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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-H400-H410

Toxic if swallowed. Toxic if inhaled. May cause damage to organs through prolonged or repeated exposure. Very toxic to aquatic life. Very toxic to aquatic life with long lasting effects.

Dichiarazioni precauzionali: P260-P261-P273-P301+P310-P304+P340-P311-P321-P405-P403+P233-P501a

Do not breathe dust/fume/gas/mist/vapours/spray. Avoid breathing dust/fume/gas/mist/vapours/spray. Avoid release to the environment. IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Call a POISON CENTER or doctor/physician. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. 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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