Vinylation of cellulose in superbase catalytic systems: towards new biodegradable polymer materials

Catalytic Reactions of Acetylene: A Feedstock for the Chemical Industry Revisited

“…For this reaction, the KOH in DMSO catalytic system is used. 133 A further proof of the versatility in terms of substrates that can be vinylated using this catalytic system is the vinylation of cholesterol. 134 In Reppe's work, 29,115 attempts to react acetylene with alcohols in the gas phase at temperatures between 150 and 350 °C over solid catalysts such as soda lime, sodium zincate, or alkali hydroxides supported on carbon were also mentioned, but not many details about this process were given.…”

“…Also, the vinylation of cellulose to produce polymers that can be further modified because of the reactive vinyloxy groups has been reported. For this reaction, the KOH in DMSO catalytic system is used . A further proof of the versatility in terms of substrates that can be vinylated using this catalytic system is the vinylation of cholesterol …”

Recent advances in applications of vinyl ether monomers for precise synthesis of custom-tailored polymers

“…Due to their low toxicity [58] and efficient manufacturing, vinyl ethers have been extensively used in research and industry without any significant amendments to the concept of their synthesis [59,60]. A number of modifications have been introduced, including variation of eliminating agents [61], upgrade of the catalysts and conditions for trans-vinylation processes [62][63][64][65], adjustment of the solvents and expansion of the substrate scope for the addition technique [66,67]. The increasing demand for vinyl monomers requires a sustainable and scalable manufacturing methodology, preferably based on renewables.…”

Hydroalkoxylation of alkynes by a nitroxyl containing alcohol, 4-hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl: synthesis of spin-labeled enol ethers

“…[25][26][27][28][29][30][31][32][33][34][35][36] Since the first synthesis of 4-vinyloxy-TEMPO, 24 no attempt to develop an expedient hydroalkoxylation of alkynes with 4-hydroxy-TEMPO has been undertaken. Meanwhile, having in mind that direct superbasecatalyzed hydroalkoxylation of alkynes with hydroxyl compounds has proved to be highly efficient, [37][38][39][40][41][42] we decided to revisit the vinylation of 4-hydroxy-TEMPO with various alkynes exploiting our expertise gained during the last decade.…”