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Synthesis of benzofurans, indoles and benzopyrans via oxidative free radical cyclisations using cobalt salen complexes.

✍ Scribed by Vinod F. Patel; Gerald Pattenden; Jamie J. Russell


Publisher
Elsevier Science
Year
1986
Tongue
French
Weight
201 KB
Volume
27
Category
Article
ISSN
0040-4039

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✦ Synopsis


Reactions between the Co(I) species derived from cobalt(II1) 'salen'( and (e-ally11 or (g-but-3-enyl)

iodophenol, leads to isolatable cobalt complexes, viz (2), ( 13), which can be converted into substituted benzofurans, i.e. (S), ( 6) and benzopyrans, i.e. ( 14), ( 15); similarly interaction between (18) and Co(I) 'salen' led, in one step,