1130141-00-2Relevant academic research and scientific papers
Gold-catalyzed cyclization of enediynes and arenediynes to 6H-benzo[c]chromen-6-one and dibenzo[c,h]chromen-6-one derivatives
Chen, Chin-Chau,Hsu, Chia-Ling,Wu, Ming-Jung
, p. 1034 - 1043 (2019/01/26)
The efficient synthesis of 6H-benzo[c]chromen-6-one and dibenzo[c,h]chromen-6-one derivatives is described. Thus, treatment of arenediynes 1 and enediynes 5 with 5 mol % Ph3PAuCl and 10 mol % of AgSbF6 in refluxing toluene gave dibenzo[c,h]chromen-6-ones 4 and 6H-benzo[c]chromen-6-ones 6, in good yields, respectively.
Palladium-catalyzed cyclization of enediynes to benzopyranones
Chang, Wei-Ren,Lo, Yu-Hsiang,Lee, Chia-Ying,Wu, Ming-Jung
supporting information; experimental part, p. 1248 - 1252 (2009/06/25)
Treatment of methyl 2-[6-substituted-3(Z)-hexen-1,5-diynyl]benzoates (1) with five mol% of palladium chloride and three equivalents of cupric chloride in refluxing acetonitrile gave dibenzo[b,d]pyran-6-ones (2) in modest to good yields.
