C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/276
C07D 471/04 (2006.01)
Patent
CA 1290337
ABSTRACT OF THE DISCLOSURE .beta.-carbolines of formula 1 Image ( I ), wherein R = C1-5 alkyl, R4 = H, C1-5 alkyl or -(CH2)n-OR with n = 1 or 2 and RA = H, R, (CHR)n-OR, OCH2Ph, OPh, OPh(Cl,Br), OR, OCH2Ph(Cl,Br) NRR, Cl or Br, wherein n and R have the above meanings and there are one or two RA's are prepared, by dehydrogenation at reaction temperatures below ambient temperature in an inert solvent with tert-butyl hypochlorite and a tertiary amine.
500951
Borner Helmut
Haffer Gregor
Huth Andreas
Marks & Clerk
Schering Aktiengesellschaft
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