5-(2-Fluorophenyl)-1-methyl-7-nitro-1,3-dihydro-2H-1,4-benzodiazepin-2-one (Flunitrazepam)

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2018-04-14 19h:01m:00s (UTC)

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Rx-ID: 4111011 View in Reaxys 1/2 Yield

Conditions & References

92 %

With hexamethylenetetramine, urotropin hydrochloride in ethanol, Heating Clarke, George M.; Lee, J. Barry; Swinbourne, Frederick J.; Williamson, Basil; Journal of Chemical Research, Miniprint; nb. 12; (1980); p. 4777 - 4793 View in Reaxys

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Rx-ID: 6013991 View in Reaxys 2/2 Yield

Conditions & References Sternbach,L.H. et al.; Journal of Medicinal Chemistry; vol. 6; (1963); p. 261 - 265 View in Reaxys Patent; Hoffmann-La Roche Inc.; US3203990; (1962); ; vol. 64; nb. 3576f; (1966) View in Reaxys Patent; Hoffmann-La Roche; US3123529; (1962); ; vol. 60; nb. 12035; (1964) View in Reaxys Patent; Sumitomo; DE2017060; (1970); ; vol. 74; nb. 22904; (1971) View in Reaxys Patent; Hoffmann-LaRoche; AT334376; (1977); DE2233482; ; vol. 78; nb. 111385 View in Reaxys Patent; Hoffmann-La Roche; CH568303; (1975); DE2334273; ; vol. 80; nb. 108590 View in Reaxys Patent; Hoffmann-La Roche; GB1039372; (1963); ; vol. 65; nb. 15408g; (1966) View in Reaxys According to the process of the present invention, there are prepared, for example, the following benzodiazepine derivatives: 1-Methyl-5-(o-fluorophenyl)-1,3-dihydro-2H- 1,4-benzodiazepin-2-one. 1-Cyclopropylmethyl-5-(o-fluorophenyl)-7-chloro- 1,3-dihydro-2H-1,4-benzodiazepin-2-one 1-Methyl-5-phenyl-7-trifluoromethyl-1,3-dihydro- 2H-1,4-benzodiazepin-2-one 1-Methyl-5-(o-fluorophenyl)-7-nitro-1,3-dihydro- 2H-1,4-benzodiazepin-2-one 1-(β-Vinyloxyethyl)-5-phenyl-7-chloro-1,3-dihydro- 2H-1,4-benzodiazepin-2-one 1-(β-Methoxy-β -ethoxyethyl)-5-phenyl-7-chloro- 1,3-dihydro-2H-1,4-benzodiazepin-2-one 1-(β-Acetoxyethyl)-5-phenyl-7-chloro-1,3-dihydro-2H-1,4-benzodiazepin-2-one 1-(β-Methylthioethyl)-5-phenyl-7-chloro-1,3-dihydro- 2H-1,4-benzodiazepin-2-one 1-(β-Methylsulfinylethyl)-5-phenyl-7-chloro- 1,3-dihydro-2H-1,4-benzodiazepin-2-one ... Patent; Sumitomo Chemical Company, Limited; US3991048; (1976); (A) English View in Reaxys

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