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Task-specific ionic liquid and CO2-cocatalysed efficient hydration of propargylic alcohols to α-hydroxy ketones
被引:94
|作者:
Zhao, Yanfei
[1
]
Yang, Zhenzhen
[1
]
Yu, Bo
[1
]
Zhang, Hongye
[1
]
Xu, Huanjun
[1
]
Hao, Leiduan
[1
]
Han, Buxing
[1
]
Liu, Zhimin
[1
]
机构:
[1] Chinese Acad Sci, Inst Chem, Key Lab Colloid Interface & Thermodynam, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
基金:
中国国家自然科学基金;
关键词:
CATALYZED HYDRATION;
ROOM-TEMPERATURE;
ALKYNES;
NANOPARTICLES;
D O I:
10.1039/c5sc00040h
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
The hydration of propargylic alcohols is a green route to synthesize alpha-hydroxy ketones. Herein a CO2-reactive ionic liquid (IL), [Bu4P][Im], was found to display high performance for catalyzing the hydration of propargylic alcohols in the presence of atmospheric CO2, and a series of propargylic alcohols could be converted into the corresponding alpha-hydroxy ketones in good to excellent yields. In the IL/CO2 reaction system, CO2 served as a cocatalyst by forming alpha-alkylidene cyclic carbonates with propargylic alcohols, and was released via the rapid hydrolysis of the carbonates catalysed by the IL. This is the first example of the efficient hydration of propargylic alcohols under metal-free conditions.
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页码:2297 / 2301
页数:5
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