Samarium(III) tris(2,6-di-tert-butyl-4-methylphenoxide): Preparation, properties, and catalytic activity in the Michael type reaction

Chemistry Letters

Volumn , Issue 4, 2002, Pages 426-427

  Katagiri, Kosuke ^a   Kameoka, Miyuki ^a   Nishiura, Masayoshi ^a   Imamoto, Tsuneo ^a  

^a CHIBA UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

2 BUTANONE; ACETONITRILE DERIVATIVE; CHALCONE DERIVATIVE; OXIDE; PINACOLONE; SAMARIUM; SAMARIUM TRIS(2,6 DI TERT BUTYL 4 METHYLPHENOXIDE); SODIUM 2,6 DI TERT BUTYL 4 METHYLPHENOXIDE; UNCLASSIFIED DRUG;

ARTICLE; ASSAY; CATALYSIS; CATALYST; CHEMICAL REACTION; CRYSTAL STRUCTURE; MICHAEL REACTION; PROTON NUCLEAR MAGNETIC RESONANCE; X RAY ANALYSIS;

EID: 0036015344     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.2002.426     Document Type: Article

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30. 6, 400 MHz, 25°C) δ 0.86 (s, tBu, 54H), δ 2.84 (s, Me, 9H), δ 8.17 (s, Ar-H, 6H).
31. -1, T = 278 K, R = 0.085, Rw = 0.142.
32. 3, 400 MHz, 25°C) δ 0.15 (s, tBu, 9H), δ 2.17 (dd, J = 3.42, 13.90 ,Hz, 1H), δ 2.48 (dd, J = 13.90, 13.40 Hz, 1H), δ 3.94 (dd, J = 11.24, 11.44 Hz, 1H), δ 3.97 (ddd, J = 3.42, 11.44, 13.40 Hz, 1H), δ 4.07 (d, J = 11.72 Hz, 1H), δ 4.15 (dd, J = 11.24, 11.72 Hz, 1H), δ 5.35 (s, OH, 1H), δ 6.89-7.56 (m, 20H). IR (KBr) 3460 (s), 1670 (s).
33. 2 under similar conditions afforded 4-nitro-1,3-diphenyl-1-butanone in 98% yield.