Day: November 4, 2021

An article Metal-Free Cyclocarboamination of ortho-Formyl Phenylacetylenes with Secondary Amines: Access to 1,3-Diamino-1H-Indenes and 3-Amino-1-Indanones WOS:000457795500026 published article about CATALYZED HYDROAMINATION; INTERNAL ALKYNES; H BONDS; CARBOAMINATION; ALKENES; GENERATION; ACID; HETEROCYCLES; CYCLIZATION; INSERTION in [Cui, Jian-Fang; Tang, Rishi; Yang, Bin; Lai, Nathanael Chun-Him; Jiang, Jia-Jun; Deng, Jie-Ren; Wong, Man-Kin] Hong Kong Polytech Univ, State Key Lab Chem Biol & Drug Discovery, Dept Appl Biol & Chem Technol, Hong Kong, Peoples R China; [Cui, Jian-Fang] Southern Univ Sci & Technol, Dept Chem, Shenzhen, Peoples R China in 2019, Cited 62. Product Details of 177-11-7. The Name is 1,4-Dioxa-8-azaspiro[4.5]decane. Through research, I have a further understanding and discovery of 177-11-7

This work first discloses a new strategy for amine activation to give reactive amine anion by in situ generated iminium cation-amine anion pair through decomposition of sterically hindered aminals. Utilizing this strategy, a highly regio- and chemoselective cyclocarboamination of ortho-formyl phenylacetylenes with secondary amines has been realized under metal-free mild reaction conditions. The cyclocarboamination with notably tunable product profiles depends on the separation and purification procedure, a diverse range of 1, 3-diamino-1H-indenes (essentially reactive enamines) and 3-amino-1-indanones were obtained, respectively. Moreover, using iodine as an electrophile to couple with various ortho-formyl phenylacetylenes and secondary amines, a series of 3-amino-2-iodo-1-indanones were efficiently achieved with four bonds (C=O, C-C, C-N and C-I) formation in an one-pot three-component reaction. These results demonstrated an unprecedented methodology for the construction of highly functionalized 1H-indene and 1-indanone compounds.

Welcome to talk about 177-11-7, If you have any questions, you can contact Cui, JF; Tang, RS; Yang, B; Lai, NCH; Jiang, JJ; Deng, JR; Wong, MK or send Email.. Product Details of 177-11-7

Reference：
Piperidine – Wikipedia,
Piperidine | C5H7510N – PubChem

Recommanded Product: 177-11-7. In 2020 ORG LETT published article about PALLADIUM-CATALYZED SYNTHESIS; SULFUR-DIOXIDE SURROGATE; ONE-POT; SULFONYL FLUORIDES; BORONIC ACIDS; DABSO; BORYLATION; RONGALITE; REAGENTS; HALIDES in [Alvarez, Eva Maria; Plutschack, Matthew B.; Berger, Florian; Ritter, Tobias] Max Planck Inst Kohlenforsch, D-45470 Mulheim, Germany in 2020, Cited 33. The Name is 1,4-Dioxa-8-azaspiro[4.5]decane. Through research, I have a further understanding and discovery of 177-11-7.

Aryl sulfinates are precursors to a diverse number of sulfonyl-derived arenes, which are common motifs in pharmaceuticals and agrochemicals. Here, we report a site-selective two-step C-H sulfination sequence via aryl sulfonium salts to access aryl sulfonamides. Combined with site-selective aromatic thianthrenation, an operationally simple one-pot palladium-catalyzed protocol introduces the sulfonyl group using sodium hydroxymethylsulfinate (Rongalite) as a source of SO22-. The hydroxymethyl sulfone intermediate generated from the catalytic process can be employed as a synthetic handle to deliver a variety of sulfonyl-containing compounds.

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Reference：
Piperidine – Wikipedia,
Piperidine | C5H7510N – PubChem

Authors Cui, JF; Tang, RS; Yang, B; Lai, NCH; Jiang, JJ; Deng, JR; Wong, MK in WILEY-V C H VERLAG GMBH published article about CATALYZED HYDROAMINATION; INTERNAL ALKYNES; H BONDS; CARBOAMINATION; ALKENES; GENERATION; ACID; HETEROCYCLES; CYCLIZATION; INSERTION in [Cui, Jian-Fang; Tang, Rishi; Yang, Bin; Lai, Nathanael Chun-Him; Jiang, Jia-Jun; Deng, Jie-Ren; Wong, Man-Kin] Hong Kong Polytech Univ, State Key Lab Chem Biol & Drug Discovery, Dept Appl Biol & Chem Technol, Hong Kong, Peoples R China; [Cui, Jian-Fang] Southern Univ Sci & Technol, Dept Chem, Shenzhen, Peoples R China in 2019, Cited 62. COA of Formula: C7H13NO2. The Name is 1,4-Dioxa-8-azaspiro[4.5]decane. Through research, I have a further understanding and discovery of 177-11-7

This work first discloses a new strategy for amine activation to give reactive amine anion by in situ generated iminium cation-amine anion pair through decomposition of sterically hindered aminals. Utilizing this strategy, a highly regio- and chemoselective cyclocarboamination of ortho-formyl phenylacetylenes with secondary amines has been realized under metal-free mild reaction conditions. The cyclocarboamination with notably tunable product profiles depends on the separation and purification procedure, a diverse range of 1, 3-diamino-1H-indenes (essentially reactive enamines) and 3-amino-1-indanones were obtained, respectively. Moreover, using iodine as an electrophile to couple with various ortho-formyl phenylacetylenes and secondary amines, a series of 3-amino-2-iodo-1-indanones were efficiently achieved with four bonds (C=O, C-C, C-N and C-I) formation in an one-pot three-component reaction. These results demonstrated an unprecedented methodology for the construction of highly functionalized 1H-indene and 1-indanone compounds.

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Reference：
Piperidine – Wikipedia,
Piperidine | C5H7510N – PubChem

Product Details of 177-11-7. Authors Wu, J; Zheng, CM; Li, BY; Hawkins, JM; Scott, SL in ROYAL SOC CHEMISTRY published article about in [Wu, Jing; Zheng, Chunming; Scott, Susannah L.] Univ Calif Santa Barbara, Dept Chem Engn, Santa Barbara, CA 93106 USA; [Li, Bryan] Pfizer Global Res & Dev, Chem R&D La Jolla Lab, San Diego, CA 92121 USA; [Hawkins, Joel M.] Pfizer Global Res & Dev, Groton, CT 06371 USA; [Scott, Susannah L.] Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA in 2021, Cited 64. The Name is 1,4-Dioxa-8-azaspiro[4.5]decane. Through research, I have a further understanding and discovery of 177-11-7

N-Boc deprotection (deBoc) is a common reaction in pharmaceutical research and development, as well as pharma manufacturing. Use of a catalyst lowers the required reaction temperature, and heterogeneous catalysts allow the reaction to be conducted in a continuous flow reactor with a low-boiling solvent, facilitating product separation and enhancing efficiency and productivity relative to a batch process. In this study, we explore the use of simple solid Bronsted acid catalysts to achieve continuous N-Boc deprotection of amines, without additional workup steps. Using THF as the solvent, H-BEA zeolite affords high yields of a variety of aromatic and aliphatic amines, often in residence times of less than a minute at 140 degrees C. The same catalyst/solvent combination is ineffective in batch conditions, due to the much lower temperature of refluxing THF. Boc-protected p-chloroaniline was deprotected with a throughput of 18 mmol p-chloroaniline per h per g(cat), sustained over 9 h. The active sites of the zeolite do not appear to be directly associated with the Al framework substitution in the micropores, since partially ion-exchanged Na/H-BEA shows activity similar to H-BEA. The strong Bronsted acid sites (framework [Si(OH)Al]), are likely poisoned by the amine product. Moderate Bronsted acid sites associated with silanol defects near Al on or near the external surface (and not susceptible to Na+-exchange) are presumably the active sites, since they are not poisoned even by more basic aliphatic amines.

Welcome to talk about 177-11-7, If you have any questions, you can contact Wu, J; Zheng, CM; Li, BY; Hawkins, JM; Scott, SL or send Email.. Product Details of 177-11-7

Reference：
Piperidine – Wikipedia,
Piperidine | C5H7510N – PubChem

In 2019 PHOSPHORUS SULFUR published article about PHOSPHORUS-NITROGEN COMPOUNDS; DNA INTERACTIONS; STEREOGENIC PROPERTIES; BIOLOGICAL-ACTIVITIES; CYTOTOXIC ACTIVITIES; ELECTROCHEMICAL INVESTIGATIONS; ANTIMICROBIAL ACTIVITIES; CRYSTAL-STRUCTURES; ANTITUBERCULOSIS; MONO in [Elmas, Gamze] Ankara Univ, Dept Chem, TR-06100 Ankara, Turkey in 2019, Cited 41. The Name is 1,4-Dioxa-8-azaspiro[4.5]decane. Through research, I have a further understanding and discovery of 177-11-7. SDS of cas: 177-11-7

The Cl exchange reaction of hexachlorocyclotriphosphazene, N3P3Cl6 (1), with one equimolar amount of sodium salt of N/O donor type bidentate ligand containing a 2-pyridyl pendant arm (2) afforded, regioselectively, the partly substituted 2-pyridyl(N/O)spirocyclotriphosphazene (3; with a yield of 65%) in THF. The reactions of 3 with excess pyrrolidine, morpholine and 1,4-dioxa-8-azaspiro[4,5]decane (DASD) led to the formation of the tetraamino-2-pyridyl(N/O)spirocyclotriphosphazenes (3a-3c) in high yields. Compound 3 also gave both tetrapiperidino (3d) and gem-bispiperidino (3e) products with excess piperidine. The structures of all the compounds were determined by elemental analyses, ESI-MS, FTIR, HSQC, HMBC and H-1, C-13, and P-31 NMR techniques. The crystal structure of 3c was identified by single crystal X-ray crystallography. Besides, the compound 3e had one stereogenic P atom, and its chirality was verified by P-31 NMR spectroscopy in the presence of (S)-(+)-2,2,2-trifluoro-1-(9′-anthryl)-ethanol (CSA).

SDS of cas: 177-11-7. Welcome to talk about 177-11-7, If you have any questions, you can contact Elmas, G or send Email.

Reference：
Piperidine – Wikipedia,
Piperidine | C5H7510N – PubChem

Product Details of 177-11-7. Authors Schuppe, AW; Knippel, JL; Borrajo-Calleja, GM; Buchwald, SL in AMER CHEMICAL SOC published article about in [Schuppe, Alexander W.; Knippel, James Levi; Borrajo-Calleja, Gustavo M.; Buchwald, Stephen L.] MIT, Dept Chem, Cambridge, MA 02139 USA in 2021, Cited 56. The Name is 1,4-Dioxa-8-azaspiro[4.5]decane. Through research, I have a further understanding and discovery of 177-11-7

The catalytic enantioselective synthesis of a-chiral olefins represents a valuable strategy for rapid generation of structural diversity in divergent syntheses of complex targets. Herein, we report a protocol for the dual CuH- and Pd-catalyzed asymmetric Markovnikov hydroalkenylation of vinyl arenes and the anti-Markovnikov hydroalkenylation of unactivated olefins, in which readily available enol triflates can be utilized as alkenyl coupling partners. This method allowed for the synthesis of diverse alpha-chiral olefins, including tri- and tetrasubstituted olefin products, which are challenging to prepare by existing approaches.

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Reference：
Piperidine – Wikipedia,
Piperidine | C5H7510N – PubChem

COA of Formula: C7H13NO2. I found the field of Chemistry very interesting. Saw the article Synthesis of alpha-Trifluoromethylamines by Cu-Catalyzed Regio- and Enantioselective Hydroamination of 1-Trifluoromethylaikenes published in 2019, Reprint Addresses Hirano, K; Miura, M (corresponding author), Osaka Univ, Grad Sch Engn, Dept Appl Chem, Suita, Osaka 5650871, Japan.. The CAS is 177-11-7. Through research, I have a further understanding and discovery of 1,4-Dioxa-8-azaspiro[4.5]decane.

A copper-catalyzed regioselective net hydroamination of 1-trifluoromethylalkenes with hydrosilanes and hydroxylamines has been developed. The judicious choice of ligand and additive suppresses the conceivable but undesired beta-F elimination of an alpha-CF3-substituted organocopper intermediate, leading to targeted alpha-trifluoromethylamines in good yields with excellent regioselectivity. Additionally, with an appropriate chiral bisphosphine ligand, the enantioselective reaction is also possible to deliver optically active alpha-trifluoromethylamines of high potential in medicinal and pharmaceutical chemistry.

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Reference：
Piperidine – Wikipedia,
Piperidine | C5H7510N – PubChem

Recently I am researching about HYPERVALENT IODINE REAGENTS; AROMATIC NITRATION; TERTIARY-AMINES; H FUNCTIONALIZATION; CONJUGATE ADDITION; SODIUM-NITRITE; UREA NITRATE; NITROMETHANE; OXIDATION; ATOM, Saw an article supported by the Basic Science Research Program of the National Research Foundation of Korea (NRF) – Ministry of Education, Science, and Technology [2017R1E1A1A01076642]. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Mudithanapelli, C; Dhorma, LP; Kim, MH. The CAS is 177-11-7. Through research, I have a further understanding and discovery of 1,4-Dioxa-8-azaspiro[4.5]decane. Computed Properties of C7H13NO2

A novel nitration (via C(sp(3))-N breaking/C(sp(2))-N formation with CH3NO2) mediated by [bis-(trifluoroacetoxy)iodo]benzene (PIFA) is described. The NO2 transfer from CH3NO2 to the aromatic group of the substrate is possible with careful selection of the solvent, NaX, and oxidant. In addition, the solvent-controlled C(sp(2))-H functionalization can shift to an alpha-C(sp(3))-H functionalization (cyanation or oxygenation) of the alpha-C(sp(3))-H of cyclic amines.

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Reference：
Piperidine – Wikipedia,
Piperidine | C5H7510N – PubChem

Authors Zhao, JP; Ding, LJ; Wang, PC; Liu, Y; Huang, MJ; Zhou, XL; Lu, M in WILEY-V C H VERLAG GMBH published article about METAL; NITROSAMINES; AMINATION; NITRO in [Zhao, Ji-Ping; Ding, Lu-jia; Wang, Peng-Cheng; Liu, Ying; Huang, Min-Jun; Zhou, Xin-Li; Lu, Ming] Nanjing Univ Sci & Technol, Sch Chem Engn, Nanjing 210094, Jiangsu, Peoples R China in 2020, Cited 54. Application In Synthesis of 1,4-Dioxa-8-azaspiro[4.5]decane. The Name is 1,4-Dioxa-8-azaspiro[4.5]decane. Through research, I have a further understanding and discovery of 177-11-7

An acid-free N-nitrosation/nitration of the N-H bonds in secondary amines with Fe(NO3)(3)center dot 9H(2)O as the nitroso/nitro source through an electrocatalyzed radical coupling reaction was developed. Cyclic aliphatic amines and N-heteroaromatic compounds were N-nitrosated and N-nitrated, respectively, under mild conditions. Control and competition experiments, as well as kinetic studies, demonstrate that N-nitrosation and N-nitration involve two different radical reaction pathways involving N+ and N-center dot radicals. Moreover, the electrocatalysis method enables the preferential activation of the N-H bond over the electrode and thus provides high selectivity for specific N atoms. Finally, this strategy exhibits a broad scope and provides a green and straightforward approach to generate useful N-nitroso/nitro compounds in good yields.

Welcome to talk about 177-11-7, If you have any questions, you can contact Zhao, JP; Ding, LJ; Wang, PC; Liu, Y; Huang, MJ; Zhou, XL; Lu, M or send Email.. Application In Synthesis of 1,4-Dioxa-8-azaspiro[4.5]decane

Reference：
Piperidine – Wikipedia,
Piperidine | C5H7510N – PubChem

In 2020 ADV SYNTH CATAL published article about METAL; NITROSAMINES; AMINATION; NITRO in [Zhao, Ji-Ping; Ding, Lu-jia; Wang, Peng-Cheng; Liu, Ying; Huang, Min-Jun; Zhou, Xin-Li; Lu, Ming] Nanjing Univ Sci & Technol, Sch Chem Engn, Nanjing 210094, Jiangsu, Peoples R China in 2020, Cited 54. The Name is 1,4-Dioxa-8-azaspiro[4.5]decane. Through research, I have a further understanding and discovery of 177-11-7. Product Details of 177-11-7

An acid-free N-nitrosation/nitration of the N-H bonds in secondary amines with Fe(NO3)(3)center dot 9H(2)O as the nitroso/nitro source through an electrocatalyzed radical coupling reaction was developed. Cyclic aliphatic amines and N-heteroaromatic compounds were N-nitrosated and N-nitrated, respectively, under mild conditions. Control and competition experiments, as well as kinetic studies, demonstrate that N-nitrosation and N-nitration involve two different radical reaction pathways involving N+ and N-center dot radicals. Moreover, the electrocatalysis method enables the preferential activation of the N-H bond over the electrode and thus provides high selectivity for specific N atoms. Finally, this strategy exhibits a broad scope and provides a green and straightforward approach to generate useful N-nitroso/nitro compounds in good yields.

Product Details of 177-11-7. Welcome to talk about 177-11-7, If you have any questions, you can contact Zhao, JP; Ding, LJ; Wang, PC; Liu, Y; Huang, MJ; Zhou, XL; Lu, M or send Email.

Reference：
Piperidine – Wikipedia,
Piperidine | C5H7510N – PubChem