Month: April 2022

Formula: C9H13NO2. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Ethyl 3,5-Dimethyl-2-pyrrolecarboxylate, is researched, Molecular C9H13NO2, CAS is 2199-44-2, about Dithiocarboxylic acids of pyrroles. II. Friedel-Crafts reactions with carbon disulfide. Author is Treibs, Alfred; Friess, Raimund.

Reaction of 2,4-dimethyl-5-(ethoxycarbonyl)pyrrole (I) with AlCl3 in CS2 gave 10% 3-(dithiocarboxy) derivative (II) of I. The same reactions in the presence of ClCO2Et gave the Et ester of II. 2-Methyl-3-(ethoxycarbonyl)pyrrole-5-dithiocarboxylic acid was obtained in 10% yield from 2-methyl-3-(ethoxycarbonyl)pyrrole with AlCl3 and CS2. These reactions show CS2 was not an indifferent solvent in Friedel-Crafts reactions.

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Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 2-(7-Bromo-1H-indol-3-yl)acetic acid, is researched, Molecular C10H8BrNO2, CAS is 63352-97-6, about Growth of Avena coleoptiles and pH drop of protoplast suspensions induced by chlorinated indoleacetic acids.COA of Formula: C10H8BrNO2.

Several indoleacetic acids, substituted in the benzene ring, were compared in the Avena straight growth bioassay. 4-Chloroindoleacetic acid (I) [2519-61-1], a naturally occurring plant hormone, was one of the strongest hormones in this bioassay. With an optimum at 10-6 mol/L, it was more active than indoleacetic acid [87-51-4], 2,4-dichlorophenoxyacetic acid [94-75-7], and naphthaleneacetic acid [86-87-3]. 5-Chloro- [1912-45-4] and 6-chloroindoleacetic acid [1912-44-3] are very strong auxins as well. Other derivatives tested have a lower activity. 5,7-Dichloro- [1912-40-9] and 5-hydroxyindoleacetic acid [54-16-0] have very low auxin activity at 10-4 mol/L and may be antiauxins. Some of the derivatives were compared for their effect on pH decline in stem protoplast suspensions of Helianthus annuus and Pisum sativum. The change of pH occurs without a lag period or with only a very short one. Derivatives which are very active in the Avena straight growth assay cause a larger pH decline than indoleacetic acid, while inactive derivatives cause effectively no pH decline.

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Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Electronic effects in the ferrocene ring system by proton magnetic resonance spectroscopy, published in 1968, which mentions a compound: 1273-73-0, mainly applied to electronic effect ferrocene ring; ferrocene ring system PMR; ring system ferrocene PMR; PMR ferrocene ring system, Reference of Bromoferrocene.

Results of a proton magnetic resonance study of the chem. shifts of ring protons of representative monosubstituted ferrocene compounds are reported. The substituents cover a span from strongly electron-donating groups to strongly electron-withdrawing. Some relations appear to exist between the ring-proton chem. shifts in these compounds and those reported for the corresponding monosubstituted benzene compounds The chem. shifts recorded were precisely measured. As such, they serve to revise the data reported while this work was in progress. 15 references.

Compounds in my other articles are similar to this one(Bromoferrocene)Reference of Bromoferrocene, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.

Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Some reactions of halogen derivatives of ferrocene. Ferrocenylamine. Ferrocenyl acetate》. Authors are Nesmeyanov, A. N.; Sazonova, V. A.; Drozd, V. N..The article about the compound:Bromoferrocenecas:1273-73-0,SMILESS:Br[C-]12[Fe+2]3456789([C-]%10C6=C7C8=C9%10)C1=C3C4=C25).Safety of Bromoferrocene. Through the article, more information about this compound (cas:1273-73-0) is conveyed.

cf. C.A. 50, 2558a; 54, 6673h. Refluxing 0.3 g. bromoferrocene (I) with 1 g. Cu(OAc)2 in 30 ml. 50% EtOH 15 min. gave 90% ferrocenyl acetate, m. 64.5-6.5° (EtOH); hydrolysis and treatment with BzCl gave ferrocenyl benzoate, m. 108.5-9.5°. Ferrocenyl acetate was similarly prepared in 84% yield from chloroferrocene. Heating 0.6 g. I with 1.5 g. Cu phthalimide 2 hrs. at 135-40° gave after extraction with Et2O 64% N-ferrocenylphthalimide, m. 156-7° (EtOH); chloroferrocene gave a 53% yield. Refluxing the imide with N2H4.H2O in EtOH under N 40 min. gave after an aqueous treatment 82% ferrocenylamine, m. 153-5°, which with Ac2O in pyridine at room temperature gave 82% N-acetylferrocenylamine, m. 169-71°. Heating I with Cu(CN)2 2 hrs. at 140° gave 84% ferrocenecarbonitrile, m. 105.5-6.5°; the yield was 42% when the reaction was run 3 hrs. in pyridine with chloroferrocene and when a small amount of the nitrile was originally present in the reaction mixture

Compounds in my other articles are similar to this one(Bromoferrocene)Safety of Bromoferrocene, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.

Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

Formula: C10BrFe. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Ferrocene Aryl Derivatives for the Redox Tagging of Graphene Nanoplatelets. Author is Yang, Minjun; Batchelor-McAuley, Christopher; Moreira Goncalves, Luis; Lima, Carlos F. R. A. C.; Vyskocil, Vlastimil; Tschulik, Kristina; Compton, Richard G..

Aryl derivatives of ferrocene were used for the modification of graphitic surfaces. Stronger adsorption was used as a route to enable the electrochem. tagging of new C materials. Model experiments are reported on an EPPG electrode where the adsorption of 1-(biphen-4-yl)ferrocene is a factor of ∼5 times more thermodynamically favorable than the underivatised form. Two further derivatives were also studied and the voltammetric responses of this class of ferrocenes are significantly influenced by ion-pairing. Finally, the successful use of these new materials for the modification and redox tagging of graphene nanoplatelets is demonstrated.

Compounds in my other articles are similar to this one(Bromoferrocene)Formula: C10BrFe, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.

Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Ethyl 3,5-Dimethyl-2-pyrrolecarboxylate( cas:2199-44-2 ) is researched.Formula: C9H13NO2.Thompson, Alison; Gao, Susan; Modzelewska, Gosia; Hughes, David S.; Patrick, Brian; Dolphin, David published the article 《x-ray Crystallographic and 13C NMR Investigations of the Effects of Electron-Withdrawing Groups on a Series of Pyrroles》 about this compound( cas:2199-44-2 ) in Organic Letters. Keywords: crystallog carbon NMR electron withdrawing group pyrrole derivative. Let’s learn more about this compound (cas:2199-44-2).

Pyrroles substituted with various electron-withdrawing groups (EWGs) on the N atom were synthesized and full characterization including x-ray crystal structures obtained. Anal. of 13C chem. shifts and x-ray crystal structures reveals that a trend between decreased aromaticity and the strength of the EWG exists. Exptl. results regarding alternative mechanisms of nucleophilic substitution reactions can thus be rationalized.

Compounds in my other articles are similar to this one(Ethyl 3,5-Dimethyl-2-pyrrolecarboxylate)Formula: C9H13NO2, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.

Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

Electric Literature of C10BrFe. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Synthesis, structure and reactivity study of 1,1′-bis(N-tert-butyl-N-hydroxyamino)ferrocene.

The synthesis of 1,1′-bis(N-tert-butyl-N-hydroxyamino)ferrocene (1) is described, and the x-ray anal. showed eclipsed positions of the two tert-butylhydroxyamino groups. This structure can be explained by the interactions of the hydroxyl hydrogens with the N atoms of the other tert-butylhydroxyamino group. This interaction is maintained in solution and may explain that the oxidation of 1 using Ag2O gave a decomposition reaction instead of the expected 1,1′-bis(N-tert-butylaminoxy)ferrocene. The ESR spectrum of an oxidized solution of 1 showed a 1:1:1 triplet, but it corresponded only to traces of an N-O• radical. Cyclic voltammograms of 1 showed that it is more easily oxidized than ferrocene and less easily than 1,1′-diaminoferrocene, indicating that chem. oxidation of 1 occurs in the ferrocenyl part of the mol., followed by rapid decomposition

Compounds in my other articles are similar to this one(Bromoferrocene)Electric Literature of C10BrFe, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.

Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Ethyl 3,5-Dimethyl-2-pyrrolecarboxylate, is researched, Molecular C9H13NO2, CAS is 2199-44-2, about Protonated Nitrogen Structure in 15N-Labeled Model Coal Investigated by Solid-State 1H-15N Double-CP NMR Experiments under Ultrafast Magic-Angle Spinning, the main research direction is protonated nitrogen structure labeled model coal investigated solid NMR.Computed Properties of C9H13NO2.

The nitrogen structure in coals has been focused on as a key factor for reducing NOx. Solid-state NMR (NMR) with high spectral resolution can be an effective tool for analyzing the nitrogen structure of coals once higher sensitivity is achieved in the future. To investigate the nitrogen structure in coals and coal-related mols., we acquired quant. 15N magic-angle spinning (MAS) NMR spectra of 15N-labeled synthesized coals produced from three different types of 15N-reagents. There were some variations in the relative peak intensity ratios of 15N MAS NMR spectra of the three model coals; in particular, the 15N-uracil-origin model coal showed a remarkable difference. Then, we elucidated the chem. environment around the 15N nuclei in the synthesized 15N-labeled coals using 1H-15N double cross-polarization techniques under the ultrafast MAS condition. From the 2D NMR results, it was clarified that there exist not only pyrrolic nitrogen groups but also amide-type nitrogen functional groups in the 1H-15N bonded region of the model coal with a sub-bituminous-level degree of carbonization.

Compounds in my other articles are similar to this one(Ethyl 3,5-Dimethyl-2-pyrrolecarboxylate)Computed Properties of C9H13NO2, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.

Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 1273-73-0, is researched, Molecular C10BrFe, about Kinetics of the thermal decomposition of ferrocenyl azide: character of ferrocenyl nitrene, the main research direction is ferrocenyl azide thermal decomposition kinetics; nitrene ferrocenyl.Application of 1273-73-0.

The Arrhenius parameters for the thermal decomposition of ferrocenyl azide in isooctane are A = (5.1 ± 1.4) × 1012 s-1 and Eact = 113.1 ± 0.9 (kJ mol-1) and the rate is relatively insensitive to solvent (isooctane, benzene, acetonitrile; 1:1.7:2.4). The results indicate a relatively nonpolar transition state which is considerably “”tighter”” than for a normal bond fission reaction. The Arrhenius parameters are comparable to those for aromatic azides and do not offer any support for anchimeric assistance by the iron atom. A kinetic scheme is presented which accounts for the observed products: nitrogen, ferrocene, aminoferrocene, azoferrocene, and insoluble material. Rates of hydrogen abstraction by the intermediate ferrocenyl nitrene from cyclohexane, benzene, and acetonitrile are used to show that the nitrene is nucleophilic.

Compounds in my other articles are similar to this one(Bromoferrocene)Application of 1273-73-0, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.

Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Synthesis and antitrichomonal activity of azinium (azolium) 4-nitrobenzimidazolate betaines and their derivatives, published in 1992-03-31, which mentions a compound: 15965-55-6, mainly applied to protozoacide nitrobenzimidazolate betaine; trichomonacide nitrobenzimidazolate betaine; benzimidazolate nitro betaine trichomonacide, Electric Literature of C7H4ClN3O2.

Among the many attractive types of heterocyclic betaines, the inner salts of azinium azolates and azolium azolates are few and scattered. The antiprotozoal activity (in vitro) against Trichomonas vaginalis of a variety of mesomeric betaines of pyridinium azolates, their N-azolylpyridinium salts, and N-5-nitrobenzimidazol-2-ylpyridinium derivatives, e.g. 1-(5-nitro-1H-benzimidazol-2-yl)-2,4,6-triphenylpyridinium salts was reported. In the present study, 1-(4-nitro-1H-benzimidazol-2-yl)pyridinium salts were prepared and tested against T. vaginalis in vitro and in vivo.

Compounds in my other articles are similar to this one(2-Chloro-7-nitro-1H-benzo[d]imidazole)Electric Literature of C7H4ClN3O2, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.

Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com