Stereoselective preparation of (E)-(1,2-difluoro-1,2-ethenediyl) bis[tributylstannane] and stereospecific synthesis of (E)-1,2-difluorostilbenes |
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Authors: | Liu Qibo Burton Donald J |
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Institution: | Department of Chemistry, The University of Iowa, Iowa City, Iowa 52242, USA. |
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Abstract: | reaction: see text]. The novel bisstannane (E)-(1,2-difluoro-1,2-ethenediyl) bistributylstannane] 2 was stereoselectively prepared in a high overall yield through a sequential synthetic route from chlorotrifluoroethylene 1. The synthetic application of this novel bisstannane 2 was exemplified in the Pd(PPh3)4/CuI-catalyzed cross-coupling reactions with aryl iodides, yielding (E)-1,2-difluorostilbenes 3 in moderate to high yields. |
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