Hydrosilylation of Carbonyl Compounds Catalyzed by Iridium(I) Complexes with (−)‐Menthol‐Based Phosphorus(III) Ligands

Abstract

Iridium(I) complexes with phosphorus(III) ligands possessing naturally occurring menthol unit(s) [IrCl(COD){PPh n (OMenth) 3-n }], n = 0,1,2 (C1-C3) were synthesized and fully characterized by 1 H, 13 C, 31 P NMR, FT-IR spectroscopic techniques and elemental and X-ray diffraction analysis. C1-C3 were successfully applied in the hydrosilylation of several carbonyl compounds: aldehydes, ketones, esters, enals, and ynals. They exhibited very good activity and high tolerance to various functional groups providing silyl ethers with excellent yields. Subsequently, hydrolysis of the obtained product was carried out, furnishing us with diverse alcohols and aldehydes as attractive compounds in organic synthesis.

193Ir nuclear forward scattering of an iridium(I) complex

“…1). This complex serves as a catalyst for hydrogenation and other chemical reactions [12][13][14][15][16][17][18][19][20][21][22]. It has been investigated by conventional 193 Ir Mössbauer spectroscopy in the past [23,24] which makes this system ideal for elucidating the potential of 193 Ir NFS with respect to its chemical applications.…”