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Compounds Containing a N-CO-N-N or More Complex Group

Rule C-982

982.1 - Derivatives of the types NH2-CO-NH-N=CHR and NH2-CO-NH-N=CR1R2 are named as follows: (a) by adding the word "semicarbazone" after the name of the aldehyde RCHO or ketone ; (b), if another substituent having priority for citation as principal group is also present, by use of the prefix "semicarbazono-" for the radical NH2-CO-NH-N=; or (c) as a semicarbazide derivative with the prefix denoting the bivalent radical =CHR or (alkylidene, etc.). Other substituents on nitrogen are indicated by prefixes and numerical locants.

Examples to Rule C-982.1

(a) Benzophenone 4,4-diphenylsemicarbazone

(b) 4-Semicarbazono-1-cyclohexanecarboxylic acid

(c) 1-Isopropylidene-2,4-dimethylsemicarbazide

982.2 - Derivatives of semicarbazide, carbonohydrazide, carbazone, and carbodiazone are named as substitution products of these compounds except as provided by Rules C-981.2, and C-982.1.

Examples to Rule C-982.2

1,5-Diphenylcarbonohydrazide

1-Ethylidene-5-(2-naphthyl)carbonohydrazide

See Recommendations'93 Table 31(a)

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Compounds Containing a N-CO-N-N or More Complex Group C-983, C-984, C-985

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This HTML reproduction of Sections A, B and C of IUPAC "Blue Book" is as close as possible to the published version [see Nomenclature of Organic Chemistry, Sections A, B, C, D, E, F, and H, Pergamon Press, Oxford, 1979. Copyright 1979 IUPAC.] If you need to cite these rules please quote this reference as their source.

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