Category: bromides-buliding-blocks

Yan, Gang; Zekarias, Bereket L.; Li, Xiaoyu; Jaffett, Victor A.; Guzei, Ilia A.; Golden, Jennifer E. published the artcile< Divergent 2-Chloroquinazolin-4(3H)-one Rearrangement: Twisted-Cyclic Guanidine Formation or Ring-Fused N-Acylguanidines via a Domino Process>, COA of Formula: C7H6BrNO2, the main research area is chloroquinazolinone preparation; diamine tandem rearrangement heterocyclization; domino; guanidine; quinazolinone; rearrangement; twisted guanidine.

A highly efficient 2-chloroquinazolin-4(3H)-one rearrangement was developed that predictably generated either twisted-cyclic or ring-fused guanidines in a single operation, depending on the presence of a primary vs. secondary amine in the accompanying diamine reagent. Exclusive formation of twisted-cyclic guanidines results from pairing 2-chloroquinazolinones with secondary diamines. Use of primary amine-containing diamines permited a domino quinazolinone rearrangement/intramol. cyclization gated through (E)-twisted-cyclic guanidines to afford ring-fused N-acylguanidines. This scalable, structurally tolerant transformation generated 55 guanidines and delivered twisted-cyclic guanidines with robust plasma stability and an abbreviated total synthesis of an antitumor ring-fused guanidine (4 steps, 55% yield).

Chemistry – A European Journal published new progress about Carboxylic acids Role: RCT (Reactant), RACT (Reactant or Reagent). 20776-50-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H6BrNO2, COA of Formula: C7H6BrNO2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Bao, Lan; Liu, Yu; Peng, Jinghan; Wang, Yuan; Dong, Jinhuan; Xu, Xianxiu published the artcile< Chemoselective Trimerization of Isocyanides: De Novo Synthesis of 2-Indole-Substituted Quinolines and Pyridines>, Name: 3-(4-Bromophenyl)acrylaldehyde, the main research area is indolylquinoline preparation chemoselective; indolylpyridine preparation chemoselective; isocyanide tandem trimerization reaction.

A catalyst-free chemoselective trimerization reaction of readily available isocyanides 2-NC-4-R-5-R1C6H2C(R2)=CH2 (R = H, OMe; R1 = H, OMe, Cl; R2 = H, CF3, Ph, 4-fluorophenyl, 4-methoxyphenyl), R3CH=CH-CH=C(R4)NC (R3 = C(O)OEt, Ts; R4 = Ph, 4-bromophenyl, 4-methoxyphenyl), 2-R5-3-R6-4-R7-5-R8C6HNC (R5 = H, Me; R6 = H, OMe, Me; R5R6 = -CH=CH-CH=CH-; R7 = H, Me, Br, C(O)Ph, etc.; R6R7 = -CH=CH-CH=CH-; R8 = H, Me, OMe) and 3-isocyanothiophene is described. This domino reaction provides facile access to a wide range of 2-(indol-2-yl)-quinolines I, II and 2-(indol-2-yl)-pyridines III in moderate to excellent yields. A “”head to head”” heterodimerization of two isocyanides is proposed as the key step of this reaction.

Organic Letters published new progress about Chemoselectivity. 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Name: 3-(4-Bromophenyl)acrylaldehyde.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Chen, Kun-Quan; Gao, Zhong-Hua; Ye, Song published the artcile< Bifunctional N-heterocyclic carbene catalyzed [3 + 4] annulation of enals with azadienes: enantioselective synthesis of benzofuroazepinones>, Formula: C9H7BrO, the main research area is benzofuroazepinone enantioselective preparation heterocyclic carbene catalyzed; aurone derived azadiene acyclic enal annulation.

The bifunctional N-heterocyclic carbene catalyzed [3 + 4] annulation of acyclic enals with aurone-derived azadienes was reported. The challenging β,β-disubstituted enals and β-monosubstituted enals reacted well to afford the corresponding benzofuroazepinones I ( R= Me, Ph, 4-ClC6H4, 3-MeC6H4, etc; Ar = Ph, 4-FC6H4, 2-thiophenyl, etc) in good yields with excellent stereoselectivities. The bifunctional carbene with a free hydroxy group is the key factor for success.

Organic Chemistry Frontiers published new progress about Azepines Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation) (benzofuroazepinones). 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Formula: C9H7BrO.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Liu, Yanan; Ji, Kaihui; Wang, Jing; Li, Huafeng; Zhu, Xueyu; Ma, Pengtao; Niu, Jingyang; Wang, Jingping published the artcile< Enhanced Carrier Separation in Visible-Light-Responsive Polyoxometalate-Based Metal-Organic Frameworks for Highly Efficient Oxidative Coupling of Amines>, Computed Properties of 3959-07-7, the main research area is visible light responsive polyoxometalate metal organic framework photocatalyst; amine oxidative coupling; POM-based metal−organic frameworks; oxidative coupling of amines; photocatalytic; photosensitizers; polyoxometalates.

Photocatalytic technol. is widely studied, while it comes with drawbacks such as low sunlight utilization efficiency and high carrier recombination rates. Herein, for the first time, we present two crystalline polyoxometalate (POM)-based metal-organic frameworks (POMOFs), {[Cd(DMF)2Ru(bpy)2(dcbpy)]2(POMs)(DMF)2} xDMF (PMo-1, POMs = [PMoVI11MoVO40]4-, x = 5; SiW-2, POMs = [SiW12O40]4-, x = 4) through assembling the photosensitizer [Ru(bpy)2(H2dcbpy)]Cl2 and POMs into a single framework. The assembly not only enhances light absorption in the visible light regime but also improves carrier separation efficiency; atop of that, both POMOFs demonstrate activities in the photocatalytic oxidative coupling of amines. Particularly, PMo-1 enables the quant. completion of oxidative coupling of benzylamine reaction within 30 min (yield = 99.6%) with a high turnover frequency (TOF = 6631.6 h-1). To our knowledge, the PMo-1 catalyst outperforms any other photocatalysts previously reported in similar use cases where TOF values were usually obtained <2000 h-1. ACS Applied Materials & Interfaces published new progress about Aralkyl amines Role: RCT (Reactant), RACT (Reactant or Reagent). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Computed Properties of 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Bernard, Alimenla; Kumar, Anil; Jamir, Latonglila; Sinha, Dipak; Sinha, Upasana Bora published the artcile< An efficient microwave-induced solvent-free organic bromination using tetrabutylammonium tribromide>, Reference of 16426-64-5, the main research area is arene bromination tetrabutylammonium tribromide microwave irradiation solventless; bromo arene preparation; organic substrate bromination tetrabutylammonium tribromide microwave irradiation solventless; brominated compound preparation; tetrabutylammonium tribromide solventless bromination reagent; microwave irradiation solventless bromination mediator.

Microwave-induced solvent-free brominations of organic substrates have been carried out with tetrabutylammonium tribromide, (C4H9)4N+(Br3-). Reaction procedure was facile, affording products in high yields within very short reaction times.

Acta Chimica Slovenica published new progress about Aromatic hydrocarbons Role: RCT (Reactant), RACT (Reactant or Reagent). 16426-64-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H4BrNO4, Reference of 16426-64-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Buckle, Derek R.; Morgan, Neil J.; Ross, Janet W.; Smith, Harry; Spicer, Barbara A. published the artcile< Antiallergic activity of 2-nitroindan-1,3-diones>, Application In Synthesis of 82-73-5, the main research area is nitro indandione antiallergic.

Of 26 2-nitroindan-1,3-diones prepared, 2-nitroindan-1,3-dione (I) [3674-33-7] showed an activity close to that of disodium cromoglycate [15826-37-6] while 5,6-dimethyl-2-nitroindan-1,3-dione (II) [49561-92-4] and 2-nitrobenz[f]indan-1,3-dione (III) [49561-93-5] showed a marked increase in antiallergic activity as measured by the homocytotropic antibody-antigen induced passive cutaneous anaphylaxis reaction in the rat. The prepn of the 1,3-indandione nucleus was achieved by 3 routes, all procedures necessitating the appropriately substituted phthalate precursors which were obtained through a variety of synthetic methods.

Journal of Medicinal Chemistry published new progress about Antihistamines. 82-73-5 belongs to class bromides-buliding-blocks, and the molecular formula is C8H3BrO3, Application In Synthesis of 82-73-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Fernandez, Ariadna; Diaz, Jose Luis; Garcia, Monica; Rodriguez-Escrich, Sergi; Lorente, Adriana; Enrech, Raquel; Dordal, Albert; Portillo-Salido, Enrique; Porras, Monica; Fernandez, Begona; Reinoso, Raquel F.; Vela, Jose Miguel; Almansa, Carmen published the artcile< Piperazinyl Bicyclic Derivatives as Selective Ligands of the α2δ-1 Subunit of Voltage-Gated Calcium Channels>, Application of C7H6BrNO2, the main research area is piperazinyl quinazolinone preparation calcium channel.

The synthesis and pharmacol. activities of a new series of piperazinyl quinazolin-4-(3H)-one derivatives I [R1 = H, 5-Br, 6-(4-pyridinyl), 8-Br, etc.; R2 = 2-methoxyethyl, benzyl, 2-furylmethyl, etc.; R3 = H, Me, Pr, n-Bu, etc.; R4 = piperazin-1-yl, (3R,5S)-3,5-dimethylpiperazin-1-yl, (S)-3-methylpiperazin-1-yl, etc.] acting toward the α2δ-1 subunit of voltage-gated calcium channels (Cavα2δ-1) were reported. Different positions of a micromolar HTS hit were explored, and best activities were obtained for compounds I containing a small alkyl group in position 3 of the quinazolin-4-(3H)-one scaffold and a 3-methyl-piperazin-1-yl- or 3,5-dimethyl-piperazin-1-yl-Bu group in position 2. The activity was shown to reside in the R enantiomer of the chain in position 2, and several eutomers reached single digit nanomolar affinities. Final modification of the central scaffold to reduce lipophilicity provided the pyrido[4,3-d]pyrimidin-4(3H)-one II, which showed high selectivity for Cavα2δ-1 vs. Cavα2δ-2, probably linked to its improved analgesic efficacy-safety ratio in mice over pregabalin.

ACS Medicinal Chemistry Letters published new progress about Acid chlorides Role: RCT (Reactant), RACT (Reactant or Reagent). 20776-50-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H6BrNO2, Application of C7H6BrNO2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Tahir, Norini; Muniz-Miranda, Francesco; Everaert, Jonas; Tack, Pieter; Heugebaert, Thomas; Leus, Karen; Vincze, Laszlo; Stevens, Christian V.; Van Speybroeck, Veronique; Van Der Voort, Pascal published the artcile< Immobilization of Ir(I) complex on covalent triazine frameworks for C-H borylation reactions: A combined experimental and computational study>, Recommanded Product: 3-Bromobenzotrifluoride, the main research area is covalent triazine framework preparation carbon hydrogen borylation computational exptl.

Metal-modified covalent triazine frameworks (CTFs) have attracted considerable attention in heterogeneous catalysis due to their strong nitrogen-metal interactions exhibiting superior activity, stability and hence recyclability. Herein, authors report on a post-metalation of a bipyridine-based CTFs with an Ir(I) complex for C-H borylation of aromatic compounds Phys. characterization of the Ir(I)-based bipyCTF catalyst in combination with d. functional theory (DFT) calculations exhibit a high stabilization energy of the Ir-bipy moiety in the frameworks in the presence of B2Pin2. By using B2Pin2 as a boron source, Ir(I)@bipyCTF efficiently catalyzed the C-H borylation of various aromatic compounds with excellent activity and good recyclability. In addition, XAS anal. of the Ir(I)@bipyCTF gave clear evidence for the coordination environment of the Ir.

Journal of Catalysis published new progress about Borylation. 401-78-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H4BrF3, Recommanded Product: 3-Bromobenzotrifluoride.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Guo, Cui; Huang, Kanglun; Wang, Bo; Xie, Longguang; Xu, Xiaohua published the artcile< Palladium-catalyzed annulation reactions of methyl o-halobenzoates with azabicyclic alkenes: a general protocol for the construction of benzo[c]phenanthridine derivatives>, COA of Formula: C8H6BrFO2, the main research area is benzophenanthridine preparation palladium catalysis annulation methyl halobenzoate azabicyclic alkene.

The annulation reaction of Me o-halobenzoates with azabicyclic alkenes proceeds efficiently to give the corresponding benzo[c]phenanthridine derivatives in good to excellent yields using a developed base-free methodol. based on our preliminary studies. Thirty-seven application examples validate the compatibility of the present strategy with different groups, particularly with the electron-deficient ones, that are difficult to access using other traditional methods. In addition, annulation reactions with non-sym. azabicyclic alkenes are achieved in high regioselectivity.

RSC Advances published new progress about Cyclization. 6942-39-8 belongs to class bromides-buliding-blocks, and the molecular formula is C8H6BrFO2, COA of Formula: C8H6BrFO2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Rupanawar, Bapurao D.; Veetil, Sruthi M.; Suryavanshi, Gurunath published the artcile< Oxidative Olefination of Benzylamine with an Active Methylene Compound Mediated by Hypervalent Iodine (III)>, HPLC of Formula: 3959-07-7, the main research area is oxidative olefination benzylamine active methylene compound; olefination mediated hypervalent iodine.

Hypervalent iodine-mediated oxidative olefination of amines with an active methylene compound provides a rapid gateway towards the formation of electrophilic alkenes under mild reaction conditions in good to excellent yields. This is an efficient protocol for the preparation of substituted electrophilic alkenes.

European Journal of Organic Chemistry published new progress about Alkenes Role: SPN (Synthetic Preparation), PREP (Preparation). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, HPLC of Formula: 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary