2,2,3,3-tetramethylhexane synthesis
- Product Name:2,2,3,3-tetramethylhexane
- CAS Number:13475-81-5
- Molecular formula:C10H22
- Molecular Weight:142.28
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Yield: 3.44% ， 0.17% ， 6.34% ， 4.51% ， 15.7% ， 4.01% ， 6.41% ， 0.4% ， 1.2% ， 3.52% ， 1.89% ， 1.45% ， 9.67% ， 1.45% ， 1.72% ， 9.66% ， 2.18% ， 5.82%
Reaction Conditions:
with water at 84;Product distribution / selectivity;Photolysis;
Steps:
1 EXAMPLE 1
Example 1 Photochemical Studies [0027] This example demonstrates the process of the present invention in which the energy source used to generate hydrated electrons is ultra violet radiation. [0028] The use of ultra violet radiation in the process of the present invention is described in detail in U.S. Provisional Application Serial No. 60/366,068 filed Mar. 19, 2002, which is incorporated herein in its entirety by this reference. [0029] Continuous-flow photolysis studies were conducted in a 5.7-liter, 4-inch-diameter, 28-inch-long cylindrical stainless steel reactor. The apparatus was designed to accommodate a 32-inch long low-pressure mercury vapor lamp. The reactor was fitted with a 100-Watt Sunlight Systems UV lamp with GE-214 quartz envelope to provide 85% transmittance of 185-nm photon emission. [0030] For the initial test, the reactor was charged with approximately 24 psig ultra-pure methane (99.7%) and heated to 84° C. Upon reaching the target temperature, the ultraviolet light source was energized and methane control valve opened to achieve a methane flow rate of 36 mls/min. Samples of process gas were collected through a septum in the reactor exhaust line and analyzed for hydrogen and light hydrocarbon content (H2, ethane, ethylene, acetylene, CO2 and CO) with a dual-channel MicroGC gas chromatography (GC) using Molecular Sieve 5A PLOT and PoraPLOT U columns. Higher molecular weight products were characterized by a chromatograph/mass spectrometer (GC/MS) with a Restek Rtx-1 column. [0031] In the second study, the reactor was charged with approximately 250 mls deoxygenated deionized water and flushed with methane. The system was heated to 84° C. and additional methane added to a system pressure of 24 psig. Ultra-pure methane was processed through the photoreactor at a flow rate of 34 ml/min. The results from the photochemical studies are summarized in the following table
References:
Sherwood, Steven P. US2003/233019, 2003, A1 Location in patent:Page column 3-4
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