40424-21-3

Upstream product

• 75-44-5 phosgene 
• 111-74-0 N,N'-diethylethylenediamine 
• 120-93-4 imidazolidone 
• 75-03-6 ethyl iodide 
• 96-45-7 N,N'-ethylenethiourea 
• 7320-60-7 2-(ethylthio)-4,5-dihydro-1H-imidazole 
• 201230-82-2 carbon monoxide 
• 74-85-1 ethene 
• 100-36-7 N,N-diethylethylenediamine 

Relevant academic research and scientific papers

1H and 13C NMR study on some substituted azolidine derivatives

The 1H and 13C NMR spectra carried out on (where for R = H, X = NH, NMe, NEt, CH2, S, O; for R = Me, X = NMe, CH2; for R = Et, X = NEt) are reported.The comparison of these results with those obtained for the thionic and selonic isologues shows that sulphur and selenium have a greater deshielding effect on the ring than oxygen.The resonance of the carbons not involved in the ? system have been correlated with the ? charges calculated by the DEL RE method.

OLIGONUCLEOTIDE COMPOSITIONS AND METHODS THEREOF

The present disclosure provides modified oligonucleotides and compositions and methods thereof. In some embodiments, provided technologies comprise modified sugars and/or modified internucleotidic linkages. In some embodiments, the present disclosure provides technologies for preparing modified oligonucleotides. In some embodiments, the present disclosure provides chirally controlled oligonucleotide compositions and methods for their preparation and uses.

Efficient solvent-free synthesis of urea derivatives using selenium-catalyzed carbonylation of amines with carbon monoxide and oxygen

In the presence of a catalytic amount of selenium under ambient pressure of carbon monoxide with oxygen, solvent-free facile synthesis of urea derivatives was developed; the aim is for green and sustainable chemistry. For example, N,N-dimethylethylenediamine (20 mmol) successfully afforded 1,3- dimethylimidazolidin-2-one (DMI) in 74% yield (1487% based on Se) using selenium catalyst (5 mol%) under mixed gas (CO/O2, 2:1) at 0.1 MPa, 20 C without any additive or solvent

Novel synthesis of N, n′-dialkyl cyclic ureas using sulfur-assisted carbonylation and oxidation

The first example of cyclic urea synthesis from secondary amines by the use of sulfur-assisted carbonylation and oxidation was established. By combined sulfur-assisted carbonylation of secondary a, ay diamines under an ambient pressure of carbon monoxide

Semi-quantitative approaches to the coordination ability of o-bisguanidinobenzenes with metal salts

In order to uncover the potential functionality of o-bisguanidinobenzenes the ability of 1,2-bis(1,3-diethylethyleneguanidino)benzene to form complexes with eighteen kinds of metal salts in aqueous media was examined. Complex formation ability was judged

Catalytic oxidative carbonylation of primary and secondary α,ω-diamines to cyclic ureas

(matrix presented) Primary and secondary diamines can be catalytically carbonylated to cyclic ureas using W(CO)6 as the catalyst, I2 as the oxidant, and CO as the carbonyl source. Preparation of five-, six-, and seven-membered cyclic ureas from the diamines RNHCH2(CH2)nCH2NHR (n = 0-2; R = H, Me) and RNHCH2CH2NHR (R = Et, i-Pr, Bz) was achieved in moderate to good yields.

Process for producing 1,3-dialkyl-2-imidazolidinone

A novel bis-urea compound, preparation process of the compound, and preparation process of 1,3-dialkyl-2-imidazolidinone are disclosed and the disclosure provides a novel preparation process of 1,3-dialkyl-2-imidazolidinone and simultaneously enables effective utilization of N,N',N"-trialkyldiethylentriamine which lacks a large amount use and is desired to develop new application.

Reduction of Cyclic Ureas with Lithium Aluminum Hydride

A series of 1,3-dialkyl-2-imidazolidinones 1 and 1,3-dialklyltetrahydro -2(1H)-pyrimidinones 2 were reduced to the corresponding aminals 3 and 4, respectively, when treated with excess lithium aluminum hydride in ether.The rate of reduction is affected dr

MACROHETEROCYCLES. XV. SYNTHESIS AND ION-SELECTIVE CHARACTERISTICS OF CYCLIC N,N'-DIALKYLUREAS

A convenient method is proposed for the production of cyclic N,N'-dialkylureas by the reaction of cyclic thioureas with alkyl halides in the presence of aqueous alkali and phase-transfer catalysts.It was established that the reaction takes place through the formation of isothioureas with subsequent alkylation of the nitrogen atoms and hydrolytic cleavage of the obtained N,N'-dialkylthiouronium salt.This method was used for the synthesis of macrocyclic N,N'-dimethylpolyoxyethyleneureas.The ion-selective characteristics of the obtained crown compounds were studied.