Tag: M.W:100-200

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 707-61-9, is researched, SMILESS is CC1=CP(CC1)(C2=CC=CC=C2)=O, Molecular C11H13OPJournal, Journal of Carbohydrate Chemistry called Novel synthesis and structures of amines and triazole-derived glycoside and nucleoside derivatives of phosphanyl sugar analogs, Author is Yamashita, Mitsuji; Suzuki, Kazumitsu; Kato, Yukihiro; Iida, Akihito; Ikai, Koichi; Reddy, Putta Mallikarjuna; Oshikawa, Tatsuo, the main research direction is triazole amino nucleoside phosphanyl analog preparation crystal structure; amino triazole glycoside phosphanyl analog preparation crystal structure.HPLC of Formula: 707-61-9.

3-Methyl-1-phenyl-2-phospholene and 1-phenyl-2-phospholene 1-oxides were converted into 2-bromo-3-hydroxy-3-methyl-1-phenylphospholane and 2-bromo-3-hydroxy-1-phenylphospholane 1-oxide (1-bromo-1,3,4-trideoxy-1,4-C-[(R, S)-phenylphosphinylidene]-glycero-tetrofuranose) by the action of bromine in aqueous medium. The bromo substituent of the phospholane was substituted by treatment with amines or an azide anion to afford novel glycoside derivatives of phosphanyl sugar analogs such as 2-amino-3-hydroxy-1-phenylphospholane (3,4-dideoxy-1,4-C-[(R, S)-phenylphosphinylidene]-glycero-tetrofuranosylamine) and 2-azido-3-hydroxy-3-methyl-1-phenylphospholane 1-oxides with retention of the configuration. The 1,3-dipolar cycloaddition of the 2-azido derivative of the phospholane with alkynes gave 3-hydroxy-3-methyl-1-phenyl-2-(triazol-1′-yl)phospholane 1-oxides as a novel triazole-derived nucleoside of phosphanyl sugar analogs. The structure of the glycoside and nucleoside derivatives of the phosphanyl sugar analogs prepared was determined from IR, NMR, and X-ray crystallog. anal.

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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, Roczniki Chemii called Investigations on the isomerization of ring-substituted derivatives of 3-nitraminopyridines. I. Chloro-3-nitraminopyridines, Author is Czuba, Wladyslaw, which mentions a compound: 22353-34-0, SMILESS is NC1=CC(=CN=C1)Cl, Molecular C5H5ClN2, Category: dioxole.

6-(m. 139°), 2- (m. 100-3°), 5- (m. 146°), and 4-Chloro-3-nitraminopyridine (m. 179°) (all with decomposition) heated to 40° in concentrated H2SO4 underwent isomerization to 6,6′-dichloro- (I) (m. 215-17°, yield 10%) and 6,6′-dichloro-2-nitro- (II) (m. 165°, 9%), 2,2′-dichloro- (III) (m. 237-9°, 26%), 5,5′-dichloro- 3, 3′-azopyridine (IV) (m. 183°, 16%) and 5-chloro-3-hydroxypyridine (m. 158°, 32%), and 4,4′-dichloro-3,3′-azopyridine (V) (m. 164°, 40%), resp. I, III, IV, and V with SnCl2, Sn, or NaSH gave the hydrazopyridines, m. 183-5°, 209°, 128-31°, and 172°, resp., yields 70-91%. Reduction of III yielded 6-chloro-2,3-diamino- and -3-aminopyridine. A new method of preparation of 3-amino-5-chloropyridine (VI) was described. Br (32 g.) dissolved in 25 g. NaOH, 50 ml. H2O, and 250 g. ice, 25.5 g. 5-chloronicotinic acid amide added, the mixture heated 0.5 hr. at 75°, the solution saturated with NaCl, extracted with Et2O, dried (K2CO3), and evaporated gave 83% VI, m. 82° (C6H6 + ligroine).

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1,3-Benzodioxole – Wikipedia,
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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.Product Details of 707-61-9.O’Brien, Christopher J.; Nixon, Zachary S.; Holohan, Andrew J.; Kunkel, Stephen R.; Tellez, Jennifer L.; Doonan, Bryan J.; Coyle, Emma E.; Lavigne, Florie; Kang, Lauren J.; Przeworski, Katherine C. published the article 《Part I: The Development of the Catalytic Wittig Reaction》 about this compound( cas:707-61-9 ) in Chemistry – A European Journal. Keywords: Wittig reaction phosphole phospholane phosphate oxide preparation catalyst; Wittig reaction; alkenes; homogeneous catalysis; olefination; organocatalysis. Let’s learn more about this compound (cas:707-61-9).

The authors have developed the first catalytic (in phosphane) Wittig reaction (CWR). The utilization of an organosilane was pivotal for success as it allowed for the chemoselective reduction of a phosphane oxide. Protocol optimization evaluated the phosphane oxide pre-catalyst structure, loading, organosilane, temperature, solvent, and base. These studies demonstrated that to maintain viable catalytic performance it was necessary to employ cyclic phosphane oxide pre-catalysts of type 1. Initial substrate studies utilized sodium carbonate as a base, and further experimentation identified N,N-diisopropylethylamine (DIPEA) as a soluble alternative. The use of DIPEA improved the ease of use, broadened the substrate scope and decreased the pre-catalyst loading. The optimized protocols were compatible with alkyl, aryl, and heterocyclic (furyl, indolyl, pyridyl, pyrrolyl, and thienyl) aldehydes to produce both disubstituted and trisubstituted olefins in moderate-to-high yields (60-96%) by using a pre-catalyst loading of 4-10 mol%. Kinetic E/Z selectivity was generally 66:34. Complete (E)-selectivity for disubstituted α,β-unsaturated products was achieved through a phosphane-mediated isomerization event. The CWR was applied to the synthesis of a known precursor to the anti-Alzheimer drug donepezil hydrochloride, on a multi-gram scale (12.2 g, 74% yield). In addition, the described CWR is the only transition-metal-free/heavy-metal-free catalytic olefination process, excluding proton-catalyzed elimination reactions. The synthesis of the target compounds was achieved (1R,3S)-rel-3-methyl-1-phenylphospholane 1-oxide, (1R,3R)-rel-3-methyl-1-phenylphospholane 1-oxide, 1-phenylphospholane 1-oxide as catalyst precursors. 2-Phenyl-1,3,2-dioxaphospholane 2-oxide, diethylphenylphosphine oxide, 5-phenyl-5H-benzo[b]phosphindole 5-oxide, (2R,2’R,5R,5’R)-1,1′-(1,2-ethanediyl)bis[2,5-bis(1-methylethyl)phospholane], 2-[2-[(2R,5R)-2,5-dimethyl-1-phospholanyl]phenyl]-1,3-dioxolane were also evaluated.

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

Category: dioxole. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Methyl 5-fluoro-3-pyridinecarboxylate, is researched, Molecular C7H6FNO2, CAS is 455-70-9, about Strategic C-C Bond-Forming Dearomatization of Pyridines and Quinolines. Author is Wang, Dong; Wang, Zhentao; Liu, Zhenlin; Huang, Mindong; Hu, Jianyong; Yu, Peng.

A one-pot protocol for the dearomative double nucleophilic addition to pyridines and quinolines, providing convenient, regioselective and diastereoselective access to tetrahydropyridines and tetrahydroquinolines under reductant-free conditions is described. This method also offers a new strategy for the general dearomatization of nitrogen heteroaromatics

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

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 707-61-9, is researched, SMILESS is CC1=CP(CC1)(C2=CC=CC=C2)=O, Molecular C11H13OPJournal, Tetrahedron Letters called An efficient approach towards the stereospecific synthesis of epoxides from phospholene oxides, Author is Yamashita, Mitsuji; Krishna Reddy, Valluru; Rao, Lakonda Nagaprasada; Haritha, Buchammagari; Maeda, Motoki; Suzuki, Keiji; Totsuka, Hirono; Takahashi, Masaki; Oshikawa, Tatsuo, the main research direction is stereospecific synthesis epoxide phospholene oxide; stereoselective synthesis epoxide phospholene oxaphosphabicyclohexane oxide; epoxy phospholane oxide preparation stereoselective oxidation sodium peroxide phosphole; epoxyphosphole oxide preparation stereoselective oxidation sodium peroxide phosphole; AZT analog oxaphosphabicyclohexane oxide intermediate preparation oxidation; diastereoselective synthesis epoxide phospholene oxaphosphabicyclohexane oxide.Safety of 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide.

A novel method has been developed for stereospecific conversion of 2-phospholene 1-oxides into their corresponding 2,3-epoxides in high yields using sodium peroxide as a reagent. 2,3-Dihydro-1-phenyl-1H-phosphole 1-oxide (I) was inert to oxidation with 3-chloroperbenzoic acid; oxidation of I with bromine or N-bromoacetamide gave 2-bromo-3-hydroxy-1-phenylphospholane oxide as diastereomeric mixture and subsequent treatment of the bromohydrin gave a mixture of (1R,2S,5S)-rel-2-phenyl-6-Oxa-2-phosphabicyclo[3.1.0]hexane 2-oxide (erythro, II) and (1R,2R,5S)-rel-2-phenyl-6-Oxa-2-phosphabicyclo[3.1.0]hexane 2-oxide (threo). Epoxidation of I using sodium peroxide [Na2(O2)] gave II as a single diastereomer in 76% yield. 2,3-Dihydro-4-methyl-1-phenyl-1H-phosphole 1-oxide and 2,3-dihydro-1-methoxy-4-methyl-1H-phosphole 1-oxide failed to react with sodium peroxide [Na2(O2)]. The compounds thus prepared are intermediates for AZT analogs of phospha sugars (no data).

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

Related Products of 455-70-9. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Methyl 5-fluoro-3-pyridinecarboxylate, is researched, Molecular C7H6FNO2, CAS is 455-70-9, about An Improved Catalyst System for the Pd-Catalyzed Fluorination of (Hetero)Aryl Triflates. Author is Lee, Hong Geun; Milner, Phillip J.; Buchwald, Stephen L..

The stable Pd(0) species [(1,5-cyclooctadiene)(L·Pd)2] (L = AdBrettPhos, I, R = adamantyl) has been prepared and successfully evaluated as a precatalyst for the fluorination of aryl triflates derived from biol. active and heteroaryl phenols, challenging substrates for our previously reported catalyst system [e.g., estrone triflate → 3-fluorodeoxyestrone in 74% yield and >20:1 regioselectivity]. Addnl., this precatalyst activates at room temperature under neutral conditions, generates 1,5-cyclooctadiene as the only byproduct, and leads to overall cleaner reaction profiles.

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

Related Products of 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 Recycling the Waste: The Development of a Catalytic Wittig Reaction. Author is O’Brien, Christopher J.; Tellez, Jennifer L.; Nixon, Zachary S.; Kang, Lauren J.; Carter, Andra L.; Kunkel, Stephen R.; Przeworski, Katherine C.; Chass, Gregory A..

The first Wittig reaction catalytic in phosphine has been developed. A variety of heteroaryl, aryl, and alkyl aldehydes could be efficiently converted to the corresponding alkenes in moderate to high yield with the utilization of the phosphine oxide precatalyst I.

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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: 2-Bromomethyl-1,3-dioxolane( cas:4360-63-8 ) is researched.Name: 2-Bromomethyl-1,3-dioxolane.Ramakrishna, Kolluri; Sreenivasulu, Reddymasu; Rao, Mandava Venkata Basaveswara; Vidavalur, Siddaiah; Reddy, Boggu Jagan Mohan published the article 《Stereoselective total synthesis of diplodialide A》 about this compound( cas:4360-63-8 ) in Chemical Papers. Keywords: diplodialide A stereoselective synthesis. Let’s learn more about this compound (cas:4360-63-8).

An efficient stereoselective total synthesis of diplodialide A I was achieved from inexpensive and com. available starting material (R)-propylene oxide. This linear synthesis utilizes Wittig reaction, alkylation of 1,3-dithiane and Yamaguchi macrolactonization as key steps.

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1,3-Benzodioxole – Wikipedia,
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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: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide, is researched, Molecular C11H13OP, CAS is 707-61-9, about A novel conversion of erythro phospholane epoxides to one-carbon atom homologated allylic alcohols.SDS of cas: 707-61-9.

A novel synthetic approach is described to incorporate one more C atom at C-2 position of phospholane oxides as homologated allylic alc. I by treatment of erythro-2,3-epoxy-3-methylphospholane 1-oxides, e.g., II (R = Ph, C6H4NO2-m, C6H4OMe-p, OMe, OEt, OPr-i), with excess of dimethylsulfonium methylide.

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

Biswas, Soumik; Qu, Bo; Desrosiers, Jean-Nicolas; Choi, Younggi; Haddad, Nizar; Yee, Nathan K.; Song, Jinghua J.; Senanayake, Chris H. published the article 《Nickel-Catalyzed Cross-Electrophile Reductive Couplings of Neopentyl Bromides with Aryl Bromides》. Keywords: nickel catalyst reductive coupling neopentyl aryl bromides.They researched the compound: 2-Bromomethyl-1,3-dioxolane( cas:4360-63-8 ).Application of 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.

5-Cyanoimidazole was identified as an inexpensive ligand for nickel-catalyzed cross-electrophile couplings by screening a diverse set of pharmaceutical compound library. A strategic screening approach led to the discovery of this novel ligand, which was successfully applied in the preparation of various alkylated arene products with good to high yields. Furthermore, the properties of this ligand allowed expanding the scope of reductive couplings to challenging substrates, such as sterically hindered neopentyl halides, which are known to generate motifs that are prevalent in biol. active mols.

In some applications, this compound(4360-63-8)Application of 4360-63-8 is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.

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