Shimizu, Satoko published the artcileChemical factors underlying the more rapid β-O-4 bond cleavage of syringyl than guaiacyl lignin under alkaline delignification conditions, Formula: C16H18O4, the publication is Journal of Wood Chemistry and Technology (2017), 37(6), 451-466, database is CAplus.
This study aimed to clarify why the β-O-4 bond cleavage of syringyl lignin is more rapid than that of guaiacyl lignin under alk. pulping conditions. We examined whether or not three chem. factors, acidity of the α-hydroxy group, nucleophilicity of the generated α-alkoxide, and leaving ability of the leaving phenoxide, are different between syringyl and guaiacyl lignins and control the rate of the alk.-induced β-O-4 bond cleavage, employing dimeric non-phenolic β-O-4-type lignin model compounds (LMCs) and novel methods for estimating these three factors. The results indicated that the α-hydroxy groups of syringyl-type LMCs are relatively more acidic than those of guaiacyl-type and that syringyl nucleus is a better leaving group than guaiacyl nucleus in the β-O-4 bond cleavage. These factors result in the β-O-4 bond of syringyl lignin being more prone to the alk.-induced cleavage than that of guaiacyl lignin.
Journal of Wood Chemistry and Technology published new progress about 183303-74-4. 183303-74-4 belongs to ethers-buliding-blocks, auxiliary class Benzene,Alcohol,Ether, name is 1-(3,4-Dimethoxyphenyl)-2-phenoxyethanol, and the molecular formula is C4H5BN2O2, Formula: C16H18O4.
Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem