H CO,H COHN- PQQ HOC N O 乙酸菌醇脱水酶辅酶,V2发现后 经55年得以确定的新VB Nature 2003 4 25
N N O O CO2H CO2H HO2C H PQQ 乙酸菌醇脱水酶辅酶，VB12发现后 经55年得以确定的新VB Nature 2003 4 25
9. 1. Kinds of carbonyl Compounds 9.2 Structure and Properties of Carbonyl Groups O δ+ RH RR
9.1.Kinds of Carbonyl Compounds 9.2 Structure and Properties of Carbonyl Groups R R' O R H O d + d - d - d +
9.3 Naming aldehydes and Ketones Aldehydes are named by replacing the terminal -e of the corresponding alkane name with -al The parent chain must contain the -CHO group, the--CHO carbon is numbered as c(1) If the-CHO group is attached to a ring, use the suffix for common names
9.3 Naming Aldehydes and Ketones • Aldehydes are named by replacing the terminal -e of the corresponding alkane name with –al • The parent chain must contain the ¾CHO group, the ¾CHO carbon is numbered as C(1) • If the ¾CHO group is attached to a ring, use the suffix for common names
Naming Ketones Replace the terminal -e of the alkane name with -one Parent chain is the longest one that contains the ketone group Numbering begins at the end nearer the carbonyl carbon
Naming Ketones • Replace the terminal -e of the alkane name with –one • Parent chain is the longest one that contains the ketone group –Numbering begins at the end nearer the carbonyl carbon
CH CHaCH CH.CHOCH CH..CHCH HOCH Ethanal Propanal 2-Ethyl-4-methylpentanal (Acetaldehyde) (Propionaldehyde) CH,,CCH,CH,CHs CH, CH= CCHs 6354321 CH3CH2CCHCCH3 345 Hexanone 4-Hexen-2-one 2.4-Hexanedione ②2004 Thomso