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Volumn 65, Issue 3, 2009, Pages 648-658

Rearrangements of tetrahydroimidazo[1,5-b]isoxazole-2,3-dicarboxylates to pyrrolo[1,2-e]imidazol-6-ols, precursors of 2,5-dihydro-1H-pyrrole derivatives

Author keywords

4 Isoxazolines; Cyclic nitrones; Dipolar cycloaddition; Iminium salts; LFERs; NHCs; Pyrrole derivative; Rearrangement

Indexed keywords

1 (4 BROMOPHENYL) 4 PHENYL 2,5 DIHYDRO 1H IMIDAZOL 3 OXIDE; 1 (4 CHLOROPHENYL) 4 PHENYL 2,5 DIHYDRO 1H IMIDAZOL 3 OXIDE; 1 (4 METHOXYPHENYL) 4 PHENYL 2,5 DIHYDRO 1H IMIDAZOL 3 OXIDE; 1 4 DIPHENYL 2,5 DIHYDRO 1H IMIDAZOL 3 OXIDE; 2 (4 BROMOPHENYL) 3 METHOXY 7 (METHOXYCARBONYL) 5 OXO 7A PHENYL 2,3,5,7A TETRAHYDRO 1H PYRROLO[1,2 E]IMIDAZOL 6 OLATE; 2 (4 CHLOROPHENYL) 3 METHOXY 7 (METHOXYCARBONYL) 5 OXO 7A PHENYL 2,3,5,7A TETRAHYDRO 1H PYRROLO[1,2 E]IMIDAZOL 6 OLATE; 3 METHOXY 7 (METHOXYCARBONYL) 2 (4 METHOXYPHENYL) 5 OXO 7A PHENYL 2,3,5,7A TETRAHYDRO 1H PYRROLO[1,2 E]IMIDAZOL 6 OLATE; 3 METHOXY 7 (METHOXYCARBONYL) 5 OXO 2,7A DIPHENYL 2,3,5,7A TETRAHYDRO 1H PYRROLO[1,2 E]IMIDAZOL 6 OLATE; 3 METHOXY 7 (METHOXYCARBONYL) 5 OXO 7A PHENYL 2 4 TOLYL 2,3,5,7A TETRAHYDRO 1H PYRROLO[1,2 E]IMIDAZOL 6 OLATE; 4 PHENYL 1 4 TOLYL 2,5 DIHYDRO 1H IMIDAZOL 3 OXIDE; [1,3 BIS(4 CHLOROPHENYL)IMIDAZOLIDIN 4 YL](METHYL)METHANONE 1'D; [1,3 BIS(4 CHLOROPHENYL)IMIDAZOLIDIN 4 YL](METHYL)METHANONE 1'E; DIMETHYL 3A PHENYL 5 4 TOLYL 3A,4,5,6 TETRAHYDROIMIDAZO[1,5 B]ISOXAZOLE 2,3 DICARBOXYLATE; DIMETHYL 3A,5 DIPHENYL 3A,4,5,6 TETRAHYDROIMIDAZO[1,5 B]ISOXAZOLE 2,3 DICARBOXYLATE; DIMETHYL 5 (4 BROMOPHENYL) 3A PHENYL 3A,4,5,6 TETRAHYDROIMIDAZO[1,5 B]ISOXAZOLE 2,3 DICARBOXYLATE; DIMETHYL 5 (4 CHLOROPHENYL) 3A PHENYL 3A,4,5,6 TETRAHYDROIMIDAZO[1,5 B]ISOXAZOLE 2,3 DICARBOXYLATE; DIMETHYL 5 (4 METHOCYPHENYL) 3A PHENYL 3A,4,5,6 TETRAHYDROIMIDAZO[1,5 B]ISOXAZOLE 2,3 DICARBOXYLATE; METHYL 1 FORMYL 4 HYDROXY 2 [(4 METHOXYPHENYLAMINO)METHYL] 5 OXO 2 PHENYL 2,5 DIHYDRO 1H PYRROLE 3 CARBOXYLATE; METHYL 1 FORMYL 4 HYDROXY 5 OXO 2 PHENYL 2 [(PHENYLAMINO)METHYL] 2,5 DIHYDRO 1H PYRROLE 3 CARBOXYLATE; METHYL 2 [[N (4 BROMOPHENYL)LFORMAMIDO]METHYL] 4 HYRDOXY 5 OXO 2 PHENYL 2,5 DIHYDRO 1H PYRROLE 3 CARBOXYLATE; METHYL 2[(4 BROMOPHENYLAMINO)METHYL] 1 FORMYL 4 HYDROXY 5 OXO 2 PHENYL 2,5 DIHYDRO 1H PYRROLE 3 CARBOXYLATE; METHYL 2[(4 CHLOROPHENYLAMINO)METHYL] 1 FORMYL 4 HYDROXY 5 OXO 2 PHENYL 2,5 DIHYDRO 1H PYRROLE 3 CARBOXYLATE; METHYL 2[(4 TOLUIDINO)METHYL] 1 FORMYL 4 HYDROXY 5 OXO 2 PHENYL 2,5 DIHYDRO 1H PYRROLE 3 CARBOXYLATE; METHYL 4 HYDROXY 2 [[N (4 CHLOROPHENYL)LFORMAMIDO]METHYL] 5 OXO 2 PHENYL 2,5 DIHYDRO 1H PYRROLE 3 CARBOXYLATE; METHYL 4 HYDROXY 2 [[N (4 METHOXYPHENYL)LFORMAMIDO]METHYL] 5 OXO 2 PHENYL 2,5 DIHYDRO 1H PYRROLE 3 CARBOXYLATE; METHYL 4 HYDROXY 5 OXO 2 PHENYL 2 [(N PHENYLFORMAMIDO)METHYL] 2,5 DIHYDRO 1H PYRROLE 3 CARBOXYLATE; METHYL 4 HYDROXY 5 OXO 2 PHENYL 2 [(N TOLYLFORMAMIDO)METHYL] 2,5 DIHYDRO 1H PYRROLE 3 CARBOXYLATE; PYRROLE DERIVATIVE; UNCLASSIFIED DRUG;

EID: 57149142225     PISSN: 00404020     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tet.2008.11.019     Document Type: Article
Times cited : (11)

References (40)
  • 5
    • 0013074017 scopus 로고    scopus 로고
    • Synthetic Applications of 1,3-Dipolar Cycloaddition Chemistry toward Heterocycles and Natural Products
    • Nitrones, United Kingdom, Chichester
    • Martin J.N., and Jones R.C.F. Synthetic Applications of 1,3-Dipolar Cycloaddition Chemistry toward Heterocycles and Natural Products. Nitrones. The Chemistry of Heterocyclic Compounds Vol. 59 (2002), United Kingdom, Chichester 1-81
    • (2002) The Chemistry of Heterocyclic Compounds , vol.59 , pp. 1-81
    • Martin, J.N.1    Jones, R.C.F.2
  • 10
  • 34
    • 57149122577 scopus 로고    scopus 로고
    • note
    • 2 In the cases of p-chloro- and bromoanilines the corresponding (1,3-bis(4-aryl)imidazolidin-4-yl)(phenyl)methanones 1′d,e were isolated. The probable mechanism for their formation is discussed below. (Scheme 6): the methylenimminium salt A probably in equilibrium with N-bromomethylenaniline B reacts with anilinoacetophenone oxime to give intermediate C. The latter underwent condensation with formaldehyde and hydrolyze to imminium salts D and E the intramolecular Mannich reaction of which produce compounds 1′a-e.
  • 35
    • 57149134533 scopus 로고    scopus 로고
    • note
    • 2Na were shown to be identical with those prepared according to the main procedure.
  • 36
    • 57149130429 scopus 로고    scopus 로고
    • note
    • 16 group is one of the most important functional groups in chemistry. Its planarity and relatively high barrier to rotation about the C-N bond are important factors in determining the conformations of peptides and related compounds.
  • 39
    • 57149122880 scopus 로고    scopus 로고
    • note
    • 2=0.99.
  • 40
    • 57149138443 scopus 로고    scopus 로고
    • note
    • 3 solution confirmed the stereochemistry of the (E)-7. Irradiation of the singlet at 8.26 led to the enhancement of the N-Ar ortho protons (0.8%), while the irradiation of N-Ar ortho protons enhanced the C3-H by 2.26%. The same irradiation enhanced also the C1-Ha (upward) by 2.31% C1-Hb by 1%. The irradiation of the latter proton signal enhanced the N-Ar ortho protons signal, C1-Hb (downward) and the C7a-Ph ortho protons by 5.48, 19.8 and 4.26%, respectively. The irradiation of C1-Hb enhanced the signals of C1-Ha, N-Ar ortho and C7a-Ph ortho by 17, 4.65 and 2.93%, respectively.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.