Abstract
As depicted in the scheme, the alkylidenamido complex 1, a N-rhenaimine, reacts with ketenes to afford the β-lactams 2−4, which possess a {Re(CO)3(bpy)} fragment as substituent at nitrogen. Clean demetalations using HOTf or MeOTf yield the free β-lactams or N-methyl-β-lactams along with [Re(OTf)(CO)3(bpy)]. DFT calculations help to rationalize why the reaction is faster than those of non transition metal N-substituted imines.
Original language | English |
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Pages (from-to) | 3706-3707 |
Number of pages | 2 |
Journal | Journal of the American Chemical Society |
Volume | 125 |
Issue number | 13 |
DOIs | |
Publication status | Published - 2 Apr 2003 |
Keywords
- imines
- ketenes
- beta-lactams