62108-41-2

Basic information

• Product Name: Pentane, 2-methoxy-2,4,4-trimethyl-
• Synonyms: Pentane, 2-methoxy-2,4,4-trimethyl-;2,2,4-Trimethyl-4-methoxypentane;2-Methoxy-2,4,4-trimethylpentane;Methyl tert-octyl ether;Methyl(1,1,3,3-tetramethylbutyl) ether
• CAS NO: 62108-41-2
• Molecular Formula: C₉H₂₀O
• Molecular Weight: 144.25
• Mol File: 62108-41-2.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 133.9°C at 760 mmHg
• Flash Point: 23.6°C
• Appearance: /
• Density: 0.785g/cm³
• Vapor Pressure: 10.2mmHg at 25°C
• Refractive Index: 1.409
• CAS DataBase Reference: Pentane, 2-methoxy-2,4,4-trimethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Pentane, 2-methoxy-2,4,4-trimethyl-(62108-41-2)
• EPA Substance Registry System: Pentane, 2-methoxy-2,4,4-trimethyl-(62108-41-2)

Safety Data

• Hazardous Substances Data: 62108-41-2(Hazardous Substances Data)

Usage

InChI:InChI=1/C9H20O/c1-8(2,3)7-9(4,5)10-6/h7H2,1-6H3

Upstream product

• 67-56-1 methanol 
• 107-40-4 2,4,4-trimethylpent-2-ene 
• 6111-88-2 2-chloro-2,4,4-trimethylpentane 
• 55204-43-8 2,2'-Azobis(2,4,4-trimethylpentane) 
• 201230-82-2 carbon monoxide 
• 107-39-1 2,4,4-trimethyl-1-pentene 

Relevant articles and documents

Isomerizing Methoxycarbonylation of Alkenes to Esters Using a Bis(phosphorinone)xylene Palladium Catalyst

The synthesis and characterization of bulky diphosphine 1,2-bis(4-phosphorinone)xylene, BPX, and its palladium complexes [(BPX)PdCl2] and [(BPX)Pd(O2CCF3)2] are described. BPX was evaluated as a ligand in Pd-catalyzed isomerizing methoxycarbonylation. A broad range of alkenes, including terminal, internal, branched, and functionalized alkenes, can be converted to esters with activities and selectivities matching or surpassing the performance of the state-of-the-art palladium bis(di(tert-butyl)phosphino-o-xylene (Pd-DTBPX) catalyst. A molecular structure of the precatalyst [(BPX)Pd(O2CCF3)2] was obtained showing a square planar geometry and a bite angle of 100.11(3)°. Rhodium carbonyl complexes [(BPX)Rh(CO)Cl] and [(DTBPX)Rh(CO)Cl] were synthesized to compare the relative electronic parameters, revealing a ν(C≡O) of 1956.8 and 1948.3 cm-1, respectively, suggesting a reduced ability of BPX to donate electron density to the metal relative to DTBPX. Competitive protonation experiments between BPX and DTBPX in the presence of CH3SO3H exclusively produce [DTBPX(H)2]2+, providing additional evidence that BPX is a much weaker base than DTBPX. This could be due to either the effect of the electron-withdrawing ketone group in the phosphorinone ring or the compression of the C-P-C bond angle induced by the ring structure. The 31P NMR (CDCl3) chemical shift of BPX is 5.6 ppm, upfield of DTBPX at 27.6 ppm. This anomalous result is attributed to a strong gamma substituent effect of C=O in the BPX ligand. The improved activity of Pd-BPX, relative to Pd-DTBPX, could be attributed to a more electrophilic PdII center, which could accelerate the rate-determining methanolysis step.

Reaction of Azoalkanes with Isolable Cation Radical Salts

Three tertiary azoalkanes related in the sense acyclic, cyclic, and bicyclic are shown to evolve nitrogen upon oxidation with stable cation radical salts.Thus azo-tert-octane (ATO), 3,3,6,6-tetramethyl-1,2-diazacyclohexene (TMDAC), and 1,4-dimethyl-2,3-diazabicyclooct-2-ene (Me2DBO) react rapidly with thianthrenium perchlorate (Th(.1+)ClO4(1-)), tris(p-bromophenyl)aminium hexachloroantimonate (TBPA(.1+)SbCl6(1-)), and TBPA(.1+)SbF6(1-).The ether and olefin products, which are formed in high yield in CH2Cl2/MeOH solvent, are not those expected from the usual free-radical decomposition of azoalkanes but instead implicate carbocations.Althrough the reaction stoichiometry clearly requires 2 equiv of cation radical salt to one of azoalkane, the mechanism is not yet clearly defined.A complication in these studies is found in the ability of certain cation radical salts to oxidize more azoalkane than expected based on the 2:1 stoichiometry.