Phosphorylated derivatives of salicylaldehyde azomethines

© 2016 Taylor & Francis Group, LLC.New phosphorylated azomethines on the basis of salicylaldehyde were obtained. These compounds react with P(Y) chlorides to form diphosphorylated azomethines

The reactivity of 1, 3, 2-diheterophospholans containing a tricoordinate phosphorus atom

The results of studies on the reactivity of 1, 3, 2-di-heterophosphacycloalkanes containing a tricoordinate phosphorus atom carried out in recent years are examined and surveyed. Much attention has been devoted to reactions leading to an increase of the coordination number of the ring phosphorus atom and also to exocyclic and endocyclic substitution reactions. The mechanisms and certain stereochemical characteristics of the reactions of cyclic phosphorus compounds are discussed. In a few instances the reactivities have been estimated quantitatively. © 1983 The British Library

Reactions of pyridoxal with aromatic carboxylic acids in alcoholic medium

© 2017, Pleiades Publishing, Ltd. Reactions of pyridoxal with benzoic acid and its derivatives in alcoholic medium afforded alkoxyfuropyridinium salts with potential biological activity

Pyridoxal reactions with amines and aliphatic diamines

© 2016, Pleiades Publishing, Ltd.Interaction of pyridoxal (3-hydroxy-5-hydroxymethyl-2-methylisonicotinaldehyde) with amines, mono- and disubstituted diamines led to the formation of compounds having in their structure imine, imidazolidine, and pyrimidine moieties. Structure of the obtained compounds was proved by IR data, 1H NMR spectroscopy, mass spectrometry, and X-ray diffraction analysis

New method for the synthesis of phosphonic and phosphinic esters and their thio analogs Communication 13. Addition of O,O-diethyl hydrogen phosphorothidite to ketones and aldehydes

1. It has been shown that O,O-diethyl hydrogen phosphorothioitein presence of sodium ethoxide reacts readily at the double bond of unsaturated ketones with formation of keto phosphonothionic esters. It adds to saturated ketones at, the carbonyl group with formation of α -hydroxy phosphonothionic esters. 2. O,O-Diethyl hydrogen phosphorothiotte -adds at the carbonyl group of unsaturated and saturated aldehydes with formation, respectively, of unsaturated and saturated α-hydroxy phosphonothionic esters. 3. A method .has been developed for the synthesis of keto phosphonothionic esters and of unsaturated and saturated α-hydroxy phosphonothionic esters. © 1953 Consultants Bureau

Organophosphorus compounds with an active methylene group

The review deals with the present state of the chemistry of organophosphorus compounds with an active methylene group: esters and nitriles of phosphonoacetic acids, phosphonoacetone, and other compounds in which the methylene group is linked directly to the P=O and any other electronegative group. Compounds of this type are analogues of acetoacetic, malonic, cyanoacetic, and phenylacetic esters, the importance of which for theoretical and synthetic organic chemistry is well known. The methods for the synthesis of phosphorus-containing compounds with an active methylene group are considered in the first part of the review, while their chemical properties associated with the mobility of the hydrogen atoms of the methylene group (alkylation, addition, condensation, P(O)-activated olefin formation, and certain other reactions) are dealt with in the second part. © IOP Publishing Ltd

New method for the synthesis of phosphonic and phosphinic esters and their thio analogs Communication 14. New method for the synthesis of amino phosphonic esters

A new method has been developed for the synthesis of amino phosphonics acids. It consists in the addition.of dialkylphosphorous acids to anils in presence of alkali-metal alkoxides. © 1953 Consultants Bureau