Cooperative effect of the camphor imine ligand in alkynols activation by trans-[MCl2(YNC10H14O)(2)] (M = Pd or Pt)

作者：Carvalho M Fernanda N N^*; Ferreira Ana S D; Galvao Adelino M

来源：Inorganica Chimica Acta, 2010, 363(8): 1767-1772.

DOI：10.1016/j.ica.2010.03.006

• Catalysis
• Cyclization
• Alkynols
• Camphor imine complexes
• Kinetic constants and mechanisms

The cooperative effect of the camphor imine ligand (YNC10H14O) in the cyclization of 5-hexyn-1-ol and 4-pentyn-1-ol promoted by complexes trans-[MCl2(YNC10H14O)(2)] (M = Pd, Y = NH2, NHMe, NMe2, OH, Ph; Pt, Y = NH2, NHMe, NMe2) is established from a direct relation between the constants calculated for conversion of 5-hexyn-1-ol (A) into 2-methyl-2-pent-4-ynyloxy-tetrahydropyran (B) and 4-pentyn-1-ol (C) into 2-methyl-2-pent-4-ynyloxy-tetrahydrofuran (D) and the basic character of the camphor imine substituent (Y). In the catalytic process acid-base interactions between the alkynol and the coordinated camphor imine are supported by the structural characterization of [PdCl4][Me2NHNC10H14O](2).

• 出版日期2010-5-5