-
14
-
-
0018595186
-
-
A.K. Bose, B. Ram, N.A. Hoffman, A.J. Hutchinson, and M.S. Manhas J. Heterocycl. Chem. 16 1979 1313
-
(1979)
J. Heterocycl. Chem.
, vol.16
, pp. 1313
-
-
Bose, A.K.1
Ram, B.2
Hoffman, N.A.3
Hutchinson, A.J.4
Manhas, M.S.5
-
17
-
-
0021134765
-
-
L.S. Hegedus, M.A. McGuire, L.M. Schultze, C. Yijun, and O.P. Anderson J. Am. Chem. Soc. 106 1984 2680
-
(1984)
J. Am. Chem. Soc.
, vol.106
, pp. 2680
-
-
Hegedus, L.S.1
McGuire, M.A.2
Schultze, L.M.3
Yijun, C.4
Anderson, O.P.5
-
24
-
-
4444268853
-
-
See, for instance: (a) B. Alcaide, R. de Murga, C. Pardo, and C. Rodríguez-Ranera Tetrahedron Lett. 45 2004 7255
-
(2004)
Tetrahedron Lett.
, vol.45
, pp. 7255
-
-
Alcaide, B.1
De Murga, R.2
Pardo, C.3
Rodríguez-Ranera, C.4
-
30
-
-
0030221457
-
-
For a preliminary communication of a part of this work, see: (a) B. Alcaide, A.M. Moreno, A. Rodríguez-Vicente, and M.A. Sierra Tetrahedron: Asymmetry 7 1996 2203
-
(1996)
Tetrahedron: Asymmetry
, vol.7
, pp. 2203
-
-
Alcaide, B.1
Moreno, A.M.2
Rodríguez-Vicente, A.3
Sierra, M.A.4
-
31
-
-
0029988586
-
-
(b) After the initiation of our efforts, a report appeared describing the aryl radical cyclization of N-allyl-4-(o-bromophenyl)-2-azetidinones leading to 1,2-benzocarbacephams. See: B.K. Banik, G.V. Subbaraju, M.S. Manhas, and A.K. Bose Tetrahedron Lett. 37 1996 1363
-
(1996)
Tetrahedron Lett.
, vol.37
, pp. 1363
-
-
Banik, B.K.1
Subbaraju, G.V.2
Manhas, M.S.3
Bose, A.K.4
-
33
-
-
3042663164
-
-
For reviews on the ketene-imine approach to β-lactams, see: (b) C. Palomo, J.M. Aizpurua, I. Ganboa, and M. Oiarbide Curr. Med. Chem. 11 2004 1837
-
(2004)
Curr. Med. Chem.
, vol.11
, pp. 1837
-
-
Palomo, C.1
Aizpurua, J.M.2
Ganboa, I.3
Oiarbide, M.4
-
35
-
-
0003828015
-
-
Wiley New York
-
T.T. Tidwell Ketenes 1995 Wiley New York pp 518-527
-
(1995)
Ketenes
-
-
Tidwell, T.T.1
-
37
-
-
85030812665
-
-
note
-
2/α-phenylethylamine complex as catalyst, using benzene as solvent and a Dean-Stark apparatus to remove the water formed during the reaction. Alternatively, N-alkylimines required in our work were smoothly prepared by the condensation of the appropriate aldehyde with the corresponding amine in dichloromethane at room temperature in the presence of anhydrous magnesium sulphate. A nearly quantitative yield of the Schiff base was obtained in all cases under these reaction conditions.
-
-
-
-
38
-
-
0034595608
-
-
The assignment of relative stereochemistry was determined by the observed coupling constant for methine protons H3 and H4, which is a very well established criterium in β-lactam chemistry. See, for example: (a) B. Alcaide, M.F. Aly, C. Rodríguez, and A. Rodríguez-Vicente J. Org. Chem. 65 2000 3453
-
(2000)
J. Org. Chem.
, vol.65
, pp. 3453
-
-
Alcaide, B.1
Aly, M.F.2
Rodríguez, C.3
Rodríguez-Vicente, A.4
-
40
-
-
0000411576
-
-
B. Alcaide, G. Domínguez, G. Escobar, U. Parreño, and J. Plumet Heterocycles 24 1986 1579
-
(1986)
Heterocycles
, vol.24
, pp. 1579
-
-
Alcaide, B.1
Domínguez, G.2
Escobar, G.3
Parreño, U.4
Plumet, J.5
-
44
-
-
0026454499
-
-
B. Alcaide, Y. Martín-Cantalejo, J. Pérez-Castells, J. Rodríguez-López, M.A. Sierra, A. Monge, and V. Pérez-García J. Org. Chem. 57 1992 5921
-
(1992)
J. Org. Chem.
, vol.57
, pp. 5921
-
-
Alcaide, B.1
Martín-Cantalejo, Y.2
Pérez-Castells, J.3
Rodríguez-López, J.4
Sierra, M.A.5
Monge, A.6
Pérez-García, V.7
-
50
-
-
0000893313
-
-
B. Giese, B. Kopping, T. Göbel, J. Dickhaut, G. Thoma, K.J. Kulicke, and F. Trach Org. React. 48 1996 301 856
-
(1996)
Org. React.
, vol.48
, pp. 301-856
-
-
Giese, B.1
Kopping, B.2
Göbel, T.3
Dickhaut, J.4
Thoma, G.5
Kulicke, K.J.6
Trach, F.7
-
53
-
-
0035831074
-
-
-1). However, we and others were able to prepare seven-membered rings by radical cyclization of β-lactam-tethered haloalkenes or alkynes. See: (a) B. Alcaide, P. Almendros, and C. Aragoncillo J. Org. Chem. 66 2001 1612
-
(2001)
J. Org. Chem.
, vol.66
, pp. 1612
-
-
Alcaide, B.1
Almendros, P.2
Aragoncillo, C.3
-
54
-
-
0034707366
-
-
D.J. Penfold, K. Pike, A. Genge, M. Anson, J. Kitteringham, and J.D. Kilburn Tetrahedron Lett. 41 2000 10347
-
(2000)
Tetrahedron Lett.
, vol.41
, pp. 10347
-
-
Penfold, D.J.1
Pike, K.2
Genge, A.3
Anson, M.4
Kitteringham, J.5
Kilburn, J.D.6
-
59
-
-
0036186587
-
-
For a review on the selective bond cleavage of the β-lactam nucleus, see: B. Alcaide, and P. Almendros Synlett 2002 381
-
(2002)
Synlett
, pp. 381
-
-
Alcaide, B.1
Almendros, P.2
-
63
-
-
0032506587
-
-
These values are in good agreement with previously reported data for related compounds obtained by different methods. See: F. Bertha, M. Fetter, M. Kajtár-Peredy, K. Lempert, and G. Czira Tetrahedron 54 1998 15227
-
(1998)
Tetrahedron
, vol.54
, pp. 15227
-
-
Bertha, F.1
Fetter, M.2
Kajtár-Peredy, M.3
Lempert, K.4
Czira, G.5
-
66
-
-
33751498908
-
-
C. Schmid, J.D. Bryant, M. Dowlatzedah, J. Phillips, D.E. Prather, R.D. Schantz, N.L. Sear, and C.S. Vianco J. Org. Chem. 56 1991 4056
-
(1991)
J. Org. Chem.
, vol.56
, pp. 4056
-
-
Schmid, C.1
Bryant, J.D.2
Dowlatzedah, M.3
Phillips, J.4
Prather, D.E.5
Schantz, R.D.6
Sear, N.L.7
Vianco, C.S.8
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