Synthesis of novel fluorinated 4H-benzo[h]chromen-4-one and 4H-pyrano[3,2-h]quinolin-4-one derivatives
作者:Maurice Médebielle、Robert Keirouz、Etsuji Okada、Dai Shibata、William R. Dolbier
DOI:10.1016/j.tetlet.2007.11.146
日期:2008.1
New fluorinated 4H-benzo[h]chromen-4-one and 4H-pyrano[3,2-h]quinolin-4-one derivatives are obtained in moderate to good yields, through a one-pot aldolization–intramolecular SNAr process, from the tetrakis(dimethylamino)ethylene (TDAE) mediated reductive cleavage of two N,N-dimethylamino-bis-chlorodifluoroacetyl substrates in the presence of heteroaryl aldehydes.
新氟化4 ħ -苯并[ ħ ]苯并吡喃-4-酮和4- ħ吡喃并[3,2- ħ ]喹啉-4-酮衍生物在中度获得良好的产率,通过一釜醛醇缩合-分子内小号Ñ在杂芳基醛的存在下,由四(二甲基氨基)乙烯(TDAE)介导的Ar方法是两个N,N-二甲基氨基-双-氯二氟乙酰基底物的还原性裂解。