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Macrolactonization of Alkynyl Alcohol through Rh(I)/Yb(III) Catalysis
Wen-Wen Zhang1,2, Tao-Tao Gao2, Li-Jin Xu1
1Department of Chemistry , Renmin University of China , Beijing 100084 , China.
Abstract:
A catalytic macrolactonization through oxidative cyclization of alkynyl alcohol by synergistic transition-metal and Lewis-acid catalysis was developed. Because the alkynyl alcohol substrates involved in this method are different from the seco acids that are used in conventional macrolactonization methods, the current method provides a strategically distinct entry to macrolactones. In addition to the operational simplicity, this macrolactonization protocol proceeds at relatively high concentration, precluding the need for high dilution or slow addition procedures.
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