scholarly journals Decarboxylation of the Permanganate Oxidation Product of Lyoniresinol Dimethyl Ether

1960 ◽  
Vol 8 (9) ◽  
pp. 844-844 ◽  
Author(s):  
Masaichi Yasue ◽  
Yoshishige Kato
Keyword(s):  
Dimethyl Ether ◽  
Oxidation Product ◽  
Permanganate Oxidation

LYCOPODIUM ALKALOIDS: II SOME REACTIONS OF THE PERMANGANATE OXIDATION PRODUCT OF ANOTININE

1953 ◽  
Vol 31 (6) ◽  
pp. 543-549 ◽  
Author(s):  
David B. MacLean ◽  
H. C. Prime
Keyword(s):  
Nitrogen Atom ◽  
Oxidation Product ◽  
Permanganate Oxidation ◽  
Clemmensen Reduction ◽  
Lycopodium Alkaloids

The permanganate oxidation product of annotinine is shown to be an amide that contains the ether ring of annotinine still intact. The Clemmensen reduction of this compound to the saturated base, C16H23O2N, was re-examined. A number of intermediates were isolated from the system and these were also prepared from the oxidation product by other methods. Analogous reactions of annotinine chlorohydrin were also studied. From these results suggestions are presented regarding the size of the ether ring and its position relative to the nitrogen atom.

THE SYNTHESES AND REACTIONS OF ALKYLATED FURANS

1957 ◽  
Vol 35 (3) ◽  
pp. 236-250 ◽  
Author(s):  
Wm. H. Brown ◽  
George F Wright
Keyword(s):  
Nitric Acid ◽  
Oxidation Product ◽  
Acid Oxidation ◽  
Air Oxidation ◽  
Substitution Product ◽  
Butyl Bromide ◽  
Permanganate Oxidation ◽  
Nitric Acid Oxidation ◽  
Cis Isomer

The reaction of 2-chloromercurifuran with t-butyl bromide does not yield 2-t-butylfuran. Instead 2,5-di-t-butylfuran, 2,2,7,7-tetramethyloctane-3,6-dione, and 2-t-butyl-5-[2,4,4-trimethyl-2-pentyl]furan are produced. Air-oxidation of di-t-butylfuran yields trans-2,2,7,7-tetramethyl-4-octene-3,6-dione (converted to the cis isomer photochemically) which forms a dibromide identical with the dibromo substitution product from tetramethyloctanedione. Cold nitric acid oxidation of di-t-butylfuran or tetramethyloctanedione yields 4-hydroxy-5-isonitroso-2,2,7,7-tetramethyloctane-3,6-dione, but hot nitric acid oxidation of the tetramethyloctanedione yields the expected 2-trimethylacetyl-5-t-butylisoxazole. The corresponding oxidation product of t-butyltrimethylpentylfuran has not been identified, although it yields 2,2,4,4-tetramethylpentanoic acid, indicative of the isoöctyl substituent, upon hydrolysis. The same acid is obtained by permanganate oxidation of Friedel–Crafts-synthesized 2,5-di-[2,4,4-trimethyl-2-pentyl]furan, a compound which yields trans-2,2,4,4,9,9,11,11-octamethyl-6-dodecene-5,8-dione.

The origin of oxonitine: a potassium permanganate oxidation product of aconitine

1982 ◽  
Vol 104 (17) ◽  
pp. 4676-4677 ◽  
Author(s):  
S. William Pelletier ◽  
Jan A. Glinski ◽  
Naresh V. Mody
Keyword(s):  
Potassium Permanganate ◽  
Oxidation Product ◽  
Permanganate Oxidation

Efficient Production of Light Olefin Based on Methanol Dehydration: Simulation and Design Improvement

2020 ◽  
Vol 23 ◽  
Author(s):  
S. Majid Abdoli ◽  
Mahsa Kianinia
Keyword(s):  
Dimethyl Ether ◽  
Flow Reactor ◽  
New Technology ◽  
Plug Flow ◽  
Light Olefins ◽  
Efficient Production ◽  
Actual Process ◽  
Light Olefin ◽  
Aspen Hysys ◽  
Improved Design

Background: Ethylene, propylene, and butylene as light olefins are the most important intermediates in the petrochemical industry worldwide. Methanol to olefins (MTO) process is a new technology based on catalytic cracking to produce ethylene and propylene from methanol. Aims and Objective: This study aims to simulate the process of producing ethylene from methanol by using Aspen HYSYS software from the initial design to the improved design. Methods: Ethylene is produced in a two-step reaction. In an equilibrium reactor, the methanol is converted to dimethyl ether by an equilibrium reaction. The conversion of the produced dimethyl ether to ethylene is done in a conversion reactor. Changes have been made to improve the conditions and get closer to the actual process design done in the industry. The plug flow reactor has been replaced by the equilibrium reactor, and the distillation column was employed to separate the dimethyl ether produced from the reactor. Result and Conclusion: The effect of the various parameters on the ethylene production was investigated. Eventually, ethylene is

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