作者:Kyle J. Boniface、Ryan R. Dykeman、Alex Cormier、Hong-Bo Wang、Sean M. Mercer、Guojun Liu、Michael. F. Cunningham、Philip G. Jessop
DOI:10.1039/c5gc01201e
日期:——
CO2-switchable desiccants have been prepared and evaluated for the drying of isobutanol.
“CO2可开关型干燥剂已经被制备并用于干燥异丁醇,并进行了评估。”
SWITCHABLE MATERIALS, METHODS AND USES THEREOF
申请人:QUEEN'S UNIVERSITY AT KINGSTON
公开号:US20160244548A1
公开(公告)日:2016-08-25
The present application provides a composite material that comprises a solid and solid-supported non-polymeric switchable moiety, wherein the switchable moiety comprises a functional group that is switchable between a first form and a second form, said first form being neutral and hydrophobic, and said second form being ionized and hydrophilic. The composite material converts to, or is maintained in, said second form when the switchable moiety is exposed to CO
2
at amounts sufficient to maintain the ionized form. The composite material converts to, or is maintained in, said first form when CO
2
is removed or reduced to an amount insufficient to maintain the ionized form. CO
2
is removed or reduced by exposing the composite material to heat and/or a flushing inert gas such as N
2
, Ar, or air. Envisioned uses of these composite materials includes removing water from non-aqueous solvents, removing water vapour from gaseous mixtures, and cleaning industrial reaction vessels and/or pipelines.
Facile Synthesis of Vinyl Sulfones from β-Bromo Alcohols
作者:Jae Wook Lee、Chi-Wan Lee、Jin Hang Jung、Dong Young Oh
DOI:10.1080/00397910008087440
日期:2000.8
Vinyl sulfones are synthesized in good yields by dehydration of beta-hydroxy sulfones derived from beta-bromo alcohols.
Hexamethonium bis(tribromide) (HMBTB) a recyclable and high bromine containing reagent
作者:Bappi Paul、Bishal Bhuyan、Debraj D. Purkayastha、Siddhartha S. Dhar、Bhisma K. Patel
DOI:10.1016/j.tetlet.2015.08.063
日期:2015.10
A recyclable and high bromine containing di-(tribromide) reagent, hexamethonium bis(tribromide) (HMBTB) has been synthesized and utilized for the bromination of various organic substrates. The spent reagent hexamethonium bromide (HMB) can be effectively recycled by regenerating and reusing it without significant loss of activity. The crystalline and stable bis(tribromide) is an effective storehouse of very high percentage of active bromine requiring just half an equivalent of it for complete bromination. Both the Br-3(-) moieties in HMBTB are nearly linear with Br-Br-Br angle of 179.55 degrees. Published by Elsevier Ltd.
Prevost, Annales de Chimie (Cachan, France), 1928, vol. <10>10, p. 357,378,389 Anm.