A general method for selective silylation of primary hydroxyl groups in carbohydrates and related compounds

1983 ◽  
Vol 115 ◽  
pp. 234-239 ◽  
Author(s):  
Kelvin K. Ogilvie ◽  
Gholam H. Hakimelahi
Keyword(s):  
Hydroxyl Groups ◽  
Primary Hydroxyl ◽  
Related Compounds ◽  
General Method

STUDIES ON LIGNIN AND RELATED COMPOUNDS: XXII. FRACTIONATION OF METHANOL LIGNIN

1936 ◽  
Vol 14b (4) ◽  
pp. 115-119
Author(s):  
Jack Compton ◽  
Margaret Greig ◽  
Harold Hibbert
Keyword(s):  
Pure State ◽  
Soluble Fraction ◽  
Hydroxyl Groups ◽  
Related Compounds

Preparation of methanol lignin by the method of Brauns and Hibbert on a larger scale than that employed previously has disclosed the presence of a second fraction, soluble in ether-dioxane. The original methanol lignin and this new fraction are obtained in a pure state by fractionation with dioxane and benzene. The former has been shown to correspond to the methanol lignin from which the Brauns and Hibbert formula C42H32O6(OCH3)6(OH)4 was derived. The benzene-dioxane–soluble fraction has been methylated and acetylated, and shown to have a different composition, the ratio of methoxyl to hydroxyl groups being 5:3.

STUDIES ON LIGNIN AND RELATED COMPOUNDS: XXIX. A STUDY OF THE ACIDIC HYDROXYL GROUPS IN SPRUCE LIGNIN

1937 ◽  
Vol 15b (12) ◽  
pp. 532-535 ◽  
Author(s):  
R. G. D. Moore ◽  
George F. Wright ◽  
Harold Hibbert
Keyword(s):  
Phenolic Content ◽  
Hydriodic Acid ◽  
Hydroxyl Groups ◽  
Aromatic Content ◽  
Related Compounds

A demethylated spruce lignin suitable for further study has been obtained by treating methylated methanol lignin with hydriodic acid. This treatment removes the aliphatic hydroxyl, and leaves 6.9 aromatic and 0.6 carboxylic hydroxyl groups per kg. On the basis of the phenolic content it is estimated that the maximum aromatic content of spruce lignin is about 40 to 45%.

General method for distinguishing threo and erythro isomers of certain .alpha.-glycols and related compounds

1972 ◽  
Vol 94 (8) ◽  
pp. 2865-2867 ◽  
Author(s):  
Koji Nakanishi ◽  
David A. Schooley ◽  
Masato Koreeda ◽  
Iwao Miura
Keyword(s):  
Related Compounds ◽  
General Method

Synthesis and characterization of α-butyl-ω-{3-[(2,2- dihydroxymethyl)-propionyloxy]}propyl polydimethyl siloxane

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Meng Zhang ◽  
Yuanjuan Wu ◽  
Qingsi Zhang ◽  
Tianduo Li
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Synthesis And Characterization ◽  
Hydroxyl Groups ◽  
Single Chain ◽  
Polydimethyl Siloxane ◽  
Primary Hydroxyl ◽  
Anionic Ring

AbstractA novel polydimethylsiloxane containing two primary hydroxyl groups at one single chain end was synthesized by five-step reactions which included esterification, hydroxyl protection, anionic ring-opening polymerization, hydrosilylation and deprotection. The prepared compounds in each step were characterized. The results showed that at each step synthesis was successfully carried out and objective products could be achieved.

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