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学科主题: 物理化学
题名: Large-pore mesoprous ethane-silicas as efficient heterogeneous asymmetric catalysts
作者: Jiang DM(蒋冬梅) ;  Gao JS(高金索) ;  Yang QH(杨启华) ;  Li C(李灿)
会议名称: 15th international zeolite conference
会议日期: 2007-8-12
出版日期: 2007-08-12
会议地点: 中国
通讯作者: 杨启华 ;  李灿
部门归属: 五室
主办者: 吉林大学
摘要: Large-pore mesoporous ethane-silicas with trans-(1R,2R)-diaminocyclohexane protruding in the channel were synthesized by one-step condensation of 1,2-bis(trimethoxysilyl)ethane and N-[(triethoxysilyl)propyl]-(-)-(1R,2R)-diaminocyclohexane in acidic medium using P123 as template. Mesoporous materials are used as catalysts for the asymmetric transfer hydrogenation (ATH) of acetophenone after complexing [Rh(cod)Cl]2. The catalyst with SBA-15 type mesostructure exhibits higher activity, compared to the catalyst with MCM-41 type mesostructuer.The post-decoration of tran-(1R,2R)-diaminocyclohexane in the pore of SBA-15 type mesoporous material was further demonstrated by reacting with p-toluenesulfonyl chloride. The modified material (complexed with [RuCl2(p-cymene)]2 gives an enanced 66% ee (R) for the ATH of acetophenone under air atmosphere in HCOONa-H2O, while only 2% ee (S) is observed on the original material under identical reaction condition.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/112530
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Jiang DM,Gao JS,Yang QH,et al. Large-pore mesoprous ethane-silicas as efficient heterogeneous asymmetric catalysts[C]. 见:15th international zeolite conference. 中国. 2007-8-12.
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