Four-coordinate organoboron compounds from beta-enaminonitriles and diazonium salts

作者：Svobodova Marketa^*; Simunek Petr; Machacek Vladimir; Struncova Lucie; Ruzicka Ales

来源：Tetrahedron, 2012, 68(8): 2052-2060.

DOI：10.1016/j.tet.2011.12.082

• Triazaborines
• Enaminonitriles
• Diazonium tetraphenylborate
• Boron heterocycles

beta-Enaminonitriles react with substituted benzenediazonium tetraphenylborates to form 1,2,4,3 lambda(4)-triazaborines or 1,3,2 lambda(4)-oxazaborines. The formation of either the first or the second product is affected by the reaction conditions, especially by the presence of water in the reaction components and in the solvent. If the reaction is performed under anhydrous conditions, the major product is the triazaborine. When 'wet' diazonium salts are used or a small amount of water is added into the reaction mixture, oxazaborine is the product.

• 出版日期2012-2-25