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beta-SiH-Containing Tris(silazido) Rare-Earth Complexes as Homogeneous and Grafted Single-Site Catalyst Precursors for Hydroamination

Titlebeta-SiH-Containing Tris(silazido) Rare-Earth Complexes as Homogeneous and Grafted Single-Site Catalyst Precursors for Hydroamination
Publication TypeJournal Article
Year of Publication2017
AuthorsEedugurala, N, Wang, ZR, Yan, KK, Boteju, KC, Chaudhary, U, Kobayashi, T, Ellern, A, Slowing, II, Pruski, M, Sadow, AD
JournalOrganometallics
Volume36
Pagination1142-1153
Date Published03
Type of ArticleArticle
ISBN Number0276-7333
Accession NumberWOS:000397838000006
Keywordschemistry, eta-2-silanimine complexes, h bond activation, hydroamination, intramolecular, lanthanide catalysts, mesoporous silica, molecular-structures, nmr-spectroscopy, structural-characterization, surface organometallic chemistry, Zirconium
Abstract

ng with THF and protonated silazido as HN(SiHMe2)tBu and H(2)NtBu. The surface species are characterized by multinuclear and multidimensional solid-state (SS) NMR spectroscopic techniques, as well as diffuse reflectance FTIR, elemental analysis, and reaction stoichiometry. A key (1)J(SiH) SSNMR measurement reveals that the grafted sites most closely resemble Ln.THF adducts, suggesting that siloxane coordination occurs in grafted compounds. These species catalyze the hydroamination/bicyclization of aminodialkenes, and both solution-phase and interfacial conditions provide the bicyclized product with equivalent cis:trans ratios. Similar diastereoselectivities mediated by catalytic sites under the two conditions suggest similar effective environments.

DOI10.1021/acs.organomet.6b00956
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3D Catalysis

Alternate JournalOrganometallics