93734-90-8

Upstream product

• 201230-82-2 carbon monoxide 
• 7409-30-5 p-nitrobenzylamine 
• 5070-13-3 bis-(p-nitrophenyl) carbonate 
• 18600-42-5 4-nitrobenzylamine hydrochloride 
• 17271-88-4 p-nitrobenzyl azide 
• 102-09-0 bis(phenyl) carbonate 
• 530-62-1 1,1'-carbonyldiimidazole 
• 6144-81-6 4-nitrophenylacetic acid hydrazide 
• 2945-08-6 methyl (4-nitrophenyl)acetate 
• 101092-83-5 N,N'-bis-(4-nitro-benzyl)-thiourea 
• 6144-82-7 (4-nitro-phenyl)-acetyl azide 
• 75-44-5 phosgene 

Downstream Products

• 18600-42-5 4-nitrobenzylamine hydrochloride 

Relevant academic research and scientific papers

Bambusurils Bearing Nitro Groups and Their Further Modifications

Bambusurils are recently developed neutral anion receptors that show a high affinity towards many inorganic anions, not only in organic solvents but also in water. However, the number of water-soluble bambusurils and also those bearing functional groups is very limited. In this paper we report the synthesis of four- and six-membered bambusurils containing eight and twelve nitro groups. All the nitro groups on the bambusuril portals could be transformed into amino functions, which provided the macrocycles with water solubility and allowed their further modification. For example, we have demonstrated the conversion of amino groups on the bambusurils into the corresponding urea-functionalized bambusuril derivatives. We also report the first example of a bambusuril bearing only two functional groups, which was prepared by the condensation of two different glycolurils.

LIQUID CRYSTAL ALIGNING AGENT

Provided is a liquid crystal aligning agent capable of forming a liquid crystal alignment film the surface of which is rarely scratched or abraded when rubbed, and which exhibits excellent liquid crystal aligning properties and enables the production of l

NaIO4-oxidized carbonylation of amines to ureas

Oxidative carbonylation of amines using NaIO4 as the oxidant and NaI as a promoter affords good to excellent yields of ureas from primary amines in the absence of transition metal catalysts. The Royal Society of Chemistry 2009.

W(CO)6-catalyzed oxidative carbonylation of primary amines to n,n'-disubstituted ureas in single or biphasic solvent systems. Optimization and functional group compatibility studies

Primary amines undergo carbonylation to N,N'-disubstituted ureas using W(CO)6 as the catalyst, I2 as the oxidant, and CO as the carbonyl source. Preparation of various N,N'-disubstituted ureas from aliphatic primary amines, RNH2 (R = n-Pr, n-Bu, i-Pr, sec-Bu, or t-Bu), was achieved in good to excellent yields. Studies of functional group compatibility using a series of substituted benzylamines demonstrated broad tolerance of functionality during the carbonylation reaction. Preparation of various N,N'-disubstituted ureas from substituted benzylamines, R-C6H4CH2NH2 (R = H, p-OCH3, p-CO2H, p-CO2Et, p-CH2OH, p-SCH3, p-vinyl, p-Cl, p-Br, m-I, p-NH2, p-NO2, or p-CN), was achieved in good yields. For many substituted benzylamines, yields of ureas were higher when a two-phase CH2Cl2/H2O solvent system was used.