Spectroscopic investigation of flavonoids. Detection of free phenolic hydroxyl groups in various positions

1965 ◽  
Vol 1 (6) ◽  
pp. 330-334 ◽  
Author(s):  
V. I. Litvinenko ◽  
N. P. Maksyutina
Keyword(s):  
Spectroscopic Investigation ◽  
Phenolic Hydroxyl ◽  
Hydroxyl Groups ◽  
Phenolic Hydroxyl Groups

Methylation of Phenolic Hydroxyl Group and Demethylation of Anisoles

2009 ◽  
Vol 2009 (4) ◽  
pp. 229-230 ◽  
Author(s):  
Nobuhiro Sato ◽  
Hiroyuki Endo
Keyword(s):  
Microwave Heating ◽  
Room Temperature ◽  
Reverse Reaction ◽  
Phenolic Hydroxyl ◽  
Hydroxyl Group ◽  
Hydroxyl Groups ◽  
Phenolic Hydroxyl Groups ◽  
Phenyl Ethers ◽  
Methyl Phenyl

A mild methylation of phenolic hydroxyl groups with iodomethane was enabled in the presence of sodium bis(trimethylsilyl)amide at room temperature. The reverse reaction, namely demethylation of methyl phenyl ethers, was easily achieved by microwave heating with neat iodotrimethylsilane.

Fast, Easy, and Economical Quantification of Lignin Phenolic Hydroxyl Groups: Comparison with Classical Techniques

2018 ◽  
Vol 32 (5) ◽  
pp. 5969-5977 ◽  
Author(s):  
Luis Serrano ◽  
Esakkiammal Sudha Esakkimuthu ◽  
Nathalie Marlin ◽  
Marie-Christine Brochier-Salon ◽  
Gerard Mortha ◽  
...  
Keyword(s):  
Phenolic Hydroxyl ◽  
Hydroxyl Groups ◽  
Phenolic Hydroxyl Groups

Influence of phenolic hydroxyl groups on second-order optical nonlinearity at an example of 2,4- and 3,4-dihydroxyl hydrazone isomorphic crystals

2009 ◽  
Vol 130 (13) ◽  
pp. 134708 ◽  
Author(s):  
O-Pil Kwon ◽  
Mojca Jazbinsek ◽  
Jung-In Seo ◽  
Eun-Young Choi ◽  
Hoseop Yun ◽  
...  
Keyword(s):  
Optical Nonlinearity ◽  
Second Order ◽  
Phenolic Hydroxyl ◽  
Hydroxyl Groups ◽  
Phenolic Hydroxyl Groups

ChemInform Abstract: Selective Acylation of Aliphatic Alcohols in the Presence of Phenolic Hydroxyl Groups.

ChemInform ◽  
2010 ◽  
Vol 31 (21) ◽  
pp. no-no
Author(s):  
Gowravaram Sabitha ◽  
Basi V. Subba Reddy ◽  
Garudammagari S. Kiran Kumar Reddy ◽  
Jhillu S. Yadav
Keyword(s):  
Aliphatic Alcohols ◽  
Phenolic Hydroxyl ◽  
Hydroxyl Groups ◽  
Selective Acylation ◽  
Phenolic Hydroxyl Groups
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