160 likes | 285 Vues
Aldehydes (p. 33). Organic compounds that have a carbonyl group (C=O) attached to the beginning (1 st Carbon) or end (last Carbon) of a parent carbon chain. General form: O O R-C-H H-C-R Naming: Drop the “e” from the alkane name and add “al”. Example.
E N D
Aldehydes (p. 33) • Organic compounds that have a carbonyl group (C=O) attached to the beginning (1st Carbon) or end (last Carbon) of a parent carbon chain. • General form: O O R-C-H H-C-R • Naming: • Drop the “e” from the alkane name and add “al”
Example O C-C-H Ethane Ethanal
Name: O C O C-C-C-C 2-methyl-1,4-butanedial (you are supposed to keep the “e”)
Ketones • Organic compounds in which the carbonyl group is attached to carbons within the parent carbon chain (not at the beginning or end). • General form: O R-C-R’ • Naming: • Drop the “e” from the alkane name and add “one”. • Give the position # for the carbonyl.
Example: O C-C-C 2-propanone
Example: CO O C-C-C-C-C-C 5-methyl-2,3-hexanedione
Carboxylic Acids (p. 34) • Carboxyl group: O or O C-OH HO-C • Organic compounds that contain a carboxyl functional group. • Can only be on the ends.
Carboxylic Acids (p. 44) O • General formula: R-C-OH • Naming: • If one carboxyl group • Drop the “e” from the alkane name and add “-oic acid”. (No number needed for the carboxyl group)
Example: O C-C-C-C-C-C-OH hexanoic acid
Example: CO C-C-C-C-C-C-OH 5-methyl hexanoic acid
If more that one carboxyl group. • One on each end of the parent chain. • -dioic acid.
Example: OO HO-C-C-C-C-OH 1,4-butanedioic acid
Example: OC-C O HO-C-C-C-C-C-C-OH 2-ethyl-1,6-hexanedioic acid
Draw:4-ethyl-5-methyl-4-propyl octanedial C O C CO C-C-C-C-C-C-C-C C-C-C
Draw:6-chloro-4,4-dimethyl-2,3-hexanedione O O C Cl C-C-C-C-C-C C
Draw:4-bromo-2-ethyl-4-iodopentanoic acid Br O C-C-C-C-C-OH I C C