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A Convenient Route ...
A Convenient Route to 2-Bromo-3-chloronorbornadiene and 2,3-Dibromonorbornadiene
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- Lennartsson, Anders, 1980 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Quant, Maria, 1985 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Moth-Poulsen, Kasper, 1978 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2015-05-27
- 2015
- Engelska.
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Ingår i: Synlett. - : Georg Thieme Verlag KG. - 1437-2096 .- 0936-5214. ; 26:11, s. 1501-1504
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Abstract
Ämnesord
Stäng
- Substituted norbornadienes are useful in a wide range of applications, including molecular solar-thermal (MOST) energy storage systems. An important precursor for 2,3-substituted norbornadienes is 2-bromo-3-chloronorbornadiene, where the two halogen atoms can be substituted selectively through two consecutive Suzuki cross-coupling reactions. Previous routes to 2-bromo-3-chloronorbornadiene have used 1,2-dibromoethane as a brominating agent, a substance known to be carcinogenic and the use of which is restricted in certain countries. Herein is reported a one-pot route to 2-bromo-3-chloronorbornadiene in 50% yield using p-toluenesulfonyl bromide as a bromine source. In addition, the procedure has been adapted to allow synthesis of 2,3-dibromonorbornadiene in 37% yield.
Ämnesord
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
Nyckelord
- organometallic reagents
- chlorine
- alkenes
- bromine
- regioselectivity
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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