3.1 Carboxylic Acids, Sulfonic Acids, etc. and their Derivatives
113
o
II 8
1
H2N - C - CH 2 - (CH 2 )6 - COOH 8-Aminocarbonyloctanoic acid
CH2COI
3-(Iodocarbonylmethyl)7
31
2
1
Br - OC- CH2- CH 2 - CH 2 - CH- CH 2 - COBr heptanedioyl dibromide
In the meantime Chern. Abstr. has adopted a completely systematic treatment also for side chains, which, in the above example, leads to 3-(2-iodo2-oxoethyl) ... for the substituent group.
COOH
5
4
21
1
H3C - CH- CH2- CH- CH2- COOH Pentane-l ,2,4-tricarboxylic acid
I
COOH
COCI
I
(,'~yCOOH
U
COCI
1-( Chlorcarbonyl)- resp. 1-( Chloroxomethyl)pyrrole2-carboxylic acid
COCI
Biphenyl-2,6,3' ,5' -tetracarbonyl tetrachloride
COCI
COCI
,N- NH2
H03Svy~6 C~
3
I
OH
:::-..
~
N
3-Sulfoquinoline-6-carbohydrazoic acid
Cyclopent-3-enecarbohydroximic acid
CA: N-Hydroxycyclopent-3-enecarboximidic
acid
5- [Hydroxy(imino )sulfinyll-1H-pyrrole2-carboximidic acid