ChemInform Abstract: Functionalization of Saturated Hydrocarbons by Aprotic Superacids. Part 4. Ionic Bromination of Ethane, Other Alkanes, and Cycloalkanes with Molecular Bromine in the Presence of Polyhalomethane-AlBr3 Systems Under Mild Conditions.

Partial oxidation of cyclopentane, cyclohexane, cycloheptane and propane to oxygenated products has been investigated using vanadyl acetylacetonate catalyst in presence of oxidant K2S2O8 in CF3COOH (TFA) solvent. It has been observed that the primary products were alcohols and carbonyl compounds. However, in the reaction of cycloheptane and propane, carbonyl was not formed. Alcohols subsequently reacted with TFAand produced esters. In case of propane, two esters were observed where iso-propyl trifluoroacetate was the dominant product and n-propyl trifluoroacetate was the minor product. In this case, about 89 mol% conversion was achieved. The conversion of cycloalkanes is found lower than that of propane. For the cyclohexane functionalization, the optimum condition found 7.5 mmol of K2S2O8, 5 mL of CF3COOH, 0.1 mmol of catalyst, 80Â°C reaction temperature and 1 mmol of cyclohexane.Â Key words: Partial oxidation, Homogeneous catalysis, Hydrocarbon functionalization, Potassium persulfate and Trifluoroacetic acidDOI = 10.3329/bjsir.v43i3.1144Bangladesh J. Sci. Ind. Res. 43(3), 291-300, 2008

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Functionalization of saturated hydrocarbons by aprotic superacids 5. Regioselective carbonylation of propane in an organic solvent initiated by aprotic organic superacids CX4�nAlBr 3 (X = Br, Cl;n = 1 or 2)

Russian Chemical Bulletin ◽

10.1007/bf01431610 ◽

1996 ◽

Vol 45 (5) ◽

pp. 1154-1156 ◽

Cited By ~ 4

Author(s):

I. S. Akhrem ◽

A. V. Orlinkov ◽

L. V. Afanas'eva ◽

M. E. Vol'pin

Keyword(s):

Organic Solvent ◽

Saturated Hydrocarbons ◽

Aprotic Superacids

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ChemInform Abstract: Functionalization of Saturated Hydrocarbons by Aprotic Superacids. Part 6. Effective Regioselective Monoformylation of Adamantane in the Presence of Hydride Ion Donor.

ChemInform ◽

10.1002/chin.199738094 ◽

2010 ◽

Vol 28 (38) ◽

pp. no-no

Author(s):

I. S. AKHREM ◽

I. M. CHURILOVA ◽

S. V. VITT ◽

A. V. ORLINKOV ◽

M. E. VOL'PIN

Keyword(s):

Saturated Hydrocarbons ◽

Hydride Ion ◽

Aprotic Superacids

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Facile Polyolefin Plastics Hydrogenolysis Catalyzed by a Surface Electrophilic d0 Hydride

10.26434/chemrxiv-2021-7bx90 ◽

2021 ◽

Author(s):

Alexander H. Mason ◽

Alessandro Motta ◽

Anusheela Das ◽

Qing Ma ◽

Michael J. Bedzyk ◽

...

Keyword(s):

Molecular Mass ◽

Isotactic Polypropylene ◽

Light Hydrocarbons ◽

Major Fraction ◽

Saturated Hydrocarbons ◽

Acidic Support ◽

Mild Conditions ◽

Broad Array ◽

Earth Abundant ◽

Single Use

Polyolefins comprise a major fraction of single-use plastics and yet their catalytic deconstruction/recycling has proven challenging due to their inert hydrocarbon connectivities. Here an electrophilic earth-abundant single-site organozirconium catalyst chemisorbed on a highly Brønsted acidic support and characterized by a broad array of experimental and theoretical techniques, is shown to mediate the rapid hydrogenolytic cleavage of molecular and macromolecular saturated hydrocarbons under mild conditions. For n-hexadecane, hydrogenolysis to light hydrocarbons proceeds with an activity of 690 mol n-hexadecane · mol Zr-1 · h-1 at 150°C/2.5 atm H2 pressure. Under similar solventless conditions, polyethylene, polyethylene-co- 1-octene, isotactic polypropylene, and a post-consumer sandwich bag are rapidly hydrogenolyzed to low molecular mass hydrocarbons via a turnover-limiting C-C scission pathway involving ßalkyl transfer rather than more common σ-bond metathesis.

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Single-Step Dual Functionalization: One-Pot Bromination-Cross-Dehydrogenative Esterification of Hydroxy Benzaldehydes with CCl3Br – A Comparison with Selectfluor

Synlett ◽

10.1055/s-0037-1610717 ◽

2019 ◽

Vol 30 (14) ◽

pp. 1713-1718 ◽

Cited By ~ 2

Author(s):

Ranadeep Talukdar

Keyword(s):

Phenolic Compounds ◽

Aldehyde Group ◽

Single Step ◽

Molecular Bromine ◽

One Pot ◽

Blue Led ◽

Aryl Ring ◽

Mild Conditions ◽

Reaction Proceeds ◽

Phenolic Esters

Bromination of phenolic compounds without directly using molecular bromine possesses much importance. In this article an IrIII/CCl3Br-assisted single-step double functionalization of hydroxy benzaldehydes is reported. It involves simultaneous esterification of the aldehyde group and bromination of the aryl ring of phenolic aldehydes in one-pot. The reaction proceeds under mild conditions in the presence of 445 nm blue LED light to obtain highly functionalized bromo hydroxy benzoates in moderate to good yields. In comparison, Selectfluor as an oxidant gives only non-bromo phenolic esters.

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