Hanna Piotrowska

Palladium catalyzed C-allylation of nitroalkanes

Abstract A detailed study of palladium catalyzed C-allylation of aliphatic nitro compounds is described. Allylic alcohols and/or their acetates and allyl phenyl ethers were employed as allylating agents. The dependence of the reaction yield on nature and quantity of base and structure of the allylic unit is reported and explained. The lowest yield was obtained for allyl alcohol; however it could be considerably increased by addition of a stoichiometric amount of ethyl acetate. Order of reactivity of functions groups was OPh > OAc > OH. A novel method of synthesis of tetrakis (triphenylphosphine) palladium is also reported.

Palladium catalyzed allylation of nitroalkanes with allyl chlorides

The palladium catalyzed synthesis of allylnitro compounds from allyl chlorides and nitroalkanes is described.ZusammenfassungDie Palladium-katalysierte Darstellung von Allylverbindungen aus Allylchloriden und Nitroalkanen wird beschrieben.

Aliphatic nitro-compounds—LIII : Nitro derivatives of dioxaboracyclohexane☆☆☆

Abstract A series of new derivatives of 2-phenyl-5-nitro-1,3-dioxa-2-boracyclohexane have been prepared. The properties and I.R. spectra of these compounds are compared with 1,3-dioxane derivatives.

The ring-chain equilibrium in derivatives of 5-nitro-1, 2, 3, 4-tetrahydropyrimidine in trifluoroacetic acid

Abstract 1H NMR spectra of derivatives of 5-nitro-1,2,3,4-tetrahydropyrimidine were examined in trifluoroacetic acid solution. It was found that the compounds, unsubstituted in position 2, preserve their ring structure, whereas 2-alkyl- and 2-aryl derivatives are subjected to ring opening.

CHEMIE DER NITROPARAFFINE 107. MITT. RK. VON 3-NITRO-CYCLOALKENEN MIT DIAZONIUMSALZEN

Die Nitrocycloalkene (I) reagieren als aci-Salze mit dem Diazoniumchlorid (II) zu den Phenylhydrazonen (III), die bei der Hydrolyse in die Ketone (IV) ubergehen.

RK. VON NITROPARAFFINEN 97. MITT. NEUE BESONDERHEITEN DER RK. VON 2,2-DINITRO-PROPANDIOL-(1,3) MIT PRIM. AMINEN

Das Diol (I) reagiert mit den Hydrochloriden der Amine (II) in Gegenwart von Na-acetat (molares Verhaltnis 1 : 2 : 2) in acetatgepufferter Losung (pH 4) bei Raumtemperatur unter Bildung der Athylamine (III) (Ausbeuten 22 bis 46%).