1,2-Dibromoethylene
1,2-Dibromoethylene, nke a dị ka 1,2-dibromoethene na acetylene dibromide, bụ ihe na-adịghị njikere dihalogenated na otu bromine na nke ọ gbala n'ime carbon carbon abụọ. Enwere isomers nke iwu a, cis na trans . ihe isomers bụ mmiri mmiri na- ike agba.
Synthesis
[dezie | dezie ebe o si]1,2-Dibromoethylene nwere ike ike site na halogenation nke acetylene (C 2 H 2 ) na bromine (Br 2). [1] Iji nguzobe nke tetrahalogenated ụdị, a na-eji acetylene eme ihe akụkụ, yana Br 2 dị ka ihe na-ebe reagent. .
N'aka nke ọzọ, ndị ike nwere halogenation nke ụdị a site n'iji ihe abụọ nhata N -bromosuccinimide na lithium bromide (LiBr). N -Bromosuccinimide na-enye Br + dị ka electrophile, nke na-esote Br − sitere na LiBr [1]
Ntụaka
[dezie | dezie ebe o si]- ↑ Shao (2006). "N-Bromosuccinimide and Lithium Bromide: An Efficient Combination for the Dibromination of Carbon–Carbon Unsaturated Bonds". Synlett 2006 (8): 1269–1271. DOI:10.1055/s-2006-941558.