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Syntheses of asymmetric 2-benzopyrans. The influence of aromatic halogen substituents on the intramolecular cyclisation of enantiopure tethered phenolic lactaldehydes
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Syntheses of asymmetric 2-benzopyrans. The influence of aromatic halogen substituents on the intramolecular cyclisation of enantiopure tethered phenolic lactaldehydes

R.G.F. Giles, I.R. Green, F.J. Oosthuizen and C.P. Taylor
Arkivoc, Vol.IX, pp.99-116
2002
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Abstract

The syntheses of enantiopure brominated and chlorinated phenolic lactaldehydes are described as well as an investigation into their cyclisation to form the corresponding 2-benzopyran-4,5-diols. It is found that the choice of halogen is important in these processes.

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