Mass spectrometry in structural and stereochemical problems. CXXXIV. Electron impact induced alkyl and aryl rearrangements in .alpha.-arylidene cyclic ketones
作者:Roger L. N. Harris、Frank. Komitsky、Carl. Djerassi
DOI:10.1021/ja00994a036
日期:1967.8
Demethylaromatization of cyclohexadienones by iodotriphenylphosphonium iodide
A highly efficient and metal-free demethylation and concomitant aromatization of cyclohexadienones using iodotriphenylphosphonium iodide was developed. A variety of steroidal and non-steroidal substrates smoothly underwent demethylaromatization reaction generating the corresponding phenolic products in good yields. This approach exhibits broad functional group tolerance. An ionic mechanism of synergistic