Author: Jessica.F

Xu, Jun; Peng, Chao; Yao, Bolin; Xu, Hua-Jian; Xie, Qiang published the artcile< Direct Deoxyfluorination of Alcohols with KF as Fluorine Source>, Quality Control of 52244-70-9, the main research area is triflate preparation; alc direct deoxyfluorination potassium fluoride transition metal free.

This report described a method for the deoxyfluorination of alcs. with KF as fluorine source via in situ generation of highly active CF3SO2F. Diverse functionalities including halogen, nitro, ketone, ester, alkene and alkyne are well tolerated. Mild condition, short reaction time and wide substrate scope enable this method an excellent choice for the construction of C-F bonds.

Journal of Organic Chemistry published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, Quality Control of 52244-70-9.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Bach, Anders; Pizzirani, Daniela; Realini, Natalia; Vozella, Valentina; Russo, Debora; Penna, Ilaria; Melzig, Laurin; Scarpelli, Rita; Piomelli, Daniele published the artcile< Benzoxazolone Carboxamides as Potent Acid Ceramidase Inhibitors: Synthesis and Structure-Activity Relationship (SAR) Studies>, SDS of cas: 52244-70-9, the main research area is benzoxazolone carboxamide preparation SAR acid ceramidase inhibitory anticancer.

Ceramides are lipid-derived intracellular messengers involved in the control of senescence, inflammation, and apoptosis. The cysteine amidase, acid ceramidase (AC), hydrolyzes these substances into sphingosine and fatty acid and, by doing so, regulates their signaling activity. AC inhibitors may be useful in the treatment of pathol. conditions, such as cancer, in which ceramide levels are abnormally reduced. Here, we present a systematic SAR investigation of the benzoxazolone carboxamides, a recently described class of AC inhibitors that display high potency and systemic activity in mice. We examined a diverse series of substitutions on both benzoxazolone ring and carboxamide side chain. Several modifications enhanced potency and stability, and one key compound with a balanced activity-stability profile I was found to inhibit AC activity in mouse lungs and cerebral cortex after systemic administration. The results expand our arsenal of AC inhibitors, thereby facilitating the use of these compounds as pharmacol. tools and their potential development as drug leads.

Journal of Medicinal Chemistry published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, SDS of cas: 52244-70-9.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Flippin, Lee A.; Berger, Jacob; Parnes, Jason S.; Gudiksen, Mark S. published the artcile< Effect of the Substitution Pattern on Reactions of Methoxylated Araldehyde 2,4-Dimethyl-3-pentylimines with Organolithium Reagents>, Recommanded Product: 3-Methoxy-2-methylbenzaldehyde, the main research area is methoxyphenylmethylenepentanamine butylation phenylation; substitution effect lithiation araldehyde methylpentylimine; metalation regioselective araldimine; imine methoxybenzaldehyde lithiation substitution effect.

Araldehyde imines, e.g., N-[(methoxyphenyl)methylene]dimethyl-3-pentanamines I (R, R1, R2 = H, OMe) reacted with BuLi via facile nucleophilic aromatic substitution to give benzaldehydes II. Exceptions to this trend were observed when the araldimine substrate contained methoxy groups at both C-2 and C-5. Thus, the 2,5-dimethoxy analog of I reacted with BuLi – followed by MeI quench and acid hydrolysis – to give a complex aldehyde mixture derived from metalation and SNAr processes, e.g. 3,6-dimethoxy-2-methylbenzaldehyde and 2-butyl-5-methoxybenzaldehyde, whereas the 2,4,5-trimethoxy analog of I under identical conditions, gave exclusive metalation and electrophilic capture at C-6 to give 3,4,6-trimethoxy-2-methylbenzaldehyde in 83% yield. Araldehyde 2,4-dimethyl-3-pentylimines that cannot undergo an SNAr reaction are potential candidates for directed metalation reactions although this usage is limited by occasional unwanted side-reactions, lack of selectivity or reactivity, and unpredictability.

Journal of Organic Chemistry published new progress about Alkylation. 56724-03-9 belongs to class ethers-buliding-blocks, and the molecular formula is C9H10O2, Recommanded Product: 3-Methoxy-2-methylbenzaldehyde.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Wang, Peng; Chen, Shuqing; Zhou, Zhiyu; Cheng, Hong-Gang; Zhou, Qianghui published the artcile< Chemoselective Borono-Catellani Arylation for Unsymmetrical Biaryls Synthesis>, Quality Control of 190788-60-4, the main research area is biaryl alkene alkenoate chemoselective diastereoselective preparation; palladium norbornenedicarboxylate catalyst borono Catellani reaction; chemoselective stereoselective arylation arylpinacolboronate bromoarene alkene palladium norbornenedicarboxylate catalyst.

In the presence of Pd(OAc)2 and a norbornenedicarboxylate, arylpinacolboronates such as 2-methylphenyl pinacolboronate underwent chemoselective aerobic borono-Catellani reactions with aryl bromides such as Me 2-bromobenzoate and alkenes (including α,β-unsaturated esters) such as tert-Bu acrylate to yield unsym. biaryl alkenes such as biphenylpropenoate I. In the absence of alkene, a bromophenylcarbamate underwent coupling and cyclization with 2-naphthylpinacolboronate to yield a mixture of benzocarbazoles in 45% combined yield; a bromophenol underwent coupling without cyclization.

Organic Letters published new progress about Alkenes Role: RCT (Reactant), RACT (Reactant or Reagent). 190788-60-4 belongs to class ethers-buliding-blocks, and the molecular formula is C13H19BO3, Quality Control of 190788-60-4.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Chen, Junjun; Hua, Kaimin; Liu, Xiaofang; Deng, Yuchao; Wei, Baiyin; Wang, Hui; Sun, Yuhan published the artcile< Selective Production of Linear Aldehydes and Alcohols from Alkenes using Formic Acid as Syngas Surrogate>, Quality Control of 52244-70-9, the main research area is alkene formic acid rhodium regioselective hydroformylation catalyst; aldehyde linear preparation; formic acid alkene rhodium Shvo regioselective hydroxymethylation catalyst; alc linear preparation; formic acid; hydroformylation; hydroxymethylation; linear alcohol; tandem reaction.

Performing carbonylation without the use of carbon monoxide for high-value-added products is an attractive yet challenging topic in sustainable chem. Herein, effective methods for producing linear aldehydes or alcs. selectively with formic acid as both carbon monoxide and hydrogen source have been described. Linear-selective hydroformylation of alkenes proceeds smoothly with up to 88% yield and >30 regioselectivity in the presence of single Rh catalyst. Strikingly, introducing Ru into the system, the dual Rh/Ru catalysts accomplish efficient and regioselective hydroxymethylation in one pot. The present processes utilizing formic acid as syngas surrogate operate simply under mild condition, which opens a sustainable way for production of linear aldehydes and alcs. without the need for gas cylinders and autoclaves. As formic acid can be readily produced via CO2 hydrogenation, the protocols represent indirect approaches for chem. valorization of CO2.

Chemistry – A European Journal published new progress about Alcohols Role: SPN (Synthetic Preparation), PREP (Preparation). 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, Quality Control of 52244-70-9.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Denning, Derek M.; Pedowitz, Nichole J.; Thum, Matthew D.; Falvey, Daniel E. published the artcile< Uncaging alcohols using UV or visible light photoinduced electron transfer to 9-phenyl-9-tritylone ethers>, Safety of 4-(4-Methoxyphenyl)-1-butanol, the main research area is uncaging alc UV visible light photoinduced electron transfer; phenyl tritylone ether.

The clean and efficient photorelease of primary and secondary alcs. is reported from the deprotection of a new photoremovable protecting group, the 9-phenyltritylone (PTO) group. Deprotection is initiated by 350 nm excitation of the PTO chromophore in the presence of triethylamine or using 447 nm light in the presence of a visible light absorbing photocatalyst and triethylamine. Laser flash photolysis results are reported in support of a proposed deprotection mechanism for the release of alcs. on a ca. 20 μs time scale.

Organic Letters published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, Safety of 4-(4-Methoxyphenyl)-1-butanol.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Mhlongo, Msizi I.; Piater, Lizelle A.; Dubery, Ian A. published the artcile< Profiling of Volatile Organic Compounds from Four Plant Growth-Promoting Rhizobacteria by SPME-GC-MS: A Metabolomics Study>, Reference of 608141-42-0, the main research area is PGPR volatile organic compound metabolomics profiling SPME GCMS; metabolomics profiling; multivariate data analysis (MVDA); plant growth promoting rhizobacteria (PGPR); solid-phase micro-extraction gas chromatography mass spectrometry (SPME–GC–MS); volatile organic compounds (VOCs).

The rhizosphere microbiome is a major determinant of plant health. Plant-beneficial or plant growth-promoting rhizobacteria (PGPR) influence plant growth, plant development and adaptive responses, such as induced resistance/priming. These new eco-friendly choices have highlighted volatile organic compounds (biogenic VOCs) as a potentially inexpensive, effective and efficient substitute for the use of agrochems. Secreted bacterial VOCs are low mol. weight lipophilic compounds with a low b.p. and high vapor pressures. As such, they can act as short- or long-distance signals in the rhizosphere, affecting competing microorganisms and impacting plant health. In this study, secreted VOCs from four PGPR strains (Pseudomonas koreensis (N19), Ps. fluorescens (N04), Lysinibacillus sphaericus (T19) and Paenibacillus alvei (T22)) were profiled by solid-phase micro-extraction gas chromatog. mass spectrometry (SPME-GC-MS) combined with a multivariate data anal. Metabolomic profiling with chemometric analyses revealed novel data on the composition of the secreted VOC blends of the four PGPR strains. Of the 121 annotated metabolites, most are known as bioactives which are able to affect metabolism in plant hosts. These VOCs belong to the following classes: alcs., aldehydes, ketones, alkanes, alkenes, acids, amines, salicylic acid derivatives, pyrazines, furans, sulfides and terpenoids. The results further demonstrated the presence of species-specific and strain-specific VOCs, characterized by either the absence or presence of specific VOCs in the different strains. These mols. could be further investigated as biomarkers for the classification of an organism as a PGPR and selection for agricultural use.

Metabolites published new progress about Acids Role: ANT (Analyte), PUR (Purification or Recovery), ANST (Analytical Study), PREP (Preparation). 608141-42-0 belongs to class ethers-buliding-blocks, and the molecular formula is C12H19NO4S, Reference of 608141-42-0.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Siddiqui, Sheema; Bhawar, Ramesh; Geetharani, K. published the artcile< Iron-Based Catalyst for Borylation of Unactivated Alkyl Halides without Using Highly Basic Organometallic Reagents>, Safety of 1-Bromo-2-methoxyethane, the main research area is alkyl halide unactivated borylation catalyst iron amide complex; alkylboronate preparation borylation unactivated alkyl halide iron hexamethyldisilazide catalyst.

The mild borylation of alkyl bromides and chlorides with bis(neopentylglycolato)diborane (B2neop2) mediated by iron-bis amide is described. The reaction proceeds with a broad substrate scope and good functional group compatibility. Moreover, sufficient catalytic activity was obtained for primary and secondary alkyl halides. Mechanistic studies indicate that the reaction proceeds through a radical pathway.

Journal of Organic Chemistry published new progress about Amines Role: CAT (Catalyst Use), USES (Uses) (amido complexes). 6482-24-2 belongs to class ethers-buliding-blocks, and the molecular formula is C3H7BrO, Safety of 1-Bromo-2-methoxyethane.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Shenghur, Abraham; Weber, Kevin H.; Nguyen, Nhan D.; Sontising, Watit; Tao, Fu-Ming published the artcile< Theoretical Study of the Hydrogen Abstraction of Substituted Phenols by Nitrogen Dioxide as a Source of HONO>, Name: 2-Amino-3-methoxyphenol, the main research area is nitrogen dioxide hydrogen abstraction phenol nitrous acid formation.

The mild yet promiscuous reactions of nitrogen dioxide (NO2) and phenolic derivatives to produce nitrous acid (HONO) have been explored with d. functional theory calculations The reaction is found to occur via four distinct pathways with both proton coupled electron transfer (PCET) and hydrogen atom transfer (HAT) mechanisms available. While the parent reaction with phenol may not be significant in the gas phase, electron donating groups in the ortho and para positions facilitate the reduction of nitrogen dioxide by electronically stabilizing the product phenoxy radical. Hydrogen bonding groups in the ortho position may addnl. stabilize the nascent resonantly stabilized radical product, thus enhancing the reaction. Catechol (ortho-hydroxy phenol) has a predicted overall free energy change ΔG0 = -0.8 kcal mol-1 and electronic activation energy Ea = 7.0 kcal mol-1. Free amines at the ortho and para positions have ΔG0 = -3.8 and -1.5 kcal mol-1; Ea = 2.3 and 2.1 kcal mol-1, resp. The results indicate that the hydrogen abstraction reactions of these substituted phenols by NO2 are fast and spontaneous. Hammett constants produce a linear correlation with bond dissociation energy (BDE) demonstrating that the BDE is the main parameter controlling the dark abstraction reaction. The implications for atm. chem. and ground-level nitrous acid production are discussed.

Journal of Physical Chemistry A published new progress about Abstraction reaction enthalpy. 40925-69-7 belongs to class ethers-buliding-blocks, and the molecular formula is C7H9NO2, Name: 2-Amino-3-methoxyphenol.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Marx, Lisa; Lamberty, Daniel; Choppin, Sabine; Colobert, Francoise; Speicher, Andreas published the artcile< Atroposelective Synthesis of Isoriccardin C through a C-H Activated Heck Type Macrocyclization>, Recommanded Product: 2-(2-Methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, the main research area is atroposelective synthesis isoriccardin C carbon hydrogen activated Heck macrocyclization.

Macrocyclization is typically the key step in syntheses of cyclophane-type natural products. Considering compounds with axially chiral biaryl moieties, the control of atroposelectivity is essential for biol. activity and is synthetically challenging. Herein we report on atroposelective macrocyclization involving an oxidative Heck type process and enabling the first atropo-enantiopure synthesis of (P)-isoriccardin C (I). A chiral sulfinyl auxiliary in the ortho-position of a biaryl axis (still flexible) was used to induce a C-H activated atropodiastereoselective oxidative Heck coupling (>98% de). The traceless character of the sulfinyl auxiliary enables the introduction of a hydroxy group to give the target mol. with >98% ee as well.

European Journal of Organic Chemistry published new progress about Atropisomers. 190788-60-4 belongs to class ethers-buliding-blocks, and the molecular formula is C13H19BO3, Recommanded Product: 2-(2-Methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem