Neurogen Corporation
Patent: US6291473 B1, 2001 ;
US 6291473 B1
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Neurogen Corporation
Patent: US6472402 B1, 2002 ;
US 6472402 B1
1: aniline; 2-hydroxy-1-cyclohexanone With toluene-4-sulfonic acid in cyclohexane
1 h; Heating;
2: malononitrile With piperidine in cyclohexane
Heating;
Mursakulov, Ismail G.; Guseinov, M. M.; Kasumov, N. K.; Zefirov, Nikolai S.; Samoshin, V. V.; Chalenko, E. G.
Tetrahedron, 1982 , vol. 38, # 14 p. 2213 - 2220