Siloxymethylamines as Aminomethylation Reagents for Amines Leading to Labile Diaminomethanes That can be Trapped as Their [Mo(CO)4] Complexes |
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| Authors: | Hemant K Sharma Paulina E Gonzalez Alexander L Craig Sanchita Chakrabarty Alejandro Metta‐Magaña Prof Keith H Pannell |
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| Affiliation: | Department of Chemistry, University of Texas at El Paso, El Paso, TX, USA |
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| Abstract: | Compound Et3SiOCH2NMe2 transfers Me2NCH2 to R2NH (R2=Et2, PhMe, Cr(η6‐C6H5)(CO)3]Me, PhH) to form previously unknown diaminomethanes, Me2NCH2NR2 and, in the case of R2=PhH, the triamine Me2NCH2N(Ph)CH2NMe2. The diaminomethanes exhibit an unreported disproportionation to a mixture of (R2N)2CH2, (Me2N)2CH2, and Me2NCH2NR2, which can be trapped as their Mo(CO)4(diamine)] complexes. Whereas PhMeNCH2NMe2 is a labile material, the metal‐substituted ((η6‐C6H5)Cr(CO)3]MeNCH2NMe2 is a stable material. The triamine Me2NCH2N(Ph)CH2NMe2 is unstable with respect to transformation to 1,3,5‐triphenyltriazine, but is readily trapped as the bidentate‐triamineMo(CO)4. All metal complexes were characterized by single‐crystal X‐ray diffraction. |
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| Keywords: | diaminomethane disproportionation molybdenum silanes siloxymethylamine |
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