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

A11906 Phenylselenenyl bromide, 98%

Numéro CAS
34837-55-3
Synonymes
Benzeneselenenyl bromide

Dimensions Prix ($) Quantité Disponibilité
1g 17,36
5g 57,37
25g 196,73
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Phenylselenenyl bromide, 98%

MDL
MFCD00000047
EINECS
252-238-1

Propriétés chimiques

Formule
C6H5BrSe
Poids formulaire
235.98
Point de fusion
56-62°
Point d'ébullition
107-108°/15mm
Sensibilité
Moisture Sensitive
Solubilité
Soluble in toluene, very faint turbidity.

Applications

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.

Notes

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.

Références bibliographiques

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):

Mentions de danger et de prudence du SGH

Mentions de danger (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.

Mentions de prudence: 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.

Autres références

Beilstein
2039772
Classe de danger
6.1
Groupe d'emballage
II
Code tarifaire harmonisé
2931.90
TSCA
No

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Analytique et matériel de laboratoire