1720 



1720 



AZO COMPOUXDS WITH FOUR 

 XITROGEX ATOMS. 



AZO COMPOUNDS C14HUN4 



Ethane-bis-azobenzene 



CH3.CH(N2Ph)3 



XlTROETHANE BI.S-AZ0-0,Cl,2>-TRICnL0I!(l- 

 BENZENE 



CE, . CtXO^) : [Nj . CeHjCla], 



and the corresponding trihromo 

 derivative. 



Bamberger, Eug[en] und Frei, 

 Johannes. Berlin, Ber. D. chem. dps., 

 36, 1903, (.3833-3835). 



Metliylformazyl 



CH3 . C(X2Ph) : NJiPh 



Bamberger, E. nnd Pemsel, W. Ber- 

 lin, Ber. D. chem. Ges., 36, 1903, (S.') - 

 89). 



AZO COMPOUND CigHhNj 



Benzene-azo-phenyl-methyl- 

 pyrazole. 



Micbaelis, A. nnd Leonbardt, 1! 

 Berlin, Ber. D. cliem. Ges., 36, 190.' 

 (3597-3599). 



Glil.OROrHEN iLTOLYLFOUM.VZYL CAHIiOXYLIi ' 

 ACID 



C,5H,302N4C1 i.e. 

 CsH.Cl.NH.N^^ Q„ 

 CeH^Me . N : N ^"^ ' ^^^"■ 



Menthyl ester. 

 Lapwortb, Arthur. [Menthyl p-chloro- 

 ])henyl-p'-]nethyIphenylforniazvlcarboxv- 

 late.] London, J. Chein. Soc.,' 83, 1903, 

 (1120); [Abstract] Proc. Chem. Soc, 19, 

 1903, (149). 



AZO COMPOUND Ci.:Hi;0N4 



Benzene azo-plienylmethyl 

 pyrazolone 



,C(OH) . XPh 



^CMe : N 

 Eibner, A. Beilin, Ber. D. chem. 

 Ges., 36, 1903,(2687-2092). 



Ph . X2 . C<^ 



AZO COMPOUND C,6H,602N4 



Ditolylformazyl carboxylic acid 



CeH.Me.XH.N. ., .,q jj 



C^H.Me . X : N >*- " ^^'^^ 



Meiillitjl csler. 



Lapwortb, Arthur. [Menthyl pi/- 



d i m e t h V 1 p h e nylfonna z vlcarboxvlate.] 



London, J. Chem. Soc. 83" 1903, (1125- 



1126); [Abstract] Proc. Chem. Soc, 19, 



1903, (1 -191: 



AZO COMPOUXDS COXTAIXIXC 

 FOUE ATOMS OF XFTROGEX 

 AXD OXYGEN. 



AZO COMPOUND C15H14O2N4 



Phenyltolylformazyl carboxylic acid 



BuOMOrHENVLTOLYLFORMAZYL CARBOXYLIC 

 ACID 



Ci5Hi302N4Br i.e. 



CVH^Me.NiN ^'-•^^2tl 



Menthyl ester. 



Lapwortb, Arthur. [Menthyl p-bromo- 

 phenyl-p'-methylphenvlformazvlcarboxv- 

 k:e.]" London, J. Chem. Soc," 83, 1903, 

 (1126); [Abstract] Proc. Chem. Soc, 

 19, 1903, (149). 



AZO COMPOUND C17H14ON4 



Pyrrole-azo-benzene-phenyl- 

 carbamide 



C4Nn3 : N . NPh . CO . NHPh 



Plancber, G. e Soncini, E. Gazz. 

 chim. ital., Pahnero, 32, parte 11, 1902, 

 (447-400'. 



AZO COMPOUND Ci8H,40N4 



Phenol-bis-azobenzene 



HO . C6H3(N2Ph)2 



Benzene-azo-phesol-azo-bromobekzene 



Ci8Hi30X4Br i.e. 



HO . C6H3(X2 . Ph)(X2 . CeH^Br) [1:3:4] 



Jacobson, P[aul] und Hbnigsberger, 

 F. Berlin, Ber. D. chem. Ges., 36, 

 1903, (4093-4123). 



