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Reactions of a quintuply bonded chromium dimer with alkynes

Jingmei Shen1, Glenn P A Yap, Jan-Philipp Werner

  • 1Department of Chemistry and Biochemistry, Center for Catalytic Science and Technology, University of Delaware, Newark, DE 19711, USA.

Chemical Communications (Cambridge, England)
|October 12, 2011
PubMed

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Halogenation is another class of electrophilic addition reactions where a halogen molecule gets added across a π bond. In alkynes, the presence of two π bonds allows for the addition of two equivalents of halogens (bromine or chlorine). The addition of the first halogen molecule forms a trans-dihaloalkene as the major product and the cis isomer as the minor product. Subsequent addition of the second equivalent yields the tetrahalide.
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Introduction
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