One??Pot Carboboration of Alkynes Using Lithium Borylcyanocuprate and the Subsequent Suzuki–Miyaura Cross??Coupling of the Resulting Tetrasubstituted …
Y Okuno, M Yamashita, K Nozaki
Index: Okuno, Yuri; Yamashita, Makoto; Nozaki, Kyoko European Journal of Organic Chemistry, 2011 , # 20-21 p. 3951 - 3958
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Abstract
Abstract We have developed a one-pot carboboration of internal alkynes using lithium borylcyanocuprates 3. Isolation of single crystals of 3·(thf) 3 enabled us to estimate its structural and spectroscopic features. Simple mixing of 3 with ester-substituted alkynes and alkynylarenes was followed by trapping of the resulting intermediate with electrophiles to give tetrasubstituted borylalkenes 4, 5, and 8 in moderate to good yields. Ligand ...
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