-(C=O)-O- name?

first, >C=O is NOT aldehyde group.

R-C(=O)-H is a kind of compounds called aldehyde (alkanal);
R-C(=O)-R' is a kind of compounds called ketone (alkanone);

the functional group -C(=O)- is the carbonyl group.


is -COO- really "oxycarbonyl"? this may be misleading, as it does not behave like what carbonyl does.
well, that's just an ester group, coming from ester.

"ester" can be a kind of compound, having structure of R-C(=O)-O-R'
where R is H or alkyl, R' is alkyl (but not H).
"ester" can also be that characteristic functional group, -C(=O)-O- .


2011-06-02 22:11:34 補充：
剛查了一下, 發覺R-oxycarbonyl 這樣的叫法也是有的,
例如
CH3-O-C(=O)-CH2CH2CH2- , 就叫ethyloxycarbonylpropyl- ,
CH3-C(=O)-O-CH2CH2CH2- , 就叫ethylcarbonyloxypropyl- 的樣子.

不過, 這只是在命名某大型分子時, 指明side-chain 所用的prefix 前綴;
若只是指那個functional group, 則仍以ester 為宜.

It is named as R-oxycarbonyl group, where R represents an alkyl group