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Heep Yunn School ( 協恩中學 ) Wu Hoi Man ( 胡凱文 ) Fan Lok Yan ( 范樂欣 )

Heep Yunn School ( 協恩中學 ) Wu Hoi Man ( 胡凱文 ) Fan Lok Yan ( 范樂欣 ) Hui Yuet Man ( 許悅敏 ) Tang Tsz Kwan ( 鄧紫君 ) Cheung Man Ying ( 張敏盈 ). Greener Epoxidation. chemistry IN water. Dioxirane epoxidation. Epoxidation is an important

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Heep Yunn School ( 協恩中學 ) Wu Hoi Man ( 胡凱文 ) Fan Lok Yan ( 范樂欣 )

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  1. Heep Yunn School ( 協恩中學) Wu Hoi Man ( 胡凱文) Fan Lok Yan ( 范樂欣) Hui Yuet Man ( 許悅敏) Tang Tsz Kwan ( 鄧紫君) Cheung Man Ying ( 張敏盈) Greener Epoxidation chemistry IN water

  2. Dioxirane epoxidation • Epoxidation is an important step in making drugs Epoxide Alkene eg. Triptolide Dioxirane epoxidation (in water- organic solvent)

  3. Objectives 1. Generalize the best system 2. Find key factors affecting two-phase reaction 3. Find a greener way to conduct epoxidation

  4. 1.Organic solvent: Acetonitrile 2.Ketone (catalyst): 1,1,1-trifluoroacetone 3.Additive in water: EDTA 8.pH of water = 9 6.Substrate : oxidizing agent 1 : 2 4.Substrate : catalyst 1 : 1 7.Temperature: 10 °C 5.Water : organic solvent 1 : 1.1 Conclusion Novel epoxidation method CH3COCF3 , pH 9 Oxone 10 °C CH3CN /Water,

  5. Conclusion Proportion of water as solvent 36 %  Ketone (catalyst) 90% 

  6. Finding the topic Testing of experiment Investigation Problems Modifications Report + presentation

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