Sreenivasulu, Chinnabattigalla and Thadathil, Ditto Abraham and Pal, Sumit and G, Satyanarayana
(2020)
A simple Lewis acid induced reaction of phenols with electrophiles: Synthesis of functionalized 4H-chromenes and ortho-benzylphenols.
Synthetic Communications, 50 (1).
pp. 112-122.
ISSN 0039-7911
(In Press)
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Abstract
Lewis acid ZnCl2 promoted cyclization protocol to 4H-chromenes is accomplished, using readily available phenols and acetophenones as starting materials. Interestingly, the process is feasible under the solvent free environment. Synthesis of a variety of 4H-chromenes have been accomplished using this strategy. In addition, this concept is extended to the synthesis of ortho-benzylphenols by treating phenols either with styrenes or secondary benzylic alcohols.
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