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Samarium(II) iodide is a reagent for carbon-carbon bond formation, for example in a Barbier reaction (similar to the Grignard reaction) between a ketone and an alkyl iodide to form a tertiary alcohol: [9] R 1 I + R 2 COR 3 → R 1 R 2 C(OH)R 3 Barbier reaction using SmI 2. Typical reaction conditions use SmI 2 in THF in the presence of ...
Dansyl chloride or 5-(dimethylamino)naphthalene-1-sulfonyl chloride is a reagent that reacts with primary amino groups in both aliphatic and aromatic amines to produce stable blue- or blue-green–fluorescent sulfonamide adducts. It can also be made to react with secondary amines.
Although pure SmI 2 is air sensitive, solutions of the reagent may be manipulated in air without special precautions. SmI 2 reacts very slowly with water and even more slowly with alcohols. Alcohols are commonly used as co-solvents or proton sources in SmI 2 reductions, as immediate quenching of negatively charged intermediates with a proton ...
Midland Scientific is a woman-owned, [1] full-line laboratory products distributor with offices in Nebraska, Iowa, Colorado, South Dakota, and Texas. [2] [3] Midland Scientific is a provider of laboratory supplies including chemicals, reagents, solutions, glassware, plasticware, biological media, instrumentation, measurement equipment, general laboratory supplies and laboratory consumables.
In chemistry, a reagent (/ r i ˈ eɪ dʒ ən t / ree-AY-jənt) or analytical reagent is a substance or compound added to a system to cause a chemical reaction, or test if one occurs. [1] The terms reactant and reagent are often used interchangeably, but reactant specifies a substance consumed in the course of a chemical reaction. [ 1 ]
The Trinder solution/reagent is a pre-mixed solution of 10% ferric chloride. [1] It can be prepared by combining 40 g of mercuric chloride and 40 g of ferric nitrate in 850 ml of type II deionized water , and then adding 10 ml of concentrated hydrochloric acid to the solution and diluting to a volume of 1 litre with more type II deionized water.
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The reagent used can be any substance that gives S 2− ions in such solutions; most commonly used are hydrogen sulfide (at 0.2-0.3 M), thioacetamide (at 0.3-0.6 M), addition of hydrogen sulfide can often prove to be a lumbersome process and therefore sodium sulfide can also serve the purpose. The test with the sulfide ion must be conducted in ...
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