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Pummerer-like reaction of selenium(IV)-dichlorides. Synthesis of α-chloro-α-phenylselenenylketones and α,α-dichloro-α-phenylselenenylketones

✍ Scribed by Lars Engman; Joachim Persson; Ulf Tilstam

Publisher
Elsevier Science
Year
1989
Tongue
French
Weight
257 KB
Volume
30
Category
Article
ISSN
0040-4039

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✦ Synopsis

Selenium(W)-dichlorides

1, readily available by treatment of methyl ketones with phenylselenium trichloride or selenium tetrachloride, were treated in methylene chloride with pyridine to give a-chloroselenides 2 in a Pummerer-like reaction. Sulfuryl chloride chlorination of these materials and repeated pyridine treatment similarly afforded a,a-dichloroselenides 4.

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