作者:Mahesh L Patil、Vishnu H Deshpande、S Ramlingam、Hanumant B Borate
DOI:10.1016/j.tet.2003.12.029
日期:2004.2
Synthesis of 4-carboxy-2,6-dimethoxyphenyl 2'-carboxy-6'-methoxyphenyl ketone, an important precursor for balanol's benzophenone portion, has been achieved via a short and efficient route in three steps using ortho-lithiation as the key step. In another approach aromatization of 2-(2'-methoxy-6'-methylbenzoyl)-5-methyl-1,3-cyclohexanedione afforded benzophenone precursor 2,6-dimethoxy-4-methylphenyl 2'-methoxy-6'-methylphenyl ketone along with the formation of substituted xanthone. (C) 2003 Elsevier Ltd. All rights reserved.