The first example of ligand-mediated dehydration of aldoximes
摘要:
The nitrile complex trans-[PtCl4(EtCN)(2)] reacts with the aldoximes HON=C(H)R [R = C(Ph)(=O), Me, Ph] in CH2Cl2 to afford kproducts of the addition of the aldoxime HON group across the nitrile CN triple bond, i.e. trans-[PtCl4{NH=C(Et)ON=C(H)R}(2)] (1-3). These compounds were characterized by elemental analyses, FAB MS. IR and H-1 and C-13{H-1} spectroscopies and X-ray structure determination has been performed for 1. In CHCl3 solution, 1-3 undergo the spontaneous imine ligand splitting to achieve the carboxamide complex trans-[PtCl4{NH=C(Et)OH}(2)] and RCN thus giving the first example of a ligand-mediated dehydration of aldoximes. The carboxamide and RCN products are also formed upon treatment of trans-[PtCl4(EtCN)(2)] with 2 equiv. of HON=C(H)R in CH2Cl2. (C) 2003 Elsevier B.V. All rights reserved.
The first example of ligand-mediated dehydration of aldoximes
摘要:
The nitrile complex trans-[PtCl4(EtCN)(2)] reacts with the aldoximes HON=C(H)R [R = C(Ph)(=O), Me, Ph] in CH2Cl2 to afford kproducts of the addition of the aldoxime HON group across the nitrile CN triple bond, i.e. trans-[PtCl4{NH=C(Et)ON=C(H)R}(2)] (1-3). These compounds were characterized by elemental analyses, FAB MS. IR and H-1 and C-13{H-1} spectroscopies and X-ray structure determination has been performed for 1. In CHCl3 solution, 1-3 undergo the spontaneous imine ligand splitting to achieve the carboxamide complex trans-[PtCl4{NH=C(Et)OH}(2)] and RCN thus giving the first example of a ligand-mediated dehydration of aldoximes. The carboxamide and RCN products are also formed upon treatment of trans-[PtCl4(EtCN)(2)] with 2 equiv. of HON=C(H)R in CH2Cl2. (C) 2003 Elsevier B.V. All rights reserved.