Carboxylic Aryl Research Articles

ChemInform Abstract: NEW RING OPENING REACTIONS OF OXIRANES WITH ARYL CARBOXYLATES

AbstractDie Reaktion der Oxirane (Ia), (Ib) mit den Arylestern (II) in Gegenwart von verschiedenen Basen liefert ausschließlich die β‐Spaltungsprodukte (III), während aus den Oxiranen (Ic) außer den (III)‐Analogen (IV) als Nebenprodukte auch die α‐Spaltungsprodukte (V) entstehen.

New Ring Opening Reactions of Oxiranes with Aryl Carboxylates

Abstract Oxiranes reacted with aryl esters in the presence of base. The reactions of aryl carboxylates with alkyloxiranes afforded almost exclusively 1-alkyl-2-(aryloxy) ethyl carboxylates, whereas the reactions with aryloxiranes gave a mixture of 1-aryl-2-(aryloxy) ethyl carboxylates and 2-aryl-2-(aryloxy) ethyl carboxylates. Similar results were also obtained in the reaction with S-aryl thiocarboxylates and diaryl carbonates. The rate of reaction between phenyl acetate and phenoxymethyloxirane (PMO) in the presence of tributylamine (n-Bu3N) as a catalyst has been determined in the temperature range 110 to 130 °C and may be expressed by –d[PMO]⁄dt=k2[n-Bu3N]·[PMO]. The apparent activation energy calculated from the Arrhenius plots is 85.8 kj/mol. The reaction catalyzed by tributylamine is assumed to proceed through zwitter ions, n-Bu3\overset+NCH2CH(R)O− and n-Bu3\overset+NCH(R)CH2O−, which attack aryl carboxylate.

ChemInform Abstract: COMPLEXES OF COPPER(II) ARYL CARBOXYLATES WITH 2,6‐LUTIDINE

AbstractOrtho‐ und metasubstituierte Cu(II)‐arylcarboxylate reagieren mit 2,6‐Lutidin in siedendem Aceton zu den tetragonal‐verzerrten oktaedrischen Cu(II)‐Komplexen (I).

Complexes of Copper (II) Aryl Carboxylates with 2, 6‐Lutidine

AbstractCopper (II) aryl carboxylates are known to form co‐ordination complexes with various oxygen and nitrogen donors such as pyridine‐N‐oxide1), quinoline and isoquinoline2) diethylamine and dipropylamine1). There is no reference in literature regarding the preparation of complexes of copper (II) aryl carboxylates with 2,6‐lutidine. The present communication describes the preparation of complexes of various copper (II) aryl carboxylates with 2,6‐lutidine in acetone or ethylacetate medium.

ChemInform Abstract: PREPARATION OF COMPLEXES OF COPPER(II) ARYL CARBOXYLATES WITH DIETHYL AMINE AND DIPROPYL AMINE

Copper aryl carboxylates are known to form co-ordination complexes with various nitrogen donors1-4). Except copper (II) benzoate5) complexes of other copper (II) aryl carboxylates with secondary amines such as diethyl amine and dipropyl amine are not known. The present communication deals with the preparation of complexes of various copper (II) aryl carboxylates with diethyl amine and dipropyl amine.

Preparation of Complexes of Copper(II) Aryl Carboxylates with Diethyl Amine and Dipropyl Amine

AbstractCopper aryl carboxylates are known to form co‐ordination complexes with various nitrogen donors1‐4). Except copper (II) benzoate5) complexes of other copper (II) aryl carboxylates with secondary amines such as diethyl amine and dipropyl amine are not known. The present communication deals with the preparation of complexes of various copper (II) aryl carboxylates with diethyl amine and dipropyl amine.

Complexes of Substituted Aryl Carboxylates of Copper(II) with Quinoline and Isoquinoline

Complexes of Substituted Aryl Carboxylates of Copper(II) with Quinoline and Isoquinoline