環十五酮是一種環酮,也是大環化合物,化學式C15H28O。它的結構與麝香酮相似,兩者只差一個甲基。它存在於大靈貓的臭腺中。[5][6]
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環十五酮最早由拉沃斯拉夫·魯日奇卡於1926年通過加熱分解十六烷二酸的釷鹽合成,產率只有2%。[7]在此之後也有用噻吩[8]或環十二酮[9]開始的合成方法。
環十五酮是有強烈麝香的無色或白色針狀晶體,難溶於水。[1]它的晶體結構已用晶體X射線繞射表徵,15個碳原子基本共面,羰基中的氧原子則位於此平面外。環十五酮呈單斜晶系,空間群P21/c(No. 14),晶格參數 a = 15.6634 Å、b = 5.5531 Å、c = 17.6928 Å 、β = 116.315°。[10]
環十五酮經過與乙二醇反應生成縮酮,用苯基三甲基三溴化銨溴化,經DBN脫溴,再用酸水解,最終與甲基溴化鎂在氯化亞銅存在下反應,生成麝香酮。[11]
環十五酮可用作香水的芳香味化合物和固定劑,[12][13]也存在於肥皂、洗髮精等個人護理產品中。[14]全球每年都會有幾十噸的環十五酮應用於此。[12]
環十五酮造成的健康風險非常小。給大鼠口服5 g/kg的環十五酮,以及給小鼠口服10 g/kg的環十五酮都沒有出現毒性。[4]環十五酮不刺激皮膚[4],沒有基因毒性和光毒性,在埃姆斯試驗中不表現為突變原。[12]
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Api, A.M.; Belsito, D.; Botelho, D.; Bruze, M.; Burton, G.A.; Buschmann, J.; Cancellieri, M.A.; Dagli, M.L.; Date, M.; Dekant, W.; Deodhar, C.; Fryer, A.D.; Jones, L.; Joshi, K.; Kumar, M.; Lapczynski, A.; Lavelle, M.; Lee, I.; Liebler, D.C.; Moustakas, H.; Na, M.; Penning, T.M.; Ritacco, G.; Romine, J.; Sadekar, N.; Schultz, T.W.; Selechnik, D.; Siddiqi, F.; Sipes, I.G.; Sullivan, G.; Thakkar, Y.; Tokura, Y. RIFM fragrance ingredient safety assessment, cyclopentadecanone, CAS Registry Number 502-72-7. Food and Chemical Toxicology. 2021, 156: 112474. doi:10.1016/j.fct.2021.112474.
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