Transition metal free intramolecular S-arylation: one-pot synthesis of thiochromen-4-ones
作者:T.A. Jenifer Vijay、Kebbahalli N. Nandeesh、Goravanahalli M. Raghavendra、Kanchugarakoppal S. Rangappa、Kempegowda Mantelingu
DOI:10.1016/j.tetlet.2013.09.094
日期:2013.11
A convenient one-pot method for the synthesis of thiochromen-4-ones by the condensation of 2'-haloacetophenone and dithioesters at room temperature in the presence of NaH in DMF in moderate to good yields has been developed. The method involves unusual intramolecular S-arylation. The reaction is operationally facile, readily scalable and offers rapid entry into substituted chromene-4-ones. (C) 2013 Elsevier Ltd. All rights reserved.