ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Hydroxylamine Derivatives, IL. Preparation and Cyclization of Substituted 1- and 2-HydroxyguanidinesAddition of substituted hydroxylamines to carbodiimides yields substituted 2- or 1-hydroxy-guanidines (1 or 4). In some cases C-(aminooxy)formamidines (7) and an alkoxybiguanide (9) are obtained. 1 and 4 react with chloroformic acid esters to give substituted 3-amino-δ2-1.2.4-oxadiazolin-5-ones (2) and 3-imino-1.2.4-oxadiazolidin-5-ones (5), respectively. Reaction of 1 and 4 with carbonimidoyl dichlorides leads to derivatives of 3-amino-5-imino-δ2-1.2.4-oxadiazoline (3) and of 3.5-diimino-1.2.4-oxadiazolidine (6), respectively.
Notes:
Die Addition von (subst.) Hydroxylaminen an Carbodiimide führt zu Derivaten des 2- bzw. 1-Hydroxy-guanidins (1 bzw. 4); in einigen Fällen entstanden C-Aminooxy-formamidine (7) sowie ein Alkoxy-biguanid (9), 1 und 4 wurden mit Chlorameisensäureestern in subst. 3-Amino-δ2-1.2.4-oxadiazolinone-(5) (2) bzw. 3-Imino-1.2.4-oxadiazolidinone-(5) (5) und mit Isocyaniddichloriden in die entsprechenden 3-Amino-5-imino- bzw. 3.5-Diimino-Derivate (3 bzw. 6) übergeführt.
Additional Material:
2 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19721050527
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