Synthesis and use of ortho-(branched alkoxy)-tert-butoxybenzenes
S Rast, M Stephan, B Mohar
Index: Rast, Slavko; Stephan, Michel; Mohar, Barbara Tetrahedron Letters, 2012 , vol. 53, # 50 p. 6815 - 6818
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Abstract
A series of sterically hindered o-(branched alkoxy)-tert-butoxybenzenes was efficiently prepared in good yields owing to a new practical and simple preparation of o-tert- butoxyphenol starting from catechol and isobutene. Use of DMF di-tert-butyl acetal reagent instead of isobutene/H2SO4 (cat.) for O-tert-butylation was very convenient in case of ortho bulky phenols affording the corresponding tert-butyl ethers in high yield and purity. This ...
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