Category: 3893-18-3

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

Zhang, Kaiheng; Deiana, Luca; Grape, Erik Svensson; Inge, A. Ken; Cordova, Armando published the artcile< Catalytic Enantioselective Synthesis of Bicyclic Lactam N,S-Acetals in One Pot by Cascade Transformations>, SDS of cas: 3893-18-3, the main research area is bicyclic lactam acetal enantioselective preparation.

A versatile strategy for the enantioselective synthesis of bicyclic lactam N,S-acetals by one-pot cascade transformations is disclosed. The transformation of readily available substrates is promoted by chiral amines and creates bicyclic or tricyclic lactam N,S-acetals with high chemo- and stereoselectivity (up to > 99.5:0.5 dr and > 99 % ee) in one-pot operations.

European Journal of Organic Chemistry published new progress about Acetals, cyclic Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation). 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, SDS of cas: 3893-18-3.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Dai, Xiao-Yang; Wu, Xiao-Yu; Fang, Hui-Hui; Nie, Lin-Lin; Chen, Jie; Deng, Hong-Mei; Cao, Wei-Guo; Zhao, Gang published the artcile< Enantioselective organocatalyzed cascade reactions to highly functionalized quinolizidines>, Formula: C9H7BrO, the main research area is enantioselective synthesis indoloquinolizidine benzoquinolizidine Michael addition Pictet Spengler; ketoamide unsaturated aldehyde enantioselective Michael addition Pictet Spengler organocalalyst.

An organocatalyzed one-pot Michael addition-Pictet-Spengler sequence of β-ketoamides and α,β-unsaturated aldehydes was developed, which provided access to highly substituted indolo[2,3-α]quinolizidines and benzo[α]quinolizidines in moderate to good yields and good to excellent enantioselectivity. For aromatic α,β-unsaturated aldehydes products containing a stable enol configuration, e.g. I were obtained.

Tetrahedron published new progress about Amides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation) (β-ketoamides). 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Formula: C9H7BrO.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Gotoh, Hiroaki; Hayashi, Yujiro published the artcile< Diarylprolinol Silyl Ether as Catalyst of an exo-Selective, Enantioselective Diels-Alder Reaction>, COA of Formula: C9H7BrO, the main research area is aldehyde unsaturated enantioselective Diels Alder reaction catalytic; pyrrolidine siloxy fluoroacetic acid enantioselective Diels Alder catalyst aldehyde; bicycloheptaenecarboxaldehyde Diels Alder preparation; cyclohexenealdehyde Diels Alder preparation.

In combined use with CF3CO2H, 2-[bis(3,5-bis-trifluoromethylphenyl)triethylsiloxymethyl]pyrrolidine is an effective organocatalyst of an exo-selective, enantioselective Diels-Alder reaction of α,β-unsaturated aldehydes.

Organic Letters published new progress about Diels-Alder reaction catalysts, stereoselective. 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, COA of Formula: C9H7BrO.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Thanikachalam, Venugopal; Jeeva, Palanivel; Jayabharathi, Jayaraman; Ramanathan, Periyasamy; Prabhakaran, Annadurai; Saroj Purani, Elayaperumal published the artcile< Nondoped Blue Organic Light Emitting Devices with Donor-π-Acceptor Derivatives as the Emissive Material>, Formula: C9H7BrO, the main research area is blue organic light emitting device MO photoluminescence solvent polarity.

Blue emitting devices based on donor-linker-acceptor geometry such as p-methoxynaphthylphenanthroimidazole-phenyl-phenylbenzenamine (TPA-MPI) and p-methoxynaphthylphenanthroimidazole-styryl-phenylbenzenamine (TPA-MPS) were synthesized and characterized. Due to the rigid mol. backbone composed of phenanthro[9,10-d]imidazole (acceptor), Ph (TPA-MPI) and styryl (TPA-MPS) spacers, and triphenylamine (donor), these compounds exhibit good thermal stability. The nondoped device based on TAP-MPS exhibits higher efficiencies, 1.73 cd A-1 (ηc), 1.46 lm W-1 (ηp), and 2.11% (ηex). The higher efficiency is attributed to the coemission from the intercrossed excited state of the emissive layer.

Industrial & Engineering Chemistry Research published new progress about Band gap. 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Formula: C9H7BrO.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Zhang, Baohua; Shi, Lanxiang published the artcile< Asymmetric Henry condensation catalyzed by ionic liquid-supported proline>, HPLC of Formula: 3893-18-3, the main research area is asym Henry condensation proline ionic liquid.

A functionalized ionic liquid-supported proline, 1-methyl-3-{2-[(2S)-pyrrolidine-2-carbonyloxy]-ethyl}-1H-imidazol-3-ium trifluoromethylcarbonate([Promim]CF3CO2), was used to catalyze the Henry condensation reaction of aldehydes with CH3CH2NO2 or CH3NO2. The desired products were obtained in 79%-95% yields, diastereomeric excess and enantiomeric excess was up to 3 : 1 and 85% under relatively mild conditions. [Promim] CF3CO2 could be efficiently recycled six times without the decrease of catalytic activity in the condensation reaction of 4-nitrobenzaldehyde and CH3CH2NO2. [Promim] CF3CO2 could be efficiently recycled six times without the decrease of catalytic activity in the condensation reaction of 4-nitrobenzaldehyde and CH3CH2NO2.

Yingyong Huaxue published new progress about Catalyst supports. 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, HPLC of Formula: 3893-18-3.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Venugopal, Thanikachalam; Palanivel, Jeeva; Jayaraman, Jayabharathi published the artcile< Nondoped blue fluorescent OLED based on cyanophenanthrimidazole-styryl-triphenylamine/carbazole materials>, SDS of cas: 3893-18-3, the main research area is cyano phenanthrimidazole styryl phenylamine carbazole fluorescent blue organic LED.

New 2-(4′-(9H-carbazole-9-yl)-styryl-1H-phenathro[9,10-d]imidazole-1-yl)benzonitrile (SPICN-Cz) and 4-(2-(4-(diphenylamino)phenyl-styryl)-1H-phenathro[9,10-d]imidazole-1-yl)benzonitrile (SPICN-TPA) were synthesized, and their photophys., electrochem., and electroluminescent properties were analyzed in comparison with their cyano-free parent compounds, SPI-Cz, and SPI-TPA. Solvatochromic effects show the transformation of an excited state character from locally excited (LE) state to charge transfer (CT) state. Using time-dependent d. functional theory calculation, the excited state properties of these donor-acceptor blue emissive materials were analyzed. Their excited state properties were tuned by replacing the strong donor triphenylamine to weak donor carbazole to achieve the combination of high photoluminance efficiency locally excited (LE) component and high exciton-using CT component in 1 excited state. Hybridization processes between LE and CT components of SPICN-Cz and SPICN-TPA in the emissive state were discussed. The nondoped organic light emitting diode device based on SPICN-Cz exhibit better electroluminescent performances than those of SPICN-TPA-based device: high external quantum efficiency of 2.58 %, current efficiency of 2.90 cd A-1, and power efficiency of 2.26 lm W-1 with Commission Internationale de l’Eclairage (CIE) coordinates of (0.15, 0.12). The excited state modulation and the composition of LE and CT states in the donor-acceptor system could be useful to design low-cost, high-efficiency fluorescent organic light emitting diode materials.

Journal of Physical Organic Chemistry published new progress about Blue-emitting electroluminescent devices. 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, SDS of cas: 3893-18-3.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Meazza, Marta; Sitinova, Gabriela; Poderi, Cecilia; Mancinelli, Michele; Zhang, Kaiheng; Mazzanti, Andrea; Torres, Ramon Rios published the artcile< Synergistic Catalysis: Highly Enantioselective Acetyl Aza-arene Addition to Enals>, Application In Synthesis of 3893-18-3, the main research area is synergistic catalysis enantioselective addition acetyl aza arene enal; Michael addition; acetyl aza-arenes; enals; secondary amine catalysis; synergistic catalysis.

A novel catalytic enantioselective methodol. based on synergistic catalysis for the synthesis of chiral 2-acyl pyridines and pyrazines is reported. The strategy involves the metal-Lewis acid activation of acetyl aza-arenes and the secondary-amine activation of enals. The proposed mechanism is supported by DFT calculations

Chemistry – A European Journal published new progress about Addition reaction, stereoselective. 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Application In Synthesis of 3893-18-3.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wang, Zhaofeng; Zhao, Kun; Fu, Junkai; Zhang, Junlin; Yin, Weiyu; Tang, Yefeng published the artcile< Organocatalytic 1,4-conjugate addition of ascorbic acid to α,β-unsaturated aldehydes: bio-inspired total syntheses of leucodrin, leudrin and proposed structure of dilaspirolactone>, Quality Control of 3893-18-3, the main research area is crystal mol structure spirodilactone core ascorbylated natural product; leucodrin leudrin preparation ascorbylated natural product.

The organocatalytic additions of ascorbic acid to various α,β-unsaturated aldehydes via tandem 1,4-conjugate addition/hemiacetalization/hemiketalization were developed, which provided a rapid entry into the 5-5-5 spirodilactone cores of a family of ascorbylated natural products. Based on the described chem., total syntheses of leucodrin, leudrin and the proposed structure of dilaspirolactone were achieved.

Organic & Biomolecular Chemistry published new progress about Acetalization (hemi). 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Quality Control of 3893-18-3.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary