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Iron-Catalyzed Synthesis of Multisubstituted Furans Via One-Pot-Cyclization Reactions

Author: YaoWenJuan
Tutor: JiangHuanFeng
School: South China University of Technology
Course: Applied Chemistry
Keywords: Alkynol Electron-deficient alkynes Iron 1,5 - enynes ether rearrangement α-carbonyl furan
CLC: O626.11
Type: Master's thesis
Year: 2011
Downloads: 53
Quote: 0
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Abstract


Transition metal as an efficient catalyst , by virtue of its excellent catalytic performance has been much concern of chemists . Iron catalyst is a transition metal-catalyzed reactions research hotspot in recent years . Compared with other transition metals , iron is an inexpensive , environmentally friendly , valuable and almost non-toxic transition metal catalyst , and the Earth 's iron content , which are widely used in industrial development prospects Tamura and Kochi iron catalysis research pioneers , after the strong interest of the scientists caused the iron catalyst as an efficient transition metal catalyst . In the past few decades , the iron catalyst is widely used in organic reactions which achieved excellent results . Our group has developed a series of transition metal catalyzed multicomponent pot synthesis of furan derivatives . This thesis is mainly a \Readily available electron-deficient alkynes and alkynol generate 1,5 - enynes ether , then under in molysite Catalytic , 1,5 - enyne ether compound via the propargyl -Claisen rearrangement , cyclization , carbene oxidation final synthesis in organic synthesis has a very important position , multi-substituted α-carbonyl furan. The innovation of the present study is that : the development of a new kind of iron-catalyzed intermolecular reaction to synthesize the multi - substituted furan derivatives of α-carbonyl ; It is easy to operate, and relatively mild conditions , and the product selectivity are very high , the functional group of containment is also very good ; using cheap , environmentally friendly transition metal catalyst to overcome the shortcomings of the previous method requires precious metal catalyst , low cost , to conform to the trends and requirements of green chemistry .

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CLC: > Mathematical sciences and chemical > Chemistry > Organic Chemistry > Heterocyclic compounds > Five heterocycles containing a single different atoms > Oxa -mao ( furans) family
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