Li, Lingxiao published the artcileHydrogen-Free Production of 4-Alkylphenols from Lignin via Self-Reforming-Driven Depolymerization and Hydrogenolysis, Related Products of alcohols-buliding-blocks, the publication is ACS Catalysis (2020), 10(24), 15197-15206, database is CAplus.
Lignin is constructed from methoxylated phenylpropanoid with plenty of hydroxy and methoxy groups. Its conversion to valuable products is extremely attractive but especially challenging without addnl. hydrogen sources. Herein we report a hydrogen-free production of 4-alkylphenols directly from native lignin via self-reforming-driven depolymerization and hydrogenolysis over Pt/NiAl2O4. This is the first example of acquiring 4-alkylphenols from native lignin. Using this strategy, high yields of 4-alkylphenols, 17.3 wt %, were obtained from birch lignin. Reaction pathway and mechanism studies revealed that this strategy initiates from the reforming of aliphatic hydroxys, followed by the cleavage of C-O linkages, and ends via demethoxylation over Pt/NiAl2O4. Moreover, the subsequent aqueous phase reforming of the as-formed methanol accelerates the whole process. This strategy realizes the one-pot production of 4-alkylphenols from lignin by fully utilizing the structural hydrogen in lignin and H2O, providing a low-cost and safe method of lignin valorization.
ACS Catalysis published new progress about 645-56-7. 645-56-7 belongs to alcohols-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 4-Propylphenol, and the molecular formula is C9H12O, Related Products of alcohols-buliding-blocks.
Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts