In:
Chemistry – A European Journal, Wiley, Vol. 26, No. 56 ( 2020-10-06), p. 12717-12721
Abstract:
Bismuth compounds are gaining importance as potential alternatives to transition‐metal complexes and electron deficient lighter p‐block compounds in homogeneous catalysis. Computational analysis on the two‐coordinate [(Me 2 NC 6 H 4 )Bi] 2+ possessing three electrophilic sites is experimentally evidenced by the isolation of [{Me 2 NC 6 H 4 }Bi{OP(NMe 2 ) 3 } 3 ][B(3,5‐C 6 H 3 Cl 2 ) 4 ] 2 . These observations led us to generate dicationic organobismuth catalyst, [(Me 2 NC 6 H 4 )Bi(L) 3 ] 2+ (L=aldehyde/ketone), evidenced by NMR spectroscopy in solution and by single‐crystal X‐ray diffraction in the solid state. It efficiently catalyzes hydrosilylation of aldehydes and ketones resulting in silyl ethers as the only products in high yields. Our investigations support a carbonyl activation mechanism at the bismuth center followed by Si−H addition.
Type of Medium:
Online Resource
ISSN:
0947-6539
,
1521-3765
DOI:
10.1002/chem.202002006
Language:
English
Publisher:
Wiley
Publication Date:
2020
detail.hit.zdb_id:
1478547-X
detail.hit.zdb_id:
1231884-X
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