Abstract
ALTHOUGH several syntheses of azulene (VIII; R=H) and azulene derivatives have deen described1, investigations on the chemistry of this non-benzenoid aromatic system have been hampered by the fact that the procedures hitherto available do not readily lend themselves to the preparation of azulenes on more than a relatively small scale. We have recently developed a new synthesis, based on the method of alkenylation with lithium alkenyls2, which offers some advantages in this respect.
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BRAUDE, E., FORBES, W. A New Route to Azulenes. Nature 168, 874 (1951). https://doi.org/10.1038/168874a0
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DOI: https://doi.org/10.1038/168874a0
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