Copper catalyzed straightforward synthesis of 2-alkylbenzoxa(thia)azoles from aryl isocyanates/isothiocyanates and simple alkanes is reported. The protocol utilizes ditertiary butyl peroxide (DTBP) as a radical initiator and involves sequential formation of C-C and C-X (X = O, S) bonds followed by aromatization in a one-pot procedure.
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| http://dx.doi.org/10.1039/c4ob02488e | DOI Listing |
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