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34837-55-3 - Phenylselenenyl bromide, 98% - Benzeneselenenyl bromide - A11906 - Alfa Aesar

A11906 Phenylselenenyl bromide, 98%

Codice CAS
34837-55-3
Sinonimi
Benzeneselenenyl bromide

Dimensioni Prezzo ($) Quantità Disponibilità
1g 18,30
5g 56,80
25g 193,00
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Phenylselenenyl bromide, 98%

MDL
MFCD00000047
EINECS
252-238-1

Proprietà chimiche

Formula
C6H5BrSe
Peso formula
235.98
Punto di fusione
56-62°
Punto di ebollizione
107-108°/15mm
Sensibilità
Moisture Sensitive
Solubilità
Soluble in toluene, very faint turbidity.

Applicazioni

Employed in the synthesis of enones by selenenylation of α-cyano ketones with lithium naphthalenide. Phenylselenyl bromide was used in the preparation of exo-2-methyl-7-phenylselenyl-octahydro-8-oxa-2,7b-diaza-dicyclopenta[a,e]pentalene-1,3-dione and endo-2-methyl-7-phenylselanyl-octahydro-8-oxa-2,7b-diaza-dicyclopenta[a,e]pentalene-1,3-dione.

Note

Moisture Sensitive. Store away from air and water/moisture. Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Store away from oxidizing agent.

Letteratura

Ali Dondas H, et al. X= Y-ZH Systems as potential 1, 3-dipoles. Part 52: Fused-ring forming electrophile induced oxime?nitrone? cycloaddition cascades. Tetrahedron Lett.2001,57(32), 7035-7045.

Derek H.R. Barton; George Bashiardes; Jean-Louis Fourrey . Studies on the oxidation of hydrazones with iodine and with phenylselenenyl bromide in the presence of strong organic bases; an improved procedure for the synthesis of vinyl iodides and phenyl-vinyl selenides. Tetrahedron,1988, 44(1), 147-162.

Reagent for the introduction of the phenylseleno group. Compare following entry (phenylselenenyl chloride) and Diphenyl­ diselenide, A13919.

Addition to alkenes gives the kinetic product at low temperature in THF but the thermodynamic product at room temperature in acetonitrile: J. Org. Chem., 42, 2950 (1977):

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H301-H331-H373

Toxic if swallowed. Toxic if inhaled. May cause damage to organs through prolonged or repeated exposure.

Dichiarazioni precauzionali: P260-P301+P310a-P304+P340-P311a-P405-P501a

Do not breathe dust/fume/gas/mist/vapours/spray. IF SWALLOWED: IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Altri riferimenti

Beilstein
2039772
Classe di rischio
6.1
Gruppo di imballaggio
II
Codice tariffe armonizzato
2931.90
TSCA
No

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