Solvent-free Zn(OTf)₂-catalyzed dehydrative cross coupling of propargyl alcohols with diarylphosphine oxides to afford allenylphosphine oxides

Jianlin YangState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, China;

Ming ZhangState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, China;

Chao DongState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, China;

Li-Biao HanNational Institute of Advanced Industrial Science & Technology (AIST), Tsukuba, Ibaraki, Japan

Ruwei ShenState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, China; Correspondence[email protected]

http://orcid.org/0000-0002-8834-3256

Abstract

A less expensive and more environmentally friendly Zn(OTf)₂-catalyzed dehydrative coupling reaction of propargyl alcohols with diarylphosphine oxides is reported. The reaction takes place under mild and solvent free conditions, and features a high regioselectivity to provide an effective method for the synthesis of some diarylphosphinyl allenes in moderate to high yields.

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Acknowledgment

We thank the support from the National Natural Science Foundation of China (21302095), Jiangsu Provincial NSFC (BK20130945) and Nanjing Tech University.

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Solvent-free Zn(OTf)₂-catalyzed dehydrative cross coupling of propargyl alcohols with diarylphosphine oxides to afford allenylphosphine oxides

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Solvent-free Zn(OTf)2-catalyzed dehydrative cross coupling of propargyl alcohols with diarylphosphine oxides to afford allenylphosphine oxides

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Solvent-free Zn(OTf)₂-catalyzed dehydrative cross coupling of propargyl alcohols with diarylphosphine oxides to afford allenylphosphine oxides