Iodine(I) Reagents in Hydrochloric Acid-Catalyzed Oxidative Iodination of Aromatic Compounds by Hydrogen Peroxide and Iodine

2013 ◽  
Vol 355 (7) ◽  
pp. 1243-1248 ◽  
Author(s):  
Leon Bedrač ◽  
Jernej Iskra
Keyword(s):  
Hydrogen Peroxide ◽  
Hydrochloric Acid ◽  
Aromatic Compounds ◽  
Acid Catalyzed ◽  
Oxidative Iodination

The Iodination of Aromatic Compounds. III. Halogenation of Aromatic Ethers in the Presence of Hydrogen Peroxide

1949 ◽  
Vol 2 (4) ◽  
pp. 595
Author(s):  
L Jurd
Keyword(s):  
Hydrogen Peroxide ◽  
Hydrochloric Acid ◽  
Sulphuric Acid ◽  
Aromatic Compounds ◽  
Potassium Bromide ◽  
Mineral Acid ◽  
Alcoholic Solution ◽  
Strong Mineral Acid ◽  
High Yields

Aromatic ethers are rapidly iodinated when treated in alcoholic solution with iodine and hydrogen peroxide in the presence of a strong mineral acid. High yields of the mono-iodo-derivatives are obtained with anisole and the 2-naphthyl ethers whilst both mono- and diiodination occur readily with the dimethoxybenzenes. In the absence of a mineral acid the reaction is very slow and only poor yield of the iodo-ethers result. A convenient process is described for the preparation of p-chloro- and p-bromo- anisole, and other chloro- and bromo-ethers, the ether being treated with hydrochloric acid and with potassium bromide and sulphuric acid respectively in the presence of hydrogen peroxide.

Kinetics of cyclization of S-ethoxycarbonylmethylisothiouronium chloride to 2-imino-4-thiazolidone

1979 ◽  
Vol 44 (3) ◽  
pp. 912-917 ◽  
Author(s):  
Vladimír Macháček ◽  
Said A. El-bahai ◽  
Vojeslav Štěrba
Keyword(s):  
Hydrochloric Acid ◽  
Dilute Hydrochloric Acid ◽  
Base Catalysis ◽  
General Base ◽  
Rate Limiting Step ◽  
Limiting Step ◽  
Kinetics Of Formation ◽  
Acid Catalyzed ◽  
Rate Limiting ◽  
Kinetics Of

Kinetics of formation of 2-imino-4-thiazolidone from S-ethoxycarbonylmethylisothiouronium chloride has been studied in aqueous buffers and dilute hydrochloric acid. The reaction is subject to general base catalysis, the β value being 0.65. Its rate limiting step consists in acid-catalyzed splitting off of ethoxide ion from dipolar tetrahedral intermediate. At pH < 2 formation of this intermediate becomes rate-limiting; rate constant of its formation is 2 . 104 s-1.

Formation of Samin Diastereomers by Acid-Catalyzed Transformation of Sesamolin with Hydrogen Peroxide

2020 ◽  
Vol 68 (23) ◽  
pp. 6430-6438
Author(s):  
Hsin-Ya Tsai ◽  
Wei-Ju Lee ◽  
I-Hsuan Chu ◽  
Wei-Ching Hung ◽  
Nan-Wei Su
Keyword(s):  
Hydrogen Peroxide ◽  
Acid Catalyzed

Lewis Acid Catalyzed Highly Selective Halogenation of Aromatic Compounds

Synlett ◽  
2005 ◽  
pp. 2837-2842 ◽  
Author(s):  
Hisashi Yamamoto ◽  
Yanhua Zhang ◽  
Kazutaka Shibatomi
Keyword(s):  
Lewis Acid ◽  
Aromatic Compounds ◽  
Acid Catalyzed

Iodination of Aromatic Compounds Using Potassium Iodide and Hydrogen Peroxide

2008 ◽  
Vol 38 (22) ◽  
pp. 3894-3902 ◽  
Author(s):  
K. Suresh Kumar Reddy ◽  
N. Narender ◽  
C. N. Rohitha ◽  
S. J. Kulkarni
Keyword(s):  
Hydrogen Peroxide ◽  
Potassium Iodide ◽  
Aromatic Compounds
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