vanillin (80 °C, O 2 , 1 h) with more than 90% yield. Reusability of the catalytic medium has been demonstrated, acting as "quasi-homogeneous catalyst". More sophisticated lignin-derived substrates like veratryl alcohol and hydrobenzoin gave yields of 50-80% to the respective aldehyde and ketone. In parallel, this as-synthesized suspension was directly used to prepare a Pd/TiO 2 catalyst, the latter showing less efficiency for the catalytic transformations.

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Section: Application To the Oxidation Of Benzyl Alcoholsmentioning

confidence: 99%

Selective Aerobic Oxidation of Benzyl Alcohols with Palladium(0) Nanoparticles Suspension in Water

et al. 2021

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“…Asam vanilat merupakan produk yang dihasilkan dari vanilin. Oksidasi lignin menjadi vanilin dapat menghasilkan asam vanilat yang disertai dengan proses degradasi yang tidak diinginkan sehingga digunakan reaksi oksidasi untuk mensintesis asam vanilat dari vanilin (Rautiainen et al, 2016). Suatu aldehida apabila dioksidasi akan berubah menjadi gugus asam karboksilat sehingga oksidasi vanilin akan Pharmaceutical and Sciences |Volume 6|No.2|APRIL-JUNI|2023|pp.358-364 Electronic ISSN : 2656-3088 Homepage: https://www.journal-jps.com menghasilkan asam vanilat.…”

Section: Gambar 1 Struktur Vanilinunclassified

Sintesis Senyawa Asetil Vanilat melalui Vanilin dan Peranannya Sebagai Komponen Senyawa Analgesik

Salman,

Ariyanto,

Anggraini

et al. 2023

JPS

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Masyarakat di Indonesia tidak terlepas dari rasa sakit seperti nyeri. Penyakit nyeri inilah yang pada terapinya menggunakan obat - obatan analgesik seperti aspirin. Dimana pada aspirin, golongan salisilatnya paling banyak digunakan sebagai analgesik. Aspirin berbeda dengan turunan asam salisilat lainnya karena memiliki gugus asetil. Gugus asetil inilah yang nantinya mampu menginaktivasi siklooksigenase, sehingga obat ini disebut NSAID. Pada sintesis asetil vanilat dari aspirin melalui vanilin ini bertujuan untuk mendapatkan hasil sintesis senyawa asetil vanilat. Oksidasi vanilin dilakukan dengan menggunakan pereaksi Tollens (AgNO3). Hasil spektrum FTIR menunjukkan adanya perbedaan senyawa asetil vanilat dan asam vanilat. Sintesis asetil vanilat dilakukan dengan oksidasi vanilin sehingga menghasilkan asam vanilat yang selanjutnya dilakukan asetilasi asam vanilat sehingga terbentuk senyawa asetil vanilat. Senyawa yang dihasilkan dikarakterisasi menggunakan spektrum FTIR dan dibandingkan identifikasinya menggunakan HNMR. Identifikasi menggunakan FTIR lebih baik daripada HNMR karena gugus karboksilat asamnya muncul dibandingkan dengan HNMR. HNMR tertutup peak yang besar dari gugus karboksilat dalam lingkungan protonnya.

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“…More studies must be done towards understanding the effect of protective agents on the characteristics of carbohydrates, providing useful information for efficient valorization of carbohydrates. Methoxylated 4-Hydroxybenzaldehydes and 4-Hydroxybenzoic Acids Vanillin and vanillic acid are very important chemicals for polymer, pharmaceutical, and agrochemical industries [36][37][38]. Hence, annual vanillin demand is growing at a rate of 2-4% in Europe/USA and it reached almost 10% in China, with the current global demand of around 20 kilotons per year [39,40].…”

Section: Acetal Formation-assisted Delignification Followed By Cataly...mentioning

confidence: 99%

Towards Lignin-Derived Chemicals Using Atom-Efficient Catalytic Routes

Sudarsanam

Ruijten

Liao

et al. 2020

Trends in Chemistry

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Oxidation of Vanillin with Supported Gold Nanoparticles

Cited by 11 publications

References 27 publications

Selective Aerobic Oxidation of Benzyl Alcohols with Palladium(0) Nanoparticles Suspension in Water

Selective Aerobic Oxidation of Benzyl Alcohols with Palladium(0) Nanoparticles Suspension in Water

Sintesis Senyawa Asetil Vanilat melalui Vanilin dan Peranannya Sebagai Komponen Senyawa Analgesik

Towards Lignin-Derived Chemicals Using Atom-Efficient Catalytic Routes

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