SAMARIUM(II) IODIDE Chemische Eigenschaften,Einsatz,Produktion Methoden

R-S?tze Betriebsanweisung:

R11:Leichtentzündlich.
R19:Kann explosionsf?hige Peroxide bilden.
R36/37:Reizt die Augen und die Atmungsorgane.

S-S?tze Betriebsanweisung:

S16:Von Zündquellen fernhalten - Nicht rauchen.
S29:Nicht in die Kanalisation gelangen lassen.
S33:Ma?nahmen gegen elektrostatische Aufladungen treffen.

Beschreibung

Samarium(II) iodide, SmI2, when employed as a solution for organic synthesis, is known as “Kagan’s reagent.” SmI2 is a green solid and its solutions are green as well. It is a strong one-electron reducing agent that is used in organic synthesis. Solid, solvent-free SmI2 forms by high-temperature decomposition of samarium(III) iodide (SmI3).

Chemische Eigenschaften

Deep bleu-green solution

Verwenden

Samarium(II) iodide solution (SmI₂) can be used as a reagent in the synthesis of:

• Benzannulated pyrrolizidines and indolizidines by SmI₂-induced cyclizations of indole derivatives.
• Chiral 4-substituted 2-oxazolidinones and 5,5-disubstituted oxazolidinones through asymmetric Reformatsky type reaction.
• γ-Aminoalkyl substituted γ-butyrolactones via ketyl-alkene coupling reaction.

It can also be used in:

• Reduction of conjugated double and triple bonds into alkenes using SmI₂/H₂O/amine mixtures.
• Conversion of β-hydroxyketones into 1,3-diols by SmI₂/H₂O/Et₃N.
• Selective reduction of 6-membered lactones to the corresponding diols/triols using SmI₂-H₂O reagent system.

SmI₂ is an effective single-electron reducing agent for the promotion of ketone-olefin, ketyl aryl cyclizations, and pinacol coupling reactions under mild conditions. Often both intramolecular and intermolecular couplings proceed in a highly stereoselective fashion. It is also used in the synthesis of new heteroleptic samarium aryloxide/cyclopentadienide complexes.

l?uterung methode

A possible impurity is SmI3 from which it is made. If present, grind the solid to a powder and heat it in a stream of pure H2. The temperature (~ 500-600o) should be below the m (~ 628o) of SmI3, since the molten compounds react very slowly. [Wetzel in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II pp 1149, 1150 1965.]

SAMARIUM(II) IODIDE Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte

SAMARIUM(II) IODIDE Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Firmenname	Telefon	E-Mail	Land	Produktkatalog	Edge Rate
career henan chemical co	+86-0371-86658258 +8613203830695	sales@coreychem.com	China	29815	58
CONIER CHEM AND PHARMA LIMITED	+8618523575427	sales@conier.com	China	49979	58
Hubei Ipure Biology Co., Ltd	+8613367258412	ada@ipurechemical.com	China	10236	58
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418671 +8618949823763	sales@tnjchem.com	China	34563	58
HONG KONG IPURE BIOLOGY CO.,LIMITED	86 18062405514 18062405514	ada@ipurechemical.com	CHINA	3461	58
Hunan russell chemicals technology co ltd	731-88557738 +8613739093081	sales01@russellchem.com	CHINA	291	58
Shaanxi Dideu Medichem Co. Ltd	+86-029-89586680 +86-18192503167	1026@dideu.com	China	9996	58
Alfa Chemistry	--	info@alfa-chemistry.com	United States	2344	58
Aston Chemical	--	sales@astonchem.com	United States	1634	58
Zhuoer Chemical Co., Ltd	02120970332; +8613524231522	sales@zhuoerchem.com	China	2904	58

32248-43-4()Verwandte Suche:

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