Low-temperature Cleavage of Ethers

Long, L. H.; Freeguard, G. F.

doi:10.1038/207403a0

Cited by 24 publications

(10 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…But there was also a notable decrease of the broad, weakly structured bands of CO stretching vibrations between 1300 and 1000 cm −1 17. In the course of the hydrogenation apparently some oxygen‐containing functional groups in the coal, mainly phenolic ether links,4, 15a were removed by stoichiometric reactions with the borane catalyst, which is thus consumed and converted into borates 18. Since during geochemical coalification, the number of oxygen‐containing functional groups in coals decreases, high‐rank bituminous coals have the lowest oxygen content 4.…”

Section: Conditions and Results For The Hydrogenation/hydrogenolysis mentioning

confidence: 99%

The First Liquefaction of High‐Rank Bituminous Coals by Preceding Hydrogenation with Homogeneous Borane or Iodine Catalysts

et al. 2006

View full text Add to dashboard Cite

show abstract

Section: Conditions and Results For The Hydrogenation/hydrogenolysis mentioning

confidence: 99%

The First Liquefaction of High‐Rank Bituminous Coals by Preceding Hydrogenation with Homogeneous Borane or Iodine Catalysts

et al. 2006

View full text Add to dashboard Cite

show abstract

“…So far, in ion chromatography, some non-conventional types of ion exchangers, such as superficial [112][113][114], supported [115,116] and pellicular resins [II7,118], with capacity values from 10 to 1000 times lower than those of conventional resins have been used [119]. However, the preparation procedures of these ion-exchange materials is much more complex than those of conventional resins and incomparably more complex than the preparation of SISIE.…”

Section: Aminecarboxylate Interaction Of Amino Acid Moleculesmentioning

confidence: 99%

Surface Impregnated Sulfonate Ion Exchangers: Preparation, Properties and Application

Muraviev

1998

Solvent Extraction and Ion Exchange

View full text Add to dashboard Cite

This paper reviews the results obtained by studying Surface Impregnated Sulfonate Ion Exchangers (SISIE) obtained by modification of macroporous or gel polysterene-divinylbenzene polymers with toluene solutions of dinonylnaphthalene sulfonic acids. Capacities of SISIE of the first type are directly proportional to the concentration of the modifying solution and to the specific surface area of the matrix. Capacities of gel SISIE are much less than those of macroporous samples and depend on the crosslinking of the matrix.Stabilization of SISIE capacity and improvement of their kinetic properties can be achieved using "wet drying " technique. Successive impregnation of the same SISIE sample may be used to increase the capacity of the resin. The ionexchange properties of SISIE are mainly determined by their micellar structure which also defines the areas of possible applications of these ion-exchange materials such as, e.g. ion chromatography and some others Several models have been successfully applied to describe the features of ion exchange processes on SISIE. Application of SISIE as convenient model systems to study aminecarboxylate interaction of amino acid molecules is illustrated by suspension effects measured in SISIE-zwitterlyte and SISIE-HCI suspensions and by the results obtained by the laser-acoustic study of these systems. ') Present address:

show abstract

“…Specifically, we wished to couple the THP-protected bromide 10 (or iodide 11) to an eight carbon bromide through Grignard chemistry, then connect this to another molecule of bromide 10 (or iodide 11) to give the 16 carbon, partially deuterated chain. Furthermore, we hoped to adapt a new protocol for opening THF 17,18 and apply it to the perdeuterated manifold, thus circumventing expensive TMSX reagents. The alternative procedure uses sodium borohydride and iodine in THF over 2 h to ring open THF (Scheme 3).…”

Section: Resultsmentioning

confidence: 99%

The preparation of three new partially deuterated hexadecanethiols for applications in surface chemistry

Sheepwash

Rowntree

Schwan

2008

Labelled Comp Radiopharmac

View full text Add to dashboard Cite

The synthesis of three partially deuterated hexadecanethiols has been achieved. Thiols CH 3 (CH 2 ) 7 (CD 2 ) 8 SH, CD 3 (CD 2 ) 7 (CH 2 ) 8 SH and CD 3 (CH 2 ) 15 SH were targeted, as these compounds, after formation of self-assembled monolayers on Au(1 1 1) or Au nanoparticles, can provide mechanistic information pertaining to reactive atom migrations within the assembly. The syntheses of each of these compounds called upon Grignard coupling chemistry, which was activated by Li 2 CuCl 4 . Applicable deuterium containing fragments were either commercially obtained or constructed from by way of an inexpensive and efficient ring opening, protection and dimerization of THF-d 8 . Sulfur incorporation was by thiolacetate substitution or addition reactions. The protocols presented possess general applicability in a number of syntheses requiring block-deuterated fattyalkyl sections.

show abstract

Low-temperature Cleavage of Ethers

Cited by 24 publications

References 0 publications

The First Liquefaction of High‐Rank Bituminous Coals by Preceding Hydrogenation with Homogeneous Borane or Iodine Catalysts

The First Liquefaction of High‐Rank Bituminous Coals by Preceding Hydrogenation with Homogeneous Borane or Iodine Catalysts

Surface Impregnated Sulfonate Ion Exchangers: Preparation, Properties and Application

The preparation of three new partially deuterated hexadecanethiols for applications in surface chemistry

Contact Info

Product

Resources

About