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0343050995
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Ger. Offen., DE 3,525,109 A1, 1987
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Selected symmetrical pyrrolo[3,2-b]pyrrole-2,5-diones have been prepared in three steps from (N-phenylacetyl)-acetic acid amino ester: (a) Bayer AG, a one step synthesis using pulvinic acid proceeded under harsh conditions (autoclave reaction, 140-180°C: Fürstenwerth, H. Ger. Offen., DE 3,525,109 A1, 1987; Chem. Abstr. 1987, 106, 103815f. (b) Ciba-Geigy: Rochat, A. C.; Iqbal, A.; Pfenninger, J.; Casser, L. Eur. Pat. Appl., EP 016309, 1984. See also: Solberg, Y. Z. Naturforsch. 1977, 32c, 292. Stachel, H.-D. Arch. Pharm. Ber. Dtsch. Pharm. Ges. 1962, 295, 735. (e) Mukai, T.; Konno, A.; Kumagai, T.; Satake, K. Chem. Lett. 1985, 1809. (f) Stachel, H.-D.; Schorp, M.; Maier, L.; Dandl, K. Liebigs Ann. Chem. 1994, 1121.
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Chem. Abstr.
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Fürstenwerth, H.1
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15
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0345920766
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Eur. Pat. Appl., EP 016309, 1984
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Selected symmetrical pyrrolo[3,2-b]pyrrole-2,5-diones have been prepared in three steps from (N-phenylacetyl)-acetic acid amino ester: (a) Bayer AG, a one step synthesis using pulvinic acid proceeded under harsh conditions (autoclave reaction, 140-180°C: Fürstenwerth, H. Ger. Offen., DE 3,525,109 A1, 1987; Chem. Abstr. 1987, 106, 103815f. (b) Ciba-Geigy: Rochat, A. C.; Iqbal, A.; Pfenninger, J.; Casser, L. Eur. Pat. Appl., EP 016309, 1984. See also: Solberg, Y. Z. Naturforsch. 1977, 32c, 292. Stachel, H.-D. Arch. Pharm. Ber. Dtsch. Pharm. Ges. 1962, 295, 735. (e) Mukai, T.; Konno, A.; Kumagai, T.; Satake, K. Chem. Lett. 1985, 1809. (f) Stachel, H.-D.; Schorp, M.; Maier, L.; Dandl, K. Liebigs Ann. Chem. 1994, 1121.
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Ciba-Geigy1
Rochat, A.C.2
Iqbal, A.3
Pfenninger, J.4
Casser, L.5
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16
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0017361975
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Selected symmetrical pyrrolo[3,2-b]pyrrole-2,5-diones have been prepared in three steps from (N-phenylacetyl)-acetic acid amino ester: (a) Bayer AG, a one step synthesis using pulvinic acid proceeded under harsh conditions (autoclave reaction, 140-180°C: Fürstenwerth, H. Ger. Offen., DE 3,525,109 A1, 1987; Chem. Abstr. 1987, 106, 103815f. (b) Ciba-Geigy: Rochat, A. C.; Iqbal, A.; Pfenninger, J.; Casser, L. Eur. Pat. Appl., EP 016309, 1984. (c) See also: Solberg, Y. Z. Naturforsch. 1977, 32c, 292. Stachel, H.-D. Arch. Pharm. Ber. Dtsch. Pharm. Ges. 1962, 295, 735. (e) Mukai, T.; Konno, A.; Kumagai, T.; Satake, K. Chem. Lett. 1985, 1809. (f) Stachel, H.-D.; Schorp, M.; Maier, L.; Dandl, K. Liebigs Ann. Chem. 1994, 1121.
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Z. Naturforsch.
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Solberg, Y.1
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17
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0042538455
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Selected symmetrical pyrrolo[3,2-b]pyrrole-2,5-diones have been prepared in three steps from (N-phenylacetyl)-acetic acid amino ester: (a) Bayer AG, a one step synthesis using pulvinic acid proceeded under harsh conditions (autoclave reaction, 140-180°C: Fürstenwerth, H. Ger. Offen., DE 3,525,109 A1, 1987; Chem. Abstr. 1987, 106, 103815f. (b) Ciba-Geigy: Rochat, A. C.; Iqbal, A.; Pfenninger, J.; Casser, L. Eur. Pat. Appl., EP 016309, 1984. See also: Solberg, Y. Z. Naturforsch. 1977, 32c, 292. (d) Stachel, H.-D. Arch. Pharm. Ber. Dtsch. Pharm. Ges. 1962, 295, 735. (e) Mukai, T.; Konno, A.; Kumagai, T.; Satake, K. Chem. Lett. 1985, 1809. (f) Stachel, H.-D.; Schorp, M.; Maier, L.; Dandl, K. Liebigs Ann. Chem. 1994, 1121.
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Stachel, H.-D.1
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18
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0347181960
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Selected symmetrical pyrrolo[3,2-b]pyrrole-2,5-diones have been prepared in three steps from (N-phenylacetyl)-acetic acid amino ester: (a) Bayer AG, a one step synthesis using pulvinic acid proceeded under harsh conditions (autoclave reaction, 140-180°C: Fürstenwerth, H. Ger. Offen., DE 3,525,109 A1, 1987; Chem. Abstr. 1987, 106, 103815f. (b) Ciba-Geigy: Rochat, A. C.; Iqbal, A.; Pfenninger, J.; Casser, L. Eur. Pat. Appl., EP 016309, 1984. See also: Solberg, Y. Z. Naturforsch. 1977, 32c, 292. Stachel, H.-D. Arch. Pharm. Ber. Dtsch. Pharm. Ges. 1962, 295, 735. (e) Mukai, T.; Konno, A.; Kumagai, T.; Satake, K. Chem. Lett. 1985, 1809. (f) Stachel, H.-D.; Schorp, M.; Maier, L.; Dandl, K. Liebigs Ann. Chem. 1994, 1121.
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Chem. Lett.
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Mukai, T.1
Konno, A.2
Kumagai, T.3
Satake, K.4
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19
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84988122213
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Selected symmetrical pyrrolo[3,2-b]pyrrole-2,5-diones have been prepared in three steps from (N-phenylacetyl)-acetic acid amino ester: (a) Bayer AG, a one step synthesis using pulvinic acid proceeded under harsh conditions (autoclave reaction, 140-180°C: Fürstenwerth, H. Ger. Offen., DE 3,525,109 A1, 1987; Chem. Abstr. 1987, 106, 103815f. (b) Ciba-Geigy: Rochat, A. C.; Iqbal, A.; Pfenninger, J.; Casser, L. Eur. Pat. Appl., EP 016309, 1984. See also: Solberg, Y. Z. Naturforsch. 1977, 32c, 292. Stachel, H.-D. Arch. Pharm. Ber. Dtsch. Pharm. Ges. 1962, 295, 735. (e) Mukai, T.; Konno, A.; Kumagai, T.; Satake, K. Chem. Lett. 1985, 1809. (f) Stachel, H.-D.; Schorp, M.; Maier, L.; Dandl, K. Liebigs Ann. Chem. 1994, 1121.
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Liebigs Ann. Chem.
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Stachel, H.-D.1
Schorp, M.2
Maier, L.3
Dandl, K.4
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0033953818
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Langer, P.; Wuckelt, J.; Döring, M. J. Org. Chem. 2000, 65, 729.
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Langer, P.1
Wuckelt, J.2
Döring, M.3
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21
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84985554204
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Push-pull substituted heterocycles are of considerable importance. For a review, see: (a) Gompper, R.; Wagner, H.-U. Angew. Chem., Int. Ed. Engl. 1988, 27, 1437; Angew. Chem. 1988, 100, 1492. (b) See also: Effenberger, F.; Schlosser, H.; Bäuerle, P.; Maier, S.; Port, H.; Wolf, H. C. Angew. Chem., Int. Ed. Engl. 1988, 27, 281; Angew. Chem. 1988, 100, 274.
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Angew. Chem., Int. Ed. Engl.
, vol.27
, pp. 1437
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Gompper, R.1
Wagner, H.-U.2
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22
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84985554204
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Push-pull substituted heterocycles are of considerable importance. For a review, see: (a) Gompper, R.; Wagner, H.-U. Angew. Chem., Int. Ed. Engl. 1988, 27, 1437; Angew. Chem. 1988, 100, 1492. (b) See also: Effenberger, F.; Schlosser, H.; Bäuerle, P.; Maier, S.; Port, H.; Wolf, H. C. Angew. Chem., Int. Ed. Engl. 1988, 27, 281; Angew. Chem. 1988, 100, 274.
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Angew. Chem.
, vol.100
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23
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84990138107
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Push-pull substituted heterocycles are of considerable importance. For a review, see: (a) Gompper, R.; Wagner, H.-U. Angew. Chem., Int. Ed. Engl. 1988, 27, 1437; Angew. Chem. 1988, 100, 1492. (b) See also: Effenberger, F.; Schlosser, H.; Bäuerle, P.; Maier, S.; Port, H.; Wolf, H. C. Angew. Chem., Int. Ed. Engl. 1988, 27, 281; Angew. Chem. 1988, 100, 274.
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(1988)
Angew. Chem., Int. Ed. Engl.
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, pp. 281
-
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Effenberger, F.1
Schlosser, H.2
Bäuerle, P.3
Maier, S.4
Port, H.5
Wolf, H.C.6
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24
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84985554204
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Push-pull substituted heterocycles are of considerable importance. For a review, see: (a) Gompper, R.; Wagner, H.-U. Angew. Chem., Int. Ed. Engl. 1988, 27, 1437; Angew. Chem. 1988, 100, 1492. (b) See also: Effenberger, F.; Schlosser, H.; Bäuerle, P.; Maier, S.; Port, H.; Wolf, H. C. Angew. Chem., Int. Ed. Engl. 1988, 27, 281; Angew. Chem. 1988, 100, 274.
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(1988)
Angew. Chem.
, vol.100
, pp. 274
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26
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0345920765
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note
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2 (305.06): C, 62.99; H, 4.58; N, 9.17. Found: C, 63. 08; H, 4.96; N, 9.09. All new compounds gave satisfactory spectroscopic and analytical and/or high resolution mass data.
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27
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0347811997
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note
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2 (512.6): C, 79.66; H, 5.51; N, 5.46. Found: C, 79.19; H, 5.86; N, 5.37.
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28
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0035044527
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For symmetrical derivatives, see: Langer, P.; Wuckelt, J.; Döring, M.; Görls, H. Eur. J. Org. Chem. 2001, 1503.
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(2001)
Eur. J. Org. Chem.
, pp. 1503
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Langer, P.1
Wuckelt, J.2
Döring, M.3
Görls, H.4
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