Subscribe to RSS
DOI: 10.1055/s-2005-869860
Selective Reduction of the Exocyclic Double Bond of Isoxazolones and Pyrazolones by Hantzsch 1,4-Dihydropyridine
Publication History
Publication Date:
07 June 2005 (online)
Abstract
Hantzsch 1,4-dihydropyridine (HEH) was used to realize the selective reduction of the exocyclic double bond of 4-arylmethylene- and 4-alkylidene-4H-isoxazol-5-ones and 4-arylmethylene-4H-pyrazol-5-ones.
Key words
Hantzsch 1,4-dihydropyridine - reduction - isoxazol-5-one - pyrazol-5-one
-
1a
Marukami Y.Kikuchi J.Hisaida Y.Hayashida O. Chem. Rev. 1996, 96: 721 -
1b
Yasui S.Ohno A. Bioorg. Chem. 1986, 14: 70 -
1c
Fukuzumi S.Tanaka T. In Photo-induced Electron Transfer Part C:Fox MA.Chanon M. Elsevier; Amsterdam: 1988. p.578 -
1d
Fukuzumi S.Suenobu T.Kawamura S.Ishida A.Mikami K. Chem. Commun. 1997, 291 -
1e
Fujii M.Yasui S.Nakamura K. In Reviews on Heteroatom Chemistry, Oae S. Vol. 20: MYU; Tokyo: 1999. p.167 -
2a
Yang JW.Hechavarria Fonseca MT.List B. Angew. Chem. Int. Ed. 2004, 43: 2 -
2b
Yang JW.Hechavarria Fonseca MT.Vignola N.List B. Angew. Chem. Int. Ed. 2005, 44: 108 -
2c
Ouellet SG.Tuttle JB.Macmillan DWC. J. Am. Chem. Soc. 2005, 127: 32 - 3
Garden SJ.Guimarães CRW.Corréa B.Oliveira CAF.Pinto AC.Alencastro RB. J. Org. Chem. 2003, 68: 8815 -
4a
Itoh T.Nagata A.Kurihara A.Miyazaki M.Ohsawa A. Tetrahedron Lett. 2002, 43: 3105 -
4b
Takashi I.Kazuhiro N.Michiko M.Hiroyuki I.Ayako K.Akio O. Tetrahedron 2004, 60: 6785 - 5
Zhu X.-Q.Wang H.-Y.Wang J.-S.Liu Y.-C. J. Org. Chem. 2001, 66: 344 -
6a
Lee HW.Kim BY.Ahn JB.Son HJ.Lee JW.Ahn SK.Hong CI. Heterocycles 2002, 57: 2163 -
6b
Torchy S.Cordonnier G.Barbry D.Eynde JJV. Molecules 2002, 7: 528 - 7
Jin M.-Z.Yang L.Wu L.-M.Liu Y.-C.Liu Z.-L. Chem. Commun. 1998, 2415 - 8
Zhang J.Jin M.-Z.Zhang W.Yang L.Liu Z.-L. Tetrahedron Lett. 2002, 43: 9687 -
9a
Shaw G. J. Chem. Soc. 1950, 720 -
9b
Risitano F.Grassi G.Foti F. Tetrahedron Lett. 1983, 24: 5893 -
9c
Risitano F.Grassi G.Caruso F.Foti F. Tetrahedron 1996, 52: 1443 -
9d
Beccalli EM.Benincori T.Marchesini A. Synthesis 1988, 886 -
11a
Batra S.Akhatar MS.Seth M.Bhaduri AP. J. Heterocycl. Chem. 1990, 27: 337 -
11b
Beccalli EM.Gelmi ML.Marchesini A. Tetrahedron 1998, 54: 14401 -
11c
Beccalli EM.Marchesini A.Pilati T. Synthesis 1991, 127 -
11d
Beccalli EM.Marchesini A.Pilati T. Synth. Commun. 1993, 23: 685
References
3-Phenyl-4-(4-nitrophenylmethyl)-2H-isoxazol-5-one (2h): colorless needles; mp 169-171 °C. 1H NMR (300 MHz, DMSO-d 6): δ = 3.42 (1 H, br), 3.82 (2 H, s), 7.43 (2 H, d, J = 8.2 Hz), 7.53 (5 H, s), 8.12 (2 H, d, J = 8.2 Hz). 13C NMR (75.43 MHz, DMSO-d6): δ = 27.4, 94.7, 123.7 × 2 C, 127.5 × 2 C, 127.4, 129.1 × 2 C, 129.3 × 2 C, 131.2, 146.1, 147.8, 162.0, 172.4. MS (EI): m/z (%) = 296 (2) [M+], 136 (100), 77 (5). ESI-HRMS: m/z calcd for C16H12N2O4 + H+: 297.0870; found: 297.0870.