Tag: M.W:100-200

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 5-Chloropyridin-3-amine, is researched, Molecular C5H5ClN2, CAS is 22353-34-0, about Silver-Mediated Trifluoromethoxylation of (Hetero)aryldiazonium Tetrafluoroborates, the main research direction is silver mediated Sandmeyer fluoromethoxylation aryl heteroaryl amine.Related Products of 22353-34-0.

Here we report a silver-mediated trifluoromethoxylation of (hetero)aryldiazonium tetrafluoroborates by converting an aromatic amino group into an OCF3 group. This method, which can be considered to be a trifluoromethoxylation variation of the classic Sandmeyer-type reaction, uses readily available aryl and heteroaromatic amines as starting materials and AgOCF3 as trifluoromethoxylating reagents. The broad substrate scope and simple, mild reaction condition made this transformation a valuable method in constructing aryl-OCF3 bonds.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide( cas:707-61-9 ) is researched.Synthetic Route of C11H13OP.Schirmer, Marie-Luis; Jopp, Stefan; Holz, Jens; Spannenberg, Anke; Werner, Thomas published the article 《Organocatalyzed Reduction of Tertiary Phosphine Oxides》 about this compound( cas:707-61-9 ) in Advanced Synthesis & Catalysis. Keywords: organocatalyzed reduction tertiary phosphine oxide; phosphine borane preparation crystal mol structure. Let’s learn more about this compound (cas:707-61-9).

A novel selective catalytic reduction method of tertiary phosphine oxides to the corresponding phosphines has been developed. Notably, the reaction proceeds smoothly with low catalyst loadings of 1-5 mol% even at low temperature (70°). Under the optimized conditions various phosphine oxides could be selectively reduced and the desired phosphines were usually obtained in excellent yields above 90%. Furthermore, authors have developed a one-pot reaction sequence for the preparation of valuable phosphine·borane adducts. Simple addition of BH3·THF subsequent to the reduction step gave the desired adducts in yields up to 99%.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Feng, Rui; Jie, Suyun; Braunstein, Pierre; Li, Bo-Geng published the article 《Pyridyl-urea catalysts for the solvent-free ring-opening polymerization of lactones and trimethylene carbonate》. Keywords: pyridyl urea catalyst ring opening polymerization lactone trimethylene carbonate; solvent free green ring opening polymerization pyridyl urea catalyst.They researched the compound: 5-Chloropyridin-3-amine( cas:22353-34-0 ).Product Details of 22353-34-0. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:22353-34-0) here.

The ring-opening polymerization (ROP) of lactones is an effective method for the preparation of biocompatible and biodegradable aliphatic polyesters, for which the development of efficient organocatalysts with high activity and good controllability is highly desirable. A series of novel pyridyl-urea catalysts was synthesized and applied in the solvent-free ROP of lactones and trimethylene carbonate. Combined with 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene (MTBD), the pyridyl-urea/MTBD systems showed a fast and living/controlled behavior in the ROP, generating polymers with narrow mol. weight distributions. The influences of catalyst structure, type of base, pyridyl-urea/base ratio, feed ratio of monomer/initiator and reaction temperature on the catalytic properties were investigated. A possible mechanism was proposed on the basis of NMR titration and dilution experiments

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Safety of 2-Bromomethyl-1,3-dioxolane. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 2-Bromomethyl-1,3-dioxolane, is researched, Molecular C4H7BrO2, CAS is 4360-63-8, about Iridium-catalyzed enantioselective allylic substitution with aqueous solutions of nucleophiles. Author is Sandmeier, Tobias; Goetzke, F. Wieland; Krautwald, Simon; Carreira, Erick M..

The iridium-catalyzed asym. allylic substitution under biphasic conditions is reported. This approach allows the use of various unstable and/or volatile nucleophiles including hydrazines, methylamine, t-Bu hydroperoxide, N-hydroxylamine, α-chloroacetaldehyde and glutaraldehyde. This transformation provides rapid access to a broad range of products from simple starting materials in good yields and up to >99% ee and 20:1 d.r. Addnl., these products can be elaborated efficiently into a diverse set of cyclic and acyclic compounds, bearing up to four stereocenters. The iridium-catalyzed asym. allylic substitution under biphasic conditions is reported. This approach allows the use of various unstable and/or volatile nucleophiles including hydrazines, methylamine, t-Bu hydroperoxide, N-hydroxylamine, α-chloroacetaldehyde and glutaraldehyde. This transformation provides rapid access to a broad range of products from simple starting materials in good yields and up to >99% ee and 20:1 d.r.. Addnl., these products can be elaborated efficiently into a diverse set of cyclic and acyclic compounds, bearing up to four stereocenters.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Quality Control of 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide. 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: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide, is researched, Molecular C11H13OP, CAS is 707-61-9, about Synthesis and in vitro evaluation of 2,3-dibromo-3-methyl-1-phenylphospholane 1-oxide for potential anti-proliferative effects.

A novel phospha sugar analog, 2,3-dibromo-3-methyl-1-phenylphosphotane 1-oxide (DBMPP), was prepared from 1-phenyl-3-methyl-2-phospholene1-oxide and evaluated by in vitro MTT method for leukemia cells and microscopic observations for solid tumor cells, e.g., stomach cancer cells. The evaluation revealed clearly that the synthesized phospha sugar analog DBMPP has competent potentials and excellent anti-cancer activities that killed selectively and specifically the leukemia cells of cell lines of K562 and U937 but did not give any damages on healthy leukocyte. Moreover, it was revealed that DBMPP killed solid cancer cells such as stomach cancer cells and melanoma of cell lines of MKN45 and G361. Therefore, DBMPP should exert anti-proliferative effects for different kinds of tumor cells based on the in vitro evaluations. The cell cycle analyses by flow cytometry for K562 and U937 cells clearly demonstrated that the mechanism of the anti-proliferative effect on the human tumor cells is apoptosis induced by DBMPP.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Zeng, Guangkuo; Li, Yunqiang; Qiao, Baokun; Zhao, Xiaowei; Jiang, Zhiyong published the article 《Photoredox asymmetric catalytic enantioconvergent substitution of 3-chlorooxindoles》. Keywords: aminomethylene oxindole preparation enantioselective; chlorooxindole aryl glycine substitution photocatalyst.They researched the compound: 2-Bromomethyl-1,3-dioxolane( cas:4360-63-8 ).HPLC of Formula: 4360-63-8. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:4360-63-8) here.

An enantioconvergent substitution of 3-substituted 3-chlorooxindoles I (R = H, 6-Cl, 4-Br, 5-NO2, etc.; R1 = 4-FC6H4S(O)2, Me; Ar = Ph, naphthalen-2-yl, C6D5, etc.) with N-aryl glycines Ar1NHCH2C(O)OH [Ar1 = 4-methoxyphenyl, 4-methoxy-3-(trifluoromethyl)phenyl] under visible light irradiation is reported. A transition-metal-free cooperative catalysis platform with a dicyanopyrazine-derived chromophore (DPZ) as a photoredox catalyst and a chiral Bronsted acid catalyst is effective for these transformations, which involve a single-electron transfer redox step and an enantioselective radical coupling. A variety of valuable chiral 3-aminomethylene-3-substituted oxindoles II can be directly synthesized with high yields and enantioselectivities.

In addition to the literature in the link below, there is a lot of literature about this compound(2-Bromomethyl-1,3-dioxolane)HPLC of Formula: 4360-63-8, illustrating the importance and wide applicability of this compound(4360-63-8).

Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Synthetic Route of C4H7BrO2. 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: 2-Bromomethyl-1,3-dioxolane, is researched, Molecular C4H7BrO2, CAS is 4360-63-8, about A Practical and Versatile Method for the C-H Sulfenylation of Imidazo[1,2- a ]pyridines. Author is Al-Saedy, Muhannad A. E.; Harrity, Joseph P. A..

Direct introduction of a broad selection of aromatic, heteroaromatic, or alkyl fragments connected by a thioether group into these important heterocycles by using readily prepared thiosulfate salts was reported.

There are many compounds similar to this compound(4360-63-8)Synthetic Route of C4H7BrO2. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.

Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

HPLC of Formula: 707-61-9. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide, is researched, Molecular C11H13OP, CAS is 707-61-9, about Synthesis of photosensitive polycarbodiimide. Author is Mochizuki, Amane; Takeshi, Kazumasa; Haba, Osamu; Kato, Sadao; Ueda, Mitsuru.

A neg.-working photosensitive polymer based on polycarbodiimide (PCD) and {[(4,5-dimethoxy-2-nitrobenzyl)oxy]carbonyl}-2-methylpiperidine (I) as a photoamine generator(PAG) has been developed. The end-capped PCDs with number average mol. weights of 1500 and 2500 were prepared by polycondensation of tolylene 2,4-diisocyanate (TDI) in the presence of m-tolyl isocyanate and 3-methyl-1-phenyl-2-phospholene-1-oxide as an end-capping agent and a catalyst, resp. PCDs were amorphous and soluble in common organic solvents, such as toluene, chloroform, and cyclohexanone. Thermogravimetry of the polymers showed good thermal stability, indicating that a 10% weight loss of the polymers was at 480° in nitrogen. The PCD films were transparent above 360 nm. The PCD containing I showed a sensitivity of 225 mJ/cm2 and a contrast of 1.5, when it was post-baked at 90°C sec, followed by development with toluene at 25°C.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Safety of 2-Bromomethyl-1,3-dioxolane. 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: 2-Bromomethyl-1,3-dioxolane, is researched, Molecular C4H7BrO2, CAS is 4360-63-8, about Discovery of novel positive allosteric modulators of the α7 nicotinic acetylcholine receptor: Scaffold hopping approach. Author is Ledneczki, Istvan; Tapolcsanyi, Pal; Gabor, Eszter; Visegrady, Andras; Vass, Marton; Eles, Janos; Holm, Patrik; Horvath, Anita; Pocsai, Aniko; Maho, Sandor; Greiner, Istvan; Kramos, Balazs; Beni, Zoltan; Koti, Janos; Kancz, Anna E.; Than, Marta; Kolok, Sandor; Laszy, Judit; Balazs, Ottilia; Bugovits, Gyula; Nagy, Jozsef; Vastag, Monika; Szajli, Agota; Bozo, Eva; Levay, Gyorgy; Lendvai, Balazs; Nemethy, Zsolt.

The paper focuses on the scaffold hopping-based discovery and characterization of novel nicotinic alpha 7 receptor pos. modulator (α7 nAChR PAM) ligands around the reference mol. (A-867744). First, substantial efforts were carried out to assess the importance of the various pharmacophoric elements on the in vitro potency (SAR evaluation) by chem. modifications. Subsequently, several new derivatives with versatile, heteroaromatic central cores were synthesized and characterized. A promising, pyrazole-containing new chemotype with good physicochem. and in vitro parameters was identified. Retrospective anal. based on homol. modeling was also carried out. Besides its favorable in vitro characteristics, the most advanced derivative 69 also showed in vivo efficacy in a rodent model of cognition (scopolamine-induced amnesia in the mouse place recognition test) and acceptable pharmacokinetic properties. Based on the in vivo data, the resulting mol. with advanced drug-like characteristics has the possibility to improve cognitive performance in a biol. relevant dose range, further strengthening the view of the supportive role of α7 nACh receptors in the cognitive processes.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Application In Synthesis of 2-Bromomethyl-1,3-dioxolane. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 2-Bromomethyl-1,3-dioxolane, is researched, Molecular C4H7BrO2, CAS is 4360-63-8, about Assembly of multicyclic isoquinoline scaffolds from pyridines: formal total synthesis of fredericamycin A. Author is Wang, Fang-Xin; Yan, Jia-Lei; Liu, Zhixin; Zhu, Tingshun; Liu, Yingguo; Ren, Shi-Chao; Lv, Wen-Xin; Jin, Zhichao; Chi, Yonggui Robin.

The construction of an isoquinoline skeleton typically starts with benzene derivatives as substrates with the assistance of acids or transition metals. Disclosed here is a concise approach to prepare isoquinoline analogs by starting with pyridines to react with β-ethoxy α,β-unsaturated carbonyl compounds under basic conditions. Multiple substitution patterns and a relatively large number of functional groups (including those sensitive to acidic conditions) can be tolerated the method. In particular, protocol allows for efficient access to tricyclic isoquinolines found in hundreds of natural products with interesting bioactivities. The efficiency and operational simplicity of introducing structural complexity into the isoquinoline frameworks can likely enable the collective synthesis of a large set of natural products. Here show that fredericamycin A could be obtained via a short route by using isoquinoline synthesis as a key step.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem