Author: Jessica.F

Jankins, Tanner C. published the artcileLow-valent tungsten redox catalysis enables controlled isomerization and carbonylative functionalization of alkenes, Name: Picolinonitrile, the main research area is pyrrolidine dione preparation regioselective; alkene carbon monoxide isomerization hydrocarbonylation tungsten catalyst.

The simple W(0) precatalyst W(CO)6 catalyzed the isomerization of alkenes RNHC(O)R1 [R = pyridin-2-ylmethyl, benzyl, quinolin-8-yl, etc; R1 = but-3-en-1-yl, 3-methylidenecyclobutyl, (3Z)-4-(4-bromophenyl)but-3-en-1-yl, etc.] to inactivated internal positions and subsequent hydrocarbonylation with CO were reported. The six- to seven-coordinate geometry changes that are characteristic of the W(0)/W(II) redox cycle and the conformationally flexible directing group are key factors in allowing isomerization to take place over multiple positions and stop at a defined inactivated internal site that is primed for in situ functionalization.

Nature Chemistry published new progress about Carbonylation catalysts, reductive (regioselective). 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Name: Picolinonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Moore, Jared T. published the artcileCatalytic alkene cyclization reactions for the stereoselective synthesis of complex “”terpenoid-like”” heterocycles, Formula: C9H9NO2, the main research area is terpenoid like heterocyclic compound preparation stereoselective synthesis.

A new catalytic synthesis of densely substituted tetrahydroquinoline derivatives is described. This reaction forms up to two rings, three bonds and three stereogenic centers with excellent stereocontrol and regiocontrol in a single step. Although control experiments demonstrate that the active catalyst is protic acid, Sc(OTf)3 serves as an effective and practical pre-catalyst. The scope of this reaction is demonstrated with cyclization reactions and bicyclization reactions. The synthesis of the target compounds (terpenoid derivatives) was achieved using geraniol derivatives as intermediates. The title compounds thus formed included a quinoline thioether derivative (I) and an isoquinoline derivative (II) and related substances, such as selenium ether derivatives

Chemical Science published new progress about Bicyclic compounds Role: SPN (Synthetic Preparation), PREP (Preparation). 5653-62-3 belongs to class nitriles-buliding-blocks, name is 2,3-Dimethoxybenzonitrile, and the molecular formula is C9H9NO2, Formula: C9H9NO2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Qi, Jing published the artcileNew Radical Borylation Pathways for Organoboron Synthesis Enabled by Photoredox Catalysis, Name: Phthalonitrile, the main research area is organoboron preparation photoredox catalysis mechanism electron transfer calculation borylation; crystal structure mol cyanoaryl boronate preparation; radical borylation photoredox catalysis; N-heterocyclic carbenes; borylations; organoborons; photocatalysis; radicals.

Radical borylation using N-heterocyclic carbene (NHC)-BH3 complexes as boryl radical precursors has emerged as an important synthetic tool for organoboron assembly. However, the majority of reported methods are limited to reaction modes involving carbo- and/or hydroboration of specific alkenes and alkynes. Moreover, the generation of NHC-boryl radicals relies principally on hydrogen atom abstraction with the aid of radical initiators. A distinct radical generation method is reported, as well as the reaction pathways of NHC-boryl radicals enabled by photoredox catalysis. NHC-boryl radicals are generated via a single-electron oxidation and subsequently undergo cross-coupling with the in-situ-generated radical anions to yield gem-difluoroallylboronates. A photoredox-catalyzed radical arylboration reaction of alkenes was achieved using cyanoarenes as arylating components from which elaborated organoborons were accessed. Mechanistic studies verified the oxidative formation of NHC-boryl radicals through a single-electron-transfer pathway.

Angewandte Chemie, International Edition published new progress about Aromatic nitriles Role: RCT (Reactant), RACT (Reactant or Reagent). 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Name: Phthalonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Tathe, Akash G. published the artcileGold-Catalyzed 1,2-Aminoarylation of Alkenes with External Amines, Synthetic Route of 1885-29-6, the main research area is aminochroman preparation gold catalyzed aminoarylation alkene external amine; amino tetrahydronaphthalene preparation gold catalyzed aminoarylation alkene external amine; aminoindane preparation gold catalyzed aminoarylation alkene external amine.

Reported herein is the gold-catalyzed 1,2-aminoarylation of alkenes that engages external amine as a coupling partner. Careful optimization studies revealed a significant role of the concentration of base to achieve highly chemoselective access to the aminoarylation products over potential C-N cross-coupled products. Overcoming all the limitations, the current strategy provided straightforward access to the medicinally relevant 3-aminochroman, 2-aminotetrahydronaphthalene, and 2-aminoindane derivatives

ACS Catalysis published new progress about Allylation. 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Synthetic Route of 1885-29-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Garcia-Vazquez, Rocio published the artcileDirect Cu-mediated aromatic 18F-labeling of highly reactive tetrazines for pretargeted bioorthogonal PET imaging, COA of Formula: C8H8N2O, the main research area is fluoro isotope labeled aryl tetrazine preparation PET imaging.

In this work, a simple, scalable and reliable direct 18F-labeling procedure was developed. Initially the applicability of different leaving groups and labeling methods was studied to develop this procedure. The copper-mediated 18F-labeling exploiting stannane precursors showed the most promising results. This approach was then successfully applied to a set of tetrazines, including highly reactive H-tetrazines, suitable for pretargeted PET imaging. The labeling succeeded in radiochem. yields (RCYs) of up to approx. 25%. The new procedure was then applied to develop a pretargeting tetrazine-based imaging agent. The tracer was synthesized in a satisfactory RCY of ca. 10%, with a molar activity of 134 ± 22 GBq μmol-1 and a radiochem. purity of >99%. Further evaluation showed that the tracer displayed favorable characteristics (target-to-background ratios and clearance) that may qualify it for future clin. translation.

Chemical Science published new progress about Positron emission tomography. 269411-71-4 belongs to class nitriles-buliding-blocks, name is 3-Amino-5-methoxybenzonitrile, and the molecular formula is C8H8N2O, COA of Formula: C8H8N2O.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Garcia-Vazquez, Rocio published the artcileDirect Cu-mediated aromatic 18F-labeling of highly reactive tetrazines for pretargeted bioorthogonal PET imaging, Application of Picolinonitrile, the main research area is fluoro isotope labeled aryl tetrazine preparation PET imaging.

In this work, a simple, scalable and reliable direct 18F-labeling procedure was developed. Initially the applicability of different leaving groups and labeling methods was studied to develop this procedure. The copper-mediated 18F-labeling exploiting stannane precursors showed the most promising results. This approach was then successfully applied to a set of tetrazines, including highly reactive H-tetrazines, suitable for pretargeted PET imaging. The labeling succeeded in radiochem. yields (RCYs) of up to approx. 25%. The new procedure was then applied to develop a pretargeting tetrazine-based imaging agent. The tracer was synthesized in a satisfactory RCY of ca. 10%, with a molar activity of 134 ± 22 GBq μmol-1 and a radiochem. purity of >99%. Further evaluation showed that the tracer displayed favorable characteristics (target-to-background ratios and clearance) that may qualify it for future clin. translation.

Chemical Science published new progress about Positron emission tomography. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Application of Picolinonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Zhang, Zhen published the artcileK2S2O8/I2-Promoted Electrophilic Selenylative Cyclization To Access Seleno-Benzo[b]azepines, Application of 2-Aminobenzonitrile(Flakes or Chunks), the main research area is selenobenzoazepine preparation regioselective; allylphenylvinylaniline diselenide selenylative cyclization.

A novel and simple organoselenium-involved 7-membered cyclization to access diverse seleno-benzo[b]azepines has been developed. This protocol involves an electrophilic cyclization process and is accomplished under mild conditions. Discussion of the mechanism rationalizes the regioselectivity observed in transformation. The studies of further transformation of seleno-benzo[b]azepines and large-scale experiment reveal the promising utility of this methodol.

Organic Letters published new progress about Benzenesulfonamides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Application of 2-Aminobenzonitrile(Flakes or Chunks).

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Xiong, Biquan published the artcileSilver-catalyzed regioselective 1,6-hydroarylation of para-quinone methides with anilines and phenols, Related Products of nitriles-buliding-blocks, the main research area is alpha diarylmethyl aniline phenol preparation regioselective; para quinone methide aniline phenol hydroarylation silver catalyst.

A simple and efficient method for the silver-catalyzed regioselective 1,6-hydroarylation of para-quinone methides (p-QMs) with anilines and phenols has been established. Without the need for pre-protection, a broad range of anilines (primary amine, secondary amine and tertiary amine), phenols and para-quinone methides are well tolerated under mild conditions, giving the corresponding 1,6-hydroarylation products with moderate to good yields. Moreover, a series of modified natural products can be synthesized via this simple method. Control experiments were also performed to gain insights into the plausible reaction mechanism. This protocol has high atom economy, and may have significant implications for the formation of C(sp3)-C(sp2) bonds in organic synthesis.

Organic Chemistry Frontiers published new progress about Hydroarylation. 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Related Products of nitriles-buliding-blocks.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Pramanik, Sourav published the artcileAccess to densely functionalized spirocyclopentenonyl oxindole frameworks via aza- and carbo-Piancatelli rearrangement, Quality Control of 1885-29-6, the main research area is spirocyclopentenonyl oxindole preparation phosphomolybdic acid catalyst; furanyl indolinone aniline Piancatelli rearrangement.

A new strategy for access to spirocyclopentenonyl oxindole frameworks is disclosed. Suitably anchored furfuryl alc. at C3 of an oxindole was used for the aza-Piancatelli rearrangement, which furnished spirocyclic aminocyclopentenone frameworks with catalytic phosphomolybdic acid. The scope of the transformation was extended to the carbo-Piancatelli rearrangement with various indole derivatives

Organic & Biomolecular Chemistry published new progress about Furans Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Quality Control of 1885-29-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Dass, Reuben published the artcileAn efficient synthesis of 4-Thiocyanato anilines using benzyltrimethylammonium dichloroiodate and ammonium thiocyanate in DMSO:H2O, Related Products of nitriles-buliding-blocks, the main research area is thiocyanatoaniline preparation; aniline ammonium thiocyanate thiocyanation.

Treatment of a variety of 2(3)-mono-substituted anilines with benzyltrimethylammonium dichloroiodate (1.2 equiv) and ammonium thiocyanate (1.2 equiv) in DMSO:H2O (9:1) at 70°C gave the corresponding 4-thiocyanato-2(3)-substituted anilines ArSC≡N [Ar = 4-OH-3-MeC6H3, 4-NH2-3-BrC6H3, 3-isoquinolyl, etc.] in excellent isolated yields (60-99%; ave. yield for all anilines = 90%). The reaction worked well for substrates with 2-halo, 2-alkoxy, 2-aryloxy, 2-alkyl, 2-dialkylamino, 2-N-sulfonylamino, 2-alkyn-1-yl, 2-cyano, 2-acyl, 2-sulfonyl, and 2-heteroaryl substitution. 3-Substituted, 3,5- or 2,6-disubstituted anilines and substituted phenols were also well tolerated. 4-Substituted anilines gave the corresponding 2-aminobenzothiazole products ArSC≡N, whereas 4-, 5-, 6-, or 7-substituted indoles were not reactive. Regioselective thiocyanation of 2-quinoline, 3-amino-1-methylpyrazole, 2-amino-4-phenylthiazole, and 2-phenylimidazo[1,2-a] pyridine was achieved in 93-99% yield, thus demonstrating the broad-substrate scope for this thiocyanation reaction.

Tetrahedron Letters published new progress about Cyanation catalysts, thiocyanation. 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Related Products of nitriles-buliding-blocks.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts