51172-60-2

Upstream product

• 115601-14-4 4-Chlorphenylacetylazid 
• 6132-45-2 ethyl 4-nitrophenyl carbonate 
• 104-86-9 4-chlorobenzylamine 
• 22719-86-4 1-(4-ethoxycarbonyloxy-phenyl)-ethanone 
• 22719-89-7 ethyl m-nitrophenyl carbonate 
• 78725-90-3 S-phenyl-O-ethyl thiolcarbonate 
• 107701-35-9 O-ethyl S-(4-chlorophenyl) thiocarbonate 
• 78725-88-9 O-ethyl S-(4-methylphenyl) thiocarbonate 
• 263746-53-8 O-ethyl-S-(4-bromophenyl)thiocarbonate 
• 14062-24-9 4-chloro-benzeneacetic acid, ethyl ester 
• 64-17-5 ethanol 
• 1878-66-6 4-chlorophenylacetic Acid 
• 6951-40-2 2-((4-chlorobenzyl)amino)-2-oxoacetic acid 
• 124-38-9 carbon dioxide 

Downstream Products

• 42365-43-5 (4-chlorophenyl)methanamine hydrochloride 
• 51172-61-3 N-p-Chlorbenzyl-N-cyanoacetylcarbaminsaeureaethylester 
• 51172-62-4 N-(p-Chlorbenzyl)-N-(α-cyano-β-aethoxyacryloyl)-carbaminsaeureaethylester 
• 444901-25-1 ethyl 4-chlorobenzyl[2,4-dinitro-6-(trifluoromethyl)phenyl]carbamate 

Relevant academic research and scientific papers

Urethanes synthesis from oxamic acids under electrochemical conditions

Urethane synthesis via oxidative decarboxylation of oxamic acids under mild electrochemical conditions is reported. This simple phosgene-free route to urethanes involves an in situ generation of isocyanates by anodic oxidation of oxamic acids in an alcoholic medium. The reaction is applicable to a wide range of oxamic acids, including chiral ones, and alcohols furnishing the desired urethanes in a one-pot process without the use of a chemical oxidant.

Application of Ag/TFPG-DMB COF in carbamates synthesis via CO2 fixation reaction and one-pot reductive N-formylation of nitroarenes under sunlight

We have designed mesoporous AgNPs decorated COF (Ag/TFPG-DMB COF) nanomaterial which has been formed by an easy ex-situ synthetic method. The synthesized material is characterized by FTIR, PXRD, UV–vis, N2 adsorption–desorption studies, TEM, FESEM and XPS. The material showed the generation of identical mesopore at 3.9 nm. It is observed that the material can perform as both thermally and photochemically active catalyst for carbamate synthesis and one-pot reduction and N-formylation of nitroarenes respectively. The catalytic activity of the Ag/ TFPG-DMB COF nanomaterial is checked for green synthesis of carbamates from different amines and alcohols under 1 atmospheric pressure of CO2 with excellent yield (upto 95 %) as well as with high TOF value (182 h?1) and high selectivity. Additionally, the Ag/ TFPG-DMB COF nanomaterial is also applied as a potentially active photocatalyst for one-pot nitroarene reduction along with N-formylation reaction under sunlight irradiation in green reaction conditions with exceptionally high yield of formylated products upto 99 % as well as with high TOF value (762 h ?1). The catalyst efficiently reduced and formylated para-nitrophenol, a potential water pollutant, which elaborates its scope as an efficient catalyst for water purification also. The catalyst recyclability is also checked for five reaction cycles for both the reactions and the Ag/TFPG-DMB COF material showed outstanding recycling ability without any noticeable leaching of active metal or catalyst degradation.

An efficient one-pot synthesis of: N, N ′-disubstituted ureas and carbamates from N -acylbenzotriazoles

A facile and high-yielding one-pot synthesis of carbamates and N,N′-disubstituted symmetrical ureas from N-acylbenzotriazoles has been devised. It is believed that, the intermediate acyl-azide undergo Curtius rearrangement and in different solvents gives different products i.e. carbamates in alcohols and N,N′-disubstituted symmetrical urea in THF.

BENZIMIDAZOLIDINONE DERIVATIVES

The present invention can provide novel compounds useful as orally administrable growth hormone releaser, more specifically a benzimidazolidinone derivative of formula (1) or a pharmaceutically acceptable salt thereof:(1) wherein R1 is optional

Kinetics and mechanism of the aminolysis of O-ethyl S-aryl thiocarbonates in acetonitrile

The Kinetics and mechanism of the reactions of O-ethyl S-(Z)aryl thiocarbonates with (X)benzylamines in acetonitrile at 45.0 °C are studied. Relatively small values of βx (βnuc) = 0.6 to approximately 0.8 and βz (βlg) = -0.5 to approximately -0.7 together with a negative cross-interaction constant ρxz (= -0.47) and failure of the reactivity-selectivity principle (RSP) are interpreted to indicate a concerted mechanism. The normal kinetic isotope effects (kH/kD = 1.3 to approximately 1.8) involving deuterated benzylamine nucleophiles suggest a hydrogen-bonded, four-center-type transition state.

Kinetics and mechanism of the aminolysis of ethyl aryl carbonates in acetonitrile

The aminolysis reactions of ethyl aryl carbonates with benzylamines in acetonitrile at 25.0°C are investigated. The base-catalyzed path, k2, disappears when strong nucleophiles (X = p-CH3O and p-CH3) react with a substrate activated by a strong nucleofuge (Z = p-NO2). The large magnitude of ρ(x) (-1.7 to -2.5), ρ(z) (3.4 to 4.3), and ρ(xz) (1.4) values, and relatively large k(H)/k(D) (1.6 to 1.8) found for the uncatalyzed path (k1) can be accounted for in terms of a stepwise mechanism with rate-limiting expulsion of the phenoxide leaving group. The catalyzed process (k2) is characterized by the much smaller magnitude of ρ(x) (-1.0 to -1.7), ρ(z) (0.4 to 0.7), and ρ(xz) (0.2), the larger k(H)/k(D) (2.1 to 2.5) values, and the lower ΔH(+) values (1.8-1.9 kcal mol-1) than those of the uncatalyzed process (k1) with large negative ΔS(+) values (-65 to -67 cal K-1 mol- 1). These results are consistent with four- and six-centered transition states for the two processes, k1 and k2, respectively.