Category: Dioxole

HPLC of Formula: 1265884-98-7. 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: 5-(11bR)-Dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-yl-5H-dibenz[b,f]azepine, is researched, Molecular C34H22NO2P, CAS is 1265884-98-7, about Synergetic iridium and amine catalysis enables asymmetric [4+2] cycloadditions of vinyl aminoalcohols with carbonyls. Author is Zhang, Mao-Mao; Wang, Ya-Ni; Wang, Bao-Cheng; Chen, Xiao-Wang; Lu, Liang-Qiu; Xiao, Wen-Jing.

Catalytic asym. cycloadditions via transition-metal-containing dipolar intermediates are a powerful tool for synthesizing chiral heterocycles. However, within the field of palladium catalysis, compared with the well-developed normal electron-demand cycloadditions with electrophilic dipolarophiles, a general strategy for inverse electron-demand ones with nucleophilic dipolarophiles remains elusive, due to the inherent linear selectivity in the key palladium-catalyzed intermol. allylations. Herein, based on the switched regioselectivity of iridium-catalyzed allylations, two asym. [4+2] cycloadditions of vinyl aminoalcs. with aldehydes and β,γ-unsaturated ketones through synergetic iridium and amine catalysis were achieved. The activation of vinyl aminoalcs. by iridium catalysts and carbonyls by amine catalysts provide a foundation for the subsequent asym. [4+2] cycloadditions of the resulting iridium-containing 1,4-dipoles and (di)enamine dipolarophiles. The former provides a straightforward route to a diverse set of enantio-enriched hydroquinolines bearing chiral quaternary stereocenters, and the later represent an enantio- and diastereodivergent synthesis of chiral hydroquinolines.

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

Formula: C11H8Br2. 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-Bromo-6-(bromomethyl)naphthalene, is researched, Molecular C11H8Br2, CAS is 305798-02-1, about Investigation of the structural requirements for N-methyl-D-aspartate receptor positive and negative allosteric modulators based on 2-naphthoic acid. Author is Irvine, Mark W.; Fang, Guangyu; Sapkota, Kiran; Burnell, Erica S.; Volianskis, Arturas; Costa, Blaise M.; Culley, Georgia; Collingridge, Graham L.; Monaghan, Daniel T.; Jane, David E..

The N-methyl-D-aspartate receptor (NMDAR), a ligand-gated ion channel activated by L-glutamate and glycine, plays a major role in the synaptic plasticity underlying learning and memory. NMDARs are involved in neurodegenerative disorders such as Alzheimer’s and Parkinson’s disease and NMDAR hypofunction is implicated in schizophrenia. Herein we describe structure-activity relationship (SAR) studies on 2-naphthoic acid derivatives to investigate structural requirements for pos. and neg. allosteric modulation of NMDARs. These studies identified compounds such as UBP684 (14b), which act as pan potentiators by enhancing NMDAR currents in diheteromeric NMDAR tetramers containing GluN1 and GluN2A-D subunits. 14B and derivatives thereof are useful tools to study synaptic function and have potential as leads for the development of drugs to treat schizophrenia and disorders that lead to a loss of cognitive function. In addition, SAR studies have identified a series of styryl substituted compounds with partial NAM activity and a preference for inhibition of GluN2D vs. the other GluN2 subunits. In particular, the 3-and 2-nitrostyryl derivatives UBP783 (79i) and UBP792 (79h) had IC50s of 1.4 μM and 2.9 μM, resp., for inhibition of GluN2D but showed only 70-80% maximal inhibition. GluN2D has been shown to play a role in excessive pain transmission due to nerve injury and potentially in neurodegenerative disorders. Partial GluN2D inhibitors may be leads for the development of drugs to treat these disorders without the adverse effects observed with full NMDAR antagonists.

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

Safety of H-Trp-OMe.HCl. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: H-Trp-OMe.HCl, is researched, Molecular C12H15ClN2O2, CAS is 7524-52-9, about Mild and Chemoselective Thioacylation of Amines Enabled by the Nucleophilic Activation of Elemental Sulfur. Author is Saito, Masato; Murakami, Sho; Nanjo, Takeshi; Kobayashi, Yusuke; Takemoto, Yoshiji.

A mild and chemoselective method for the thioacylation of amines using α-keto acids and elemental sulfur has been developed. The key to the success of this transformation is the nucleophilic activation of elemental sulfur by thiols such as 1-dodecanethiol. A variety of functional groups, including unprotected hydroxyl, carboxyl, amide, sulfide, and tertiary amine moieties, are tolerated under the applied reaction conditions. To demonstrate the advantages of this method compared with conventional O-S exchange reactions using Lawesson’s reagent or P2S5, thioamide moieties were introduced site-specifically into biol. active compounds

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

Quality Control of 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide. 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: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide, is researched, Molecular C11H13OP, CAS is 707-61-9, about Synthesis of some 1-aryl-2,3-dibromophospholanes as novel anti-cancer agents. Author is Yamada, Manabu; Asai, Kazuhide; Yamashita, Junko; Suyama, Takuya; Niimi, Taishi; Maddali, Kasthuraiah; Fujie, Michio; Nakamura, Satoki; Kimura, Motohiko; Tanaka, Yasutaka; Toda, Mitsuo; Yamashita, Mitsuji.

Novel phosphorus heterocyclic compounds, 3-methyl-1-(3-bromophenyl as well as some 3-substituted phenyl)-2-phospholene 1-oxides, were synthesized from 1-phenyl-2-phospholene 1-oxide via 3-methyl-1-(3-nitrophenyl)-2-phospholene 1-oxide. 1-(4-Bromophenyl)-2-phospholene was prepared by Grignard coupling reaction of 1-chloro-3-methyl-2-phospholene 1-oxide with 4-bromophenylmagnesium bromide. 2,3-Dibromo-3-methyl-1-arylphospholane 1-oxides were prepared by the addition reaction of bromine to the C=C double bond of 2-phospholenes. The substituent effect of the Ph group of the 1-aryl-phospholanes on the observed anti-proliferative effect against U937 leukemia cell lines evaluated by MTT in vitro methods showed that 2,3-dibromo-3-methyl-1-(4-bromophenyl)phospholane was the most active among 1-arylphospholanes. These novel dibromophosphorus heterocyclic derivatives exhibit much higher anticancer activity than Gleevec (mol. targeting chemotherapeutic agent) against U937 cells.

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

Computed Properties of C12H15ClN2O2. 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: H-Trp-OMe.HCl, is researched, Molecular C12H15ClN2O2, CAS is 7524-52-9, about A fast and direct iodide-catalyzed oxidative 2-selenylation of tryptophan.

A metal-free 2-selenylation of tryptophan derivatives is reported, where the use of iodide as the catalyst and oxone as the oxidant is key to obtain high yields. Various functional groups within the di-selenyl and the indole ring are tolerated, and no racemization is generally observed

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

Recommanded Product: 1265884-98-7. 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: 5-(11bR)-Dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-yl-5H-dibenz[b,f]azepine, is researched, Molecular C34H22NO2P, CAS is 1265884-98-7, about Iridium-Catalyzed Enantioselective Allyl-Allyl Cross-Coupling of Racemic Allylic Alcohols with Allylboronates. Author is Zheng, Yu; Yue, Bei-Bei; Wei, Kun; Yang, Yu-Rong.

Carreira’s iridium-(P, olefin) phosphoramidite-based catalytic system that allows asym. allyl-allylboronate cross-coupling with high enantioselectivity is reported. This transformation tolerates a large variety of racemic branched allylic alcs. and allylboronate substrates. The utility of the coupling is demonstrated in a concise catalytic asym. synthesis of (-)-preclamol (I).

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

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Research Support, Non-U.S. Gov’t, Angewandte Chemie, International Edition called Trimethyl Orthoacetate and Ethylene Glycol Mono-Vinyl Ether as Enolate Surrogates in Enantioselective Iridium-Catalyzed Allylation, Author is Sempere, Yeshua; Carreira, Erick M., which mentions a compound: 1265884-98-7, SMILESS is N1(P2OC3=CC=C4C=CC=CC4=C3C5=C6C=CC=CC6=CC=C5O2)C7=CC=CC=C7C=CC8=CC=CC=C81, Molecular C34H22NO2P, Product Details of 1265884-98-7.

Tri-Me orthoacetate and ethylene glycol mono-vinyl ether are employed in iridium-catalyzed enantioselective allylation reactions. The method documented enables their convenient use as surrogates for silyl ketene acetals and silyl enol ethers to prepare γ,δ-unsaturated esters and protected aldehydes with excellent enantioselectivity. The utility of this novel method has been demonstrated by its implementation in a formal enantioselective synthesis of the meroterpenoid (+)-conicol.

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

Zhou, Zhenhua published the article 《A chiral shift reagent for measurement of optical purities of chiral phosphine oxides》. Keywords: phosphine oxide optical purity determination; NMR phosphine oxide optical purity determination; phenylmethylphospholene optical purity determination; phospholene methylphenyl optical purity determination; nitrobenzoylphenylethylamine chiral shift reagent NMR.They researched the compound: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide( cas:707-61-9 ).HPLC of Formula: 707-61-9. 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:707-61-9) here.

(R)-(-)-N-(3,5-Dinitrobenzyl)-α-phenylethylamine (I) is an excellent chiral shift reagent for measurement of optical purities of chiral phosphine oxides. The method of preparation and application of reagent I are discussed in detail. 1-Phenyl-3-methyl-2-phospholene(II) is oxidized to 1-phenyl-3-methyl-2-phospholene 1-oxide (III) which is then reacted with tert-BuOOH with complete retention of optical activity. When phosphine oxide is mixed with reagent(I), optical purity of phosphine oxide can be measured according to 1H NMR spectra; the optical purity of II can be determined

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

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: 5-(11bR)-Dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-yl-5H-dibenz[b,f]azepine, is researched, Molecular C34H22NO2P, CAS is 1265884-98-7, about Iridium-catalyzed enantioselective allylic substitution with aqueous solutions of nucleophiles.Formula: C34H22NO2P.

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

Nallagonda, Rajender; Karimov, Rashad R. published the article 《Copper-Catalyzed Regio- and Diastereoselective Additions of Boron-Stabilized Carbanions to Heteroarenium Salts: Synthesis of Azaheterocycles Containing Contiguous Stereocenters》. Keywords: nonaromatic nitrogen heterocycle preparation diastereoselective addition boron carbanion heteroarenium.They researched the compound: Methyl 5-fluoro-3-pyridinecarboxylate( cas:455-70-9 ).Product Details of 455-70-9. 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:455-70-9) here.

Nucleophilic addition of diborylalkyl reagents to N-alkyl or N-acylpyridinium and related heteroarenium salts has been developed as a key step for the synthesis of nonaromatic nitrogen heterocycles that contain contiguous stereogenic centers. Derivatization of the dihydropyridine products for the synthesis of tetrahydropyridines and piperidines have also been described.

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