ChemInform Abstract: REACTIONS OF TRIADS SULFUR-POTASSIUM HYDROXIDE-DIMETHYL SULFOXIDE, SELENIUM-POTASSIUM HYDROXIDE-DIMETHYL SULFOXIDE, AND TELLURIUM-POTASSIUM HYDROXIDE-HEXAMETHYLPHOSPHORIC TRIAMIDE WITH ACETYLENES

1982 ◽  
Vol 13 (26) ◽  
Author(s):  
B. A. TROFIMOV ◽  
S. V. AMOSOVA ◽  
N. K. GUSAROVA ◽  
G. K. MUSORIN
Keyword(s):  
Dimethyl Sulfoxide ◽  
Potassium Hydroxide ◽  
Hexamethylphosphoric Triamide

scholarly journals Aliphatic diazo compounds. IX. The base-induced dimerization of α-diazo ketones

1969 ◽  
Vol 47 (21) ◽  
pp. 3997-4004 ◽  
Author(s):  
Peter Yates ◽  
R. G. F. Giles ◽  
D. G. Farnum
Keyword(s):  
Benzoic Acid ◽  
Dimethyl Sulfoxide ◽  
Potassium Hydroxide ◽  
Ammonium Acetate ◽  
Butyl Alcohol ◽  
Diazo Compounds ◽  
Prolonged Treatment ◽  
Independent Synthesis

Treatment of 2-diazoacetophenone (1) with potassium t-butoxide in t-butyl alcohol gives a colorless dimer, which is shown to be 5-benzoyl-2-phenacyltetrazole (4) by its independent synthesis by phenacylation of 5-benzoyltetrazole. The latter reaction also gives 5-benzoyl-1-phenacyltetrazole (3), which is distinguished from 4 by its reduction to di(2-hydroxy-2-phenylethyl)amine and by its cyclization on treatment with ammonium acetate. The assignment of the structure of the colorless dimer of 1 permits the postulation of related pathways for its formation and that of the red-brown dimer obtained on treatment of 1 with potassium hydroxide in dimethyl sulfoxide. 2-Phenacyltetrazole (22) and benzoic acid are formed in addition to 4 on treatment of 1 with potassium t-butoxide in t-butyl alcohol; these are considered to arise via cleavage of 4, since prolonged treatment of 4 and 3 with potassium t-butoxide in t-butyl alcohol gives 22 and 1-phenacyltetrazole (24), respectively. Compounds 22 and 24 have been prepared independently by phenacylation of tetrazole.

Hammett-Streitwieser Reaction Constants for the Electroreduction of Diaryl Ketones in Aprotic Media

1996 ◽  
Vol 49 (8) ◽  
pp. 901 ◽  
Author(s):  
E Wagnerczauderna ◽  
MK Kalinowski
Keyword(s):  
Cyclic Voltammetry ◽  
Dimethyl Sulfoxide ◽  
Propylene Carbonate ◽  
Radical Anion ◽  
Electrode Reaction ◽  
Hexamethylphosphoric Triamide ◽  
Ketyl Radical ◽  
Donor Numbers ◽  
Reaction Constants ◽  
Solvent Acidity

Cyclic voltammetry has been used to measure formal potentials of seven aromatic ketone/ketyl radical anion systems in benzonitrile, acetonitrile , propylene carbonate, acetone, N,N- dimethylformamide, N-methylpyrrolidin-2-one, dimethyl sulfoxide and hexamethylphosphoric triamide. The values measured in each solvent obey the Hammett- Streitwieser equation; the reaction constants were found to depend on the solvent acidity and basicity expressed by acceptor and donor numbers, respectively. The results are discussed in terms of the solvation of the products and reactants of the electrode reaction.

Synthesis of Simple Unsymmetrical Ethers from Alcohols and Alkyl Halides or Sulfates: The Potassium Hydroxide/Dimethyl Sulfoxide System

Synthesis ◽  
1979 ◽  
Vol 1979 (06) ◽  
pp. 428-429 ◽  
Author(s):  
David R. Benedict ◽  
Thomas A. Bianchi ◽  
Laurence A. Cate
Keyword(s):  
Dimethyl Sulfoxide ◽  
Potassium Hydroxide ◽  
Alkyl Halides

Potassium hydroxide-Dimethyl sulfoxide

2006 ◽  
Author(s):  
Tse-Lok Ho ◽  
Mary Fieser ◽  
Louis Fieser ◽  
Rick Danheiser ◽  
William Roush
Keyword(s):  
Dimethyl Sulfoxide ◽  
Potassium Hydroxide

ChemInform Abstract: Dimethyl Sulfoxide/Potassium Hydroxide: A Superbase for the Transition Metal-Free Preparation of Cross-Coupling Products.

ChemInform ◽  
2011 ◽  
Vol 42 (14) ◽  
pp. no-no
Author(s):  
Yu Yuan ◽  
Isabelle Thome ◽  
Seok Hwan Kim ◽  
Duanteng Chen ◽  
Astrid Beyer ◽  
...  
Keyword(s):  
Transition Metal ◽  
Dimethyl Sulfoxide ◽  
Potassium Hydroxide ◽  
Cross Coupling ◽  
Metal Free

scholarly journals Corrigendum: Dimethyl Sulfoxide/Potassium Hydroxide: A Superbase for the Transition Metal-Free Preparation of Cross-Coupling Products

2010 ◽  
Vol 352 (18) ◽  
pp. 3112-3112
Author(s):  
Yu Yuan ◽  
Isabelle Thomé ◽  
Seok Hwan Kim ◽  
Duanteng Chen ◽  
Astrid Beyer ◽  
...  
Keyword(s):  
Transition Metal ◽  
Dimethyl Sulfoxide ◽  
Potassium Hydroxide ◽  
Cross Coupling ◽  
Metal Free
Sign in / Sign up

Export Citation Format

Share Document