Volume 132, Issue 7 pp. 2767-2771
Zuschrift

Aminoazanium of DABCO: An Amination Reagent for Alkyl and Aryl Pinacol Boronates

Xingxing Liu

Xingxing Liu

College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014 P. R. China

State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000 P. R. China

These authors contributed equally to this work.

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Qing Zhu

Qing Zhu

State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

These authors contributed equally to this work.

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Du Chen

Du Chen

State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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Prof. Lu Wang

Prof. Lu Wang

State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000 P. R. China

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Prof. Liqun Jin

Corresponding Author

Prof. Liqun Jin

College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014 P. R. China

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Prof. Chao Liu

Corresponding Author

Prof. Chao Liu

State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000 P. R. China

Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 311121 P. R. China

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First published: 09 December 2019
Citations: 14

Abstract

The aminoazanium of DABCO (H2N-DABCO) has been developed as a general and practical amination reagent for the direct amination of alkyl and aryl pinacol boronates. This compound is stable and practical for use as a reagent. Various primary, secondary. and tertiary alkyl−Bpin and aryl−Bpin substrates were aminated to give the corresponding amine derivatives. The amination is stereospecific. The anti-Markovnikov hydroamination of olefins was easily achieved by catalytic hydroboration with HBpin and in subsequent situ amination using H2N-DABCO. Moreover, the combination of 1,2-diboration of olefins, using B2pin2, with this amination process achieved the unprecedented 1,2-diamination of olefins. The amination protocol was also successfully extended to aryl pinacol boronates.

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