ChemicalBook CAS DataBase List 2-Methylbutane

2-Methylbutane synthesis

12synthesis methods

Product Name:2-Methylbutane
CAS Number:78-78-4
Molecular formula:C5H12
Molecular Weight:72.15

2-Methylbutane was synthesized by liquid-phase catalytic isomerization at 95°C using pentane as raw material.

2049-95-8 Synthesis

2049-95-8
243 suppliers
$14.00/25g

78-78-4
282 suppliers
$21.00/25ML

71-43-2
721 suppliers
$11.20/25ML

Yield:71-43-2 97 %Chromat. ，78-78-4 96 %Chromat.

Reaction Conditions:

with hydrogen;C₂₀H₂₀B₁₁F₁₀N₂⁽¹⁺⁾*C₂₄BF₂₀^(1-) at 25; under 15001.5 Torr;Autoclave;

Steps:

General procedure for borenium-catalysed hydrodealkylation of alkylarenes

Inside a nitrogen-filled glovebox, 1a and alkylarene were dissolved inC₆H₅Br (0.5 ml) and transferred into the well of an autoclave. After the head of the autoclave was assembled, the autoclave was taken out ofthe glovebox and connected to a dihydrogen gas cylinder. The connectionline was flushed with dihydrogen three times. Then the autoclave was pressurized to 20 bar of dihydrogen and allowed to stand at room temperature for 24 h. The autoclave was then cooled to -40 °C in a cold ethanol bath for 15 min, followed by releasing the dihydrogen pressure. After removing the head of autoclave, octane and diphenylmethane were added into the well of an autoclave as internal standards. The resulting reaction mixture was then subjected to GC-MS analysis.The identities of products were confirmed by comparison of the mass spectra and retention times of the products with those of authentic compounds.

References:

Xu, Yuliang;Yang, Yizhou;Liu, Yizhen;Li, Zhen Hua;Wang, Huadong [Nature Catalysis,2023,vol. 6,# 1,p. 16 - 22]

78-79-5 Synthesis