ORGN 110 |
| An economically cheap, environmentally safe Hunsdiecker reaction has been carried out efficiently with α,β-unsaturated aliphatic and aromatic carboxylic acids by using N-halo succinimides such as N- chloro succinimide (NCS), N-bromo succinimide (NBS) and N-iodo succinimide (NIS) using milli molar concentrations of ammonium molybdate as a catalyst. The reactions are dramatically accelerated under stirred conditions at room temperature. At reflux temperatures the yield of reaction products were further enhanced from good to excellent. The reaction with á, â-unsaturated aromatic carboxylic acids afforded â-halo styrenes in excellent yield while á,â-unsaturated aliphatic carboxylic acids underwent decarboxylation and to give corresponding halo derivatives. Reaction products were analyzed by spectroscopic methods |
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Heterocycles, Aromatics, Materials, Devices, Switches, Combinatorial Chemistry, Metal-Mediated Reactions
8:00 PM-10:00 PM, Sunday, 13 March 2005 Convention Center -- Hall D, Poster
Division of Organic Chemistry |