Reaktionsgleichung
[CH3:1][NH:2]/[C:3](/[NH:8][CH2:9][CH2:10][S:11]CC1N=C(CN(C)C)SC=1)=[CH:4]\[N+:5]([O-])=[O:6].ClCC1N=C(CN(C)C)SC=1.SCCNC(NC)=C[N+]([O-])=O>>[CH3:1][NH:2][C:3]1[C:4](=[N:5][OH:6])[S:11][CH2:10][CH2:9][N:8]=1Komponenten
4
Versuchsvorschrift
The preparation of nizatidine by fusing 4-chloromethyl-2-dimethylaminomethylthiazole with N-(2-mercaptoethyl)-N'-methyl-2-nitro-1,1-ethenediamine has been suggested generically in EP 49618. However, we have found that N-(2-mercaptoethyl)-N'-methyl-2-nitro-1,1-ethenediamine cannot be isolated and stored. Our attempts to prepare this compound have always produced the disulphide, N-methyl-[N'-[2-(N"-methyl-2-nitro-1,1-ethenediamine)ethyldisulphanyl]ethyl]-2-nitro-1,1-ethenediamine and 3-methylamino-5,6-dihydro-[1,4]-thiazin-2-one oxime.
Aufarbeitung
- customcannot be isolated
- customOur attempts to prepare this compound
Quellen und Nachweise
- ORD-Eintrag
- ord-d4c2628f636343c0950d985ab13926c3
- Quelldatensatz
- uspto-grants-2000_05
- Patentnummer
- US06069256
Verknüpfte Notizen
Wird geladen…