scholarly journals Synthesis of cyclic ethers by cyclodehydration of 1, n -diols using heteropoly acids as catalysts

2018 ◽  
Vol 5 (9) ◽  
pp. 180740 ◽  
Author(s):  
Yufeng Sun ◽  
Yatao Huang ◽  
Minmin Li ◽  
Jia Lu ◽  
Nuo Jin ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Diethylene Glycol ◽  
Triethylene Glycol ◽  
Monomethyl Ether ◽  
Heteropoly Acids ◽  
Cyclic Ethers ◽  
Glycol Monomethyl Ether ◽  
Polyethylene Glycol 200 ◽  
Catalyst Systems ◽  
Better Than

Heteropoly acids were used as catalysts for cyclodehydration of various 1, n -diols. Cyclodehydration of butane-1,4-diol, pentane-1,5-diol and hexane-1,6-diol catalysed by H 3 PW 12 O 40 gave tetrahydrofuran, tetrahydropyran and oxepane, respectively. Cyclodehydration of diethylene glycol, triethylene glycol, diethylene glycol monomethyl ether and polyethylene glycol 200 catalysed by H 3 PW 12 O 40 gave 1,4-dioxane. In particular, cyclodehydration of hexane-1,6-diol gave an excellent yield of oxepane (80%). The selectivity exhibited by the H 3 PW 12 O 40 catalyst was even better than that exhibited by other reported catalyst systems for similar cyclodehydration reactions.

Diethylene Glycol Monomethyl Ether 13-Week Vapor Inhalation Toxicity Study in Rats

1985 ◽  
Vol 5 (6part1) ◽  
pp. 1174-1179
Author(s):  
R. R. MILLER ◽  
D. L. EISENBRANDT ◽  
T. S. GUSHOW ◽  
S. K. WEISS
Keyword(s):  
Diethylene Glycol ◽  
Monomethyl Ether ◽  
Toxicity Study ◽  
Inhalation Toxicity ◽  
Glycol Monomethyl Ether

Synthesis, characterization and oxidizing strength of a nano-structured hypervalent iodine(v) compound: iodylbenzene nanofibers

2018 ◽  
Vol 42 (23) ◽  
pp. 19137-19143
Author(s):  
Reza Jafari motlagh ◽  
Saeed Zakavi
Keyword(s):  
Length Distribution ◽  
Triethylene Glycol ◽  
Monomethyl Ether ◽  
Hypervalent Iodine ◽  
Distilled Water ◽  
Glycol Monomethyl Ether

In this study, disproportionation of freshly synthesized iodosylbenzene in boiling distilled water in the presence of triethylene glycol monomethyl ether was used to prepare ribbon-like iodylbenzene nanostructures with a wide length distribution (250 nm up to several microns) and a width in the range of 100–200 nm.

Preparation, Purification, and Spectrophotometric Characterization of Cytochrome P450 1A2 Conjugated with Polyethylene Glycol Monomethyl Ether

1996 ◽  
Vol 222 (2) ◽  
pp. 406-409 ◽  
Author(s):  
Roya Nakhgevany ◽  
Osei Bonsu ◽  
Jousephine Barber ◽  
Patricia Ann Mabrouk ◽  
Yune-Fang Ueng ◽  
...  
Keyword(s):  
Cytochrome P450 ◽  
Polyethylene Glycol ◽  
Monomethyl Ether ◽  
Cytochrome P450 1A2 ◽  
Glycol Monomethyl Ether

Developmental Toxicity of Diethylene Glycol Monomethyl Ether (diEGME)

1986 ◽  
Vol 6 (3) ◽  
pp. 430-439
Author(s):  
BRYAN D. HARDIN ◽  
PHILLIP T. GOAD ◽  
JEANN R. BURG
Keyword(s):  
Diethylene Glycol ◽  
Developmental Toxicity ◽  
Monomethyl Ether ◽  
Glycol Monomethyl Ether
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