Author: Jessica.F

Li, Jing; Shi, Qiang; Han, Ying; Chen, Chuan-Feng published the artcile< Complexation of 2,6-helic[6]arene and its derivatives with 1,1'-dimethyl-4,4'-bipyridinium salts and protonated 4,4'-bipyridinium salts: an acid-base controllable complexation>, Name: 1-Bromo-2-methoxyethane, the main research area is helicarene preparation inclusion compound formation constant crystal mol structure; 4,4′-bipyridinium salts; complexation; helic[6]arene; hydrogen bond; macrocycles; macrocyclic arene.

2,6-Helic[6]arene and its derivatives I [R = H, Me, (CH2)3, (CH2)2OCH3, (CH2)2OH] were synthesized, and their complexation with 1,1′-dimethyl-4,4′-bipyridinium and protonated 4,4′-bipyridinium salts were investigated in detail. It was found that the helic[6]arene and its derivatives could all form 1:1 complexes with both 1,1′-dimethyl-4,4′-bipyridinium salts and protonated 4,4′-bipyridinium salts II (R1 = H, Me; X = PF6, tetrakis[3,5-bis(trifluoromethyl)phenyl]boranuide) in solution and in the solid state. Especially, the helic[6]arene and its derivatives I [R = (CH2)2OCH3, (CH2)2OH] exhibited stronger complexation with the guests than the other helic[6]arene derivatives for the addnl. multiple hydrogen bonding interactions between the hosts and the guests, which were evidenced by 1H NMR titrations, X-ray crystal structures and DFT calculations Moreover, it was also found that the association constants (Ka) of the complexes could be significantly enhanced with larger counteranions of the guests and in less polar solvents. Furthermore, the switchable complexation between the helic[6]arene and protonated 4,4′-bipyridinium salt could be efficiently controlled by acids and bases.

Beilstein Journal of Organic Chemistry published new progress about Acid-base titration. 6482-24-2 belongs to class ethers-buliding-blocks, and the molecular formula is C3H7BrO, Name: 1-Bromo-2-methoxyethane.

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

Henley-Smith, Peter; Whiting, Donald A.; Wood, Andrew F. published the artcile< Methods for the construction of linear 1,7-diarylheptanoids; synthesis of di-O-methylcentrolobol and precursors (synthetic and biosynthetic) to the meta,meta-bridged biphenyls myricanol and myricanone>, Application In Synthesis of 52244-70-9, the main research area is heptanoid diaryl; arylheptanoid; centrolobol analog; myricanol open chain analog; myricanone open chain analog; Grignard reaction phenylpropanal arylhaloalkane; propanal phenyl Grignard reaction; oxazine salt Grignard reaction; dithiane lithiation diarylheptanoid.

Grignard couplings of arylhaloalkanes with arylpropanals or oxazonium salts and the reactions of arylhaloalkanes with lithiated dithianes were used to prepare 1,7-diarylheptanoids, including synthetic and biosynthetic precursors of meta,meta-bridged biphenyls and related macrocyclic ethers. Thus, 4-(2-benzyloxy-3,4-dimethoxy)-1-bromobutane was treated with Mg and the product was treated with 4-PhCH2OC6H4(CH2)2CHO to give the desired alc. I (X = H, OH; R = R3 = OCH2Ph, R1 = R2 = OMe). Similarly, 4-MeOC6H4(CH2)4Br was treated with Mg and the Grignard reagent produced was treated with the oxazine salt II to give the desired ketone I (X = O, R = R1 = H, R2 = R3 = OMe). 4-(2,3,4-Trimethoxyphenyl)-1-iodobutane reacted with lithiated 2-[2-(p-methoxyphenyl)ethyl]-1,3-dithiane to give after oxidation the desired ketone I (X = O, R = R1 = R2 = R3 = OMe).

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) published new progress about Alcohols Role: USES (Uses). 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, Application In Synthesis of 52244-70-9.

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

Li, Yi-Ning; Liu, Ye; Yang, Han-Han; Zhang, Wen-Fu; Lu, Xiao-Bing published the artcile< Intramolecular Partners in Asymmetric Catalysis Copolymerization: Highly Enantioselective and Controllable at Enhanced Temperatures and Low Loadings>, Recommanded Product: 4-(4-Methoxyphenyl)-1-butanol, the main research area is asym catalyst polymerization enantioselective controllable alternating chiral; Asymmetric Ring-Opening Copolymerization; Bifuctional Bimetallic Catalyst; High Molecular Weight Polyester; Intramolecular Synergistic Catalysis; Low Loadings.

Asym. copolymerization of meso-epoxide and anhydride is a powerful strategy for preparing various isotactic polyesters with two contiguous stereogenic centers. However, the previous binary systems suffered from slow rates at low loadings, poor enantioselectivities and transesterification reactions at enhanced temperatures Herein, we report novel dinuclear aluminum complexes with multiple chiralities and ammonium salts anchored on ligand frameworks. These bifunctional catalysts exhibit high activities and enantioselectivities for epoxides/anhydrides copolymerizations at harsh conditions via intramolecularly synergistic catalysis, affording polyesters with unprecedented mol. weights and narrow distributions. Notably, no transesterification reactions were observed, significantly different from the binary catalyst/cocatalyst pairs. This study represents a rare example regarding temperature-independent asym. induction for preparing chiral polymers from achiral monomers.

Angewandte Chemie, International Edition published new progress about Chirality. 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, Recommanded Product: 4-(4-Methoxyphenyl)-1-butanol.

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

Ma, Jiaoli; Li, Jing; Guo, Penghu; Liao, Xincheng; Cheng, Huicheng published the artcile< Synthesis and antitumor activity of novel indole derivatives containing α-aminophosphonate moieties>, Recommanded Product: 2-Methoxy-N-methylaniline, the main research area is aminophosphonate moiety indole derivative antitumor activity.

A series of novel indole derivatives containing α-aminophosphonate moieties were synthesized as antitumor agents. The in vitro cytotoxic activity of the compounds was evaluated against human hepatoma cells (HepG2) and human gastric cancer cells (MGC-803) by MTT assay, revealing that most of target compounds exhibited moderate to high antitumor activities. Among them, compound C5 (IC50 = 34.2 μM) demonstrated superior inhibitory activities against HepG2 compared with 5-fluorouracil (IC50 = 78.7 μM). It is noteworthy that compound B7 (IC50 = 35.7 μM) displayed higher inhibitory activities against MGC-803 than that of 5-fluorouracil (IC50 = 82.0 μM).

Arabian Journal of Chemistry published new progress about Antiproliferative agents. 10541-78-3 belongs to class ethers-buliding-blocks, and the molecular formula is C8H11NO, Recommanded Product: 2-Methoxy-N-methylaniline.

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

Wang, Ning; Chi, Zhuomin; Wang, Xinchao; Gao, Zezhong; Li, Shangda; Li, Gang published the artcile< Formal C-H/C-I Metathesis: Site-Selective C-H Iodination of Anilines Using Aryl Iodides>, Application In Synthesis of 10541-78-3, the main research area is iodinated aniline preparation regioselective; aniline iodination palladium catalyst.

Protocols for the meta- and ortho-C-H iodination of aniline derivatives via formal C(sp2)-H/C(sp2)-I metathesis using 2-nitrophenyl iodides as mild iodinating reagents were reported herein. These protocols led to the production of a range of valuable iodinated aniline derivatives These results demonstrated the potential of developing novel site-selective C-H activation reactions with electron-rich compounds, since mild reagents can often been utilized in functional group metathesis reactions.

Organic Letters published new progress about Anilines Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 10541-78-3 belongs to class ethers-buliding-blocks, and the molecular formula is C8H11NO, Application In Synthesis of 10541-78-3.

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

Chen, Yuan; Lu, Fo-Yun; Li, Rui-Xue; Guan, Zhi; He, Yan-Hong published the artcile< Visible-light-mediated Synthesis of Bromo-containing Azaspirotrienediones from N-phenylpropynamides>, Product Details of C8H11NO, the main research area is bromo azaspirotrienedione preparation photochem green chem; phenylpropynamide tandem radical addition ipsocyclization oxidation photocatalyst.

A visible-light-mediated reaction of N-phenylpropynamides 2-R1-3-R2C6H3N(R3)C(=O)CCR4 (R1 = H, Me, OMe; R2 = H, Me, CF3, Cl, F, Br; R1R2 = -CH=CHCH=CH-; R3 = Me, Et, i-Pr, Bn; R4 = Ph, 3-MeOC6H4, 4-MeOC6H4, 4-MeC6H4, 4-CF3C6H4, 4-FC6H4, 4-ClC6H4, 4-BrC6H4) and 1-(3,4-dihydro-1(2H)-quinolinyl)-3-phenyl-2-propyn-1-one with di-Et 2,2-dibromomalonate for the synthesis of bromo-substituted azaspirotrienediones I and II has been developed. This method allows the formation of C-Br, C-C and C=O bonds in one pot via a cascade radical addition/ipso-cyclization/oxidation process. A possible radical mechanism involving single electron transfer and energy transfer processes is proposed based on control experiments, cyclic voltammetry determination and Stern-Volmer quenching experiments

Asian Journal of Organic Chemistry published new progress about Bond formation (C-Br, C-C, C=O). 10541-78-3 belongs to class ethers-buliding-blocks, and the molecular formula is C8H11NO, Product Details of C8H11NO.

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

Yang, Xiaoguang; Hou, Zhuang; Wang, Dun; Mou, Yanhua; Guo, Chun published the artcile< Design, synthesis and biological evaluation of novel heptamethine cyanine dye-erlotinib conjugates as antitumor agents>, SDS of cas: 6482-24-2, the main research area is heptamethine cyanine dye erlotinib conjugate preparation EGFRTK lung cancer; EGFR-TK inhibitor; Heptamethine cyanine dye; Non-small cell lung cancer.

Epidermal growth factor receptor tyrosine kinase (EGFR-TK) has been proved as a target for the treatment of non-small cell lung cancer (NSCLC) with specific gene mutations. However, EGFR-TK inhibitors (EGFR-TKIs) need to enter cancer cells and then competitively interact with the active site of tyrosine kinase receptors to suppress the downstream signaling pathway to inhibit tumor proliferation. In this study, in order to improve the tumor cell targeting ability of EGFR-TKI, EGFR-TKI erlotinib was conjugated with the cancer cell-targeting heptamethine cyanine dyes to form seventeen novel erlotinib-dye conjugates. The efficiency of tumor targeting properties of conjugates against cancer cell growth and EGFR-TK inhibition was evaluated in vitro. The result revealed that most erlotinib-dye conjugates exhibited stronger inhibitory effect on A549, H460, H1299 and MDA-MB-231 cell lines than the parent drug erlotinib. Meanwhile, representative compounds exhibited weak cytotoxicity on human normal mammary epithelial MCF-10A cells. Moreover, the conjugate CE17 also showed ∼14-fold higher EGFR-TK inhibition activity (IC50 = 0.124 μM) than erlotinib (IC50 = 5.182 μM) in A549 cell line. Finally, mol. docking anal. verified that the erlotinib moiety of compound CE17 could form hydrogen bond with Met-769 and occupy active cavity of EGFR-TK. Therefore, we believed the integration strategy between heptamethine cyanine dyes and EGFR-TKI will contribute to enhancing the therapeutic effect of EGFR-TKI for NSCLC treatment.

Bioorganic & Medicinal Chemistry Letters published new progress about Antitumor agents. 6482-24-2 belongs to class ethers-buliding-blocks, and the molecular formula is C3H7BrO, SDS of cas: 6482-24-2.

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

Plaumann, H. P.; Keay, B. A.; Rodrigo, R. published the artcile< The regiospecific lithiation of aromatic acetals>, Name: 3-Methoxy-2-methylbenzaldehyde, the main research area is lithiation aromatic acetal regioselective; substituent effect lithiation aromatic acetal; deprotonation aromatic acetal substituent effect; benzaldehyde ortho substituted.

The reaction of 11 di-Me aromatic acetals with alkyllithiums are described. In compounds with substituents ortho to the acetal very little deprotonation occurred, whereas with no substituent present lithiation occurred readily. E.g., I (R = H, R1 = OMe) with Me3CLi (-23°), MeI, and acid gave 95% II, whereas no reaction occurred when I (R = OMe, R1 = H) was treated similarly. The reaction provides a facile entry to 2,3- and 2,3,4-substituted benzaldehydes.

Tetrahedron Letters published new progress about Aryl aldehydes Role: SPN (Synthetic Preparation), PREP (Preparation). 56724-03-9 belongs to class ethers-buliding-blocks, and the molecular formula is C9H10O2, Name: 3-Methoxy-2-methylbenzaldehyde.

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

Dix, Stefan; Jakob, Michael; Hopkinson, Matthew N. published the artcile< Deoxytrifluoromethylthiolation and Selenylation of Alcohols by Using Benzothiazolium Reagents>, Related Products of 52244-70-9, the main research area is trifluoromethylthio methylbenzothiazolium triflate aliphatic alc deoxytrifluoromethylthiolation; trifluoromethylselenyl methylbenzothiazolium triflate aliphatic alc deoxytrifluoromethylselenylation; alcohols; fluorine; reagent development; trifluoromethylselenyl group; trifluoromethylthio group.

Aliphatic compounds substituted with medicinally important trifluoromethylthio (SCF3) and trifluoromethylselenyl (SeCF3) groups were synthesized directly from alcs. by using the new benzothiazolium salts BT-SCF3 and BT-SeCF3. These bench-stable fluorine-containing reagents are facile to use and can be prepared in two steps from non-fluorinated heteroaromatic starting materials. To the best of our knowledge, these are the first reported examples in which the metal-free deoxytrifluoromethylthiolation process and similarly efficient trifluoromethylselenylation reactions proceeded under mild conditions using BT-SCF3 and BT-SeCF3 resp.

Chemistry – A European Journal published new progress about Aliphatic alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, Related Products of 52244-70-9.

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