Tag: M.W=100-150

Du, Xi-hua published the artcileQuantitative structure-property relationship of halogenated arenes, Related Products of chlorides-buliding-blocks, the publication is Harbin Gongye Daxue Xuebao (2009), 41(9), 241-245, database is CAplus.

With the define of at. characteristic value δ_i on the mol. topol. theory, the value setting up the group dyeing index ^mX_A and its inverted index ^mX_B, this paper studies relationship between the refractive index and mol. structure of 92 halogenated arenes by using quant. structure-property relationship technol. The reasonable mol. modeling equations were achieved by multiple regression for the prediction of the refractive index of halogenated arenes. The multiple regression equations are established, the correlation coefficient is 0.902 6. The calculated results show that the imputed refractive index of halogenated arenes were in good agreement with the exptl. data, with mean relative deviation being 0.47%. The study showed that application group dyeing index and its inverted index simultaneously can reflect more completely the structure-property relationships of halogenated arenes. The performances of the models were tested through cross-validation by leave-one-out procedure, which shows the estimation stability and prediction of the models based on the group dyeing index are quite contented.

Harbin Gongye Daxue Xuebao published new progress about 116850-28-3. 116850-28-3 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Benzene, name is 2-Chloro-1-fluoro-3-methylbenzene, and the molecular formula is C7H6ClF, Related Products of chlorides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Baez, Jose E. published the artcileSynthesis of Poly(methylene-b-ε-caprolactone) and Poly(ε-caprolactone) with Linear Alkyl End Groups: Synthesis, Characterization, Phase Behavior, and Compatibilization Efficacy, Computed Properties of 5034-06-0, the publication is Industrial & Engineering Chemistry Research (2017), 56(37), 10366-10383, database is CAplus.

Diblock copolymers of poly(methylene-b-ε-caprolactone) (PM-b-PCL) were synthesized in two steps: (a) polyhomologation, to obtain following oxidative cleavage of the carbon-boron, (PM, block1), an α-hydroxyl-ω-Me polymethylene (PMOH, CH3-[CH2]m-OH). Following transfer reaction to the ring-opening polymerization catalyst and (b) ring-opening polymerization (ROP) of ε-caprolactone (CL) (PCL, block2). In addition, a series of homopolymers derived from poly(ε-caprolactone) (PCL) oligoesters containing an end group of docosyl (CH3-[CH2]21- or C22) (C22-PCL) were obtained as a model to compare their phys. properties by DSC with those of PM-b-PCL. The oligomers derived from PM-b-PCL and C22-PCL were characterized by 1H and 13C NMR, AFM, DSC, GPC and MALDI-TOF. PM-b-PCL and C22-PCL were evaluated as compatibilizers for PE/PCL polymer blends. Identification and anal. of optimized blocks of PM-b-PCL by POM and SEM showed improved mixing of PE/PCL blends.

Industrial & Engineering Chemistry Research published new progress about 5034-06-0. 5034-06-0 belongs to chlorides-buliding-blocks, auxiliary class Salt,Aliphatic hydrocarbon chain, name is trimethyloxosulphonium chloride, and the molecular formula is C3H9ClOS, Computed Properties of 5034-06-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Ladelta, Viko published the artcileA new tricrystalline triblock terpolymer by combining polyhomologation and ring-opening polymerization. synthesis and thermal properties, Application In Synthesis of 5034-06-0, the publication is Journal of Polymer Science, Part A: Polymer Chemistry (2019), 57(24), 2450-2456, database is CAplus.

New tricryst. triblock terpolymers, polyethylene-block-poly(ε-caprolactone)-block-poly(L-lactide) (PE-b-PCL-b-PLLA), were synthesized by ROP of ε-caprolactone (CL) and L-lactide (LLA) from linear ω-hydroxyl polyethylene (PE-OH) macroinitiators. The linear PE-OH macroinitiators were prepared by C1 polymerization of Me sulfoxonium methylide (polyhomologation). Tin(II) 2-ethylhexanoate was used as the catalyst for the sequential ROP of CL and LLA in one-pot polymerization at 85 °C in toluene (PE-OH macroinitiators are soluble in toluene at 80 °C). ¹H NMR spectra confirmed the formation of PE-b-PCL-b-PLLA triblock terpolymers through the appearance of the characteristic proton peaks of each block. GPC traces showed the increase in the number average mol. weight from PE-OH macroinitiator to PE-b-PCL, and PE-b-PCL-b-PLLA corroborating the successful synthesis. The existence of three crystalline blocks was proved by DSC and XRD spectroscopy.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about 5034-06-0. 5034-06-0 belongs to chlorides-buliding-blocks, auxiliary class Salt,Aliphatic hydrocarbon chain, name is trimethyloxosulphonium chloride, and the molecular formula is C3H9ClOS, Application In Synthesis of 5034-06-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Ladelta, Viko published the artcileTetracrystalline Tetrablock Quarterpolymers: Four Different Crystallites under the Same Roof, Synthetic Route of 5034-06-0, the publication is Angewandte Chemie, International Edition (2019), 58(45), 16267-16274, database is CAplus and MEDLINE.

Multicrystalline block polymers having three or more crystalline segments are essential materials for the advancement of physics in the field of crystallinity. The challenging synthesis of multicrystalline polymers has resulted in only a limited number of tricryst. terpolymers having been reported to date. We report, for the first time, the synthesis of polyethylene-b-poly(ethylene oxide)-b-poly(ε-caprolactone)-b-poly(L-lactide) (PE-b-PEO-b-PCL-b-PLLA), a tetracryst. tetrablock quarterpolymer, by combining polyhomologation, ring-opening polymerization, and an organic/metal “catalyst switch” strategy. ¹H NMR spectroscopy and gel-permeation chromatog. confirmed the formation of the tetrablock quarterpolymer, while differential scanning calorimetry, X-ray diffraction, and wide-line separation solid-state NMR spectroscopy revealed the existence of four different crystalline domains.

Angewandte Chemie, International Edition published new progress about 5034-06-0. 5034-06-0 belongs to chlorides-buliding-blocks, auxiliary class Salt,Aliphatic hydrocarbon chain, name is trimethyloxosulphonium chloride, and the molecular formula is C3H9ClOS, Synthetic Route of 5034-06-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Auguste, Sandra P. published the artcileSynthesis of uridine derivatives containing strategically placed radical traps as potential inhibitors of ribonucleotide reductase, Product Details of C3H9ClOS, the publication is Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1995), 395-404, database is CAplus.

A series of uridine derivatives, e.g. I, have been prepared with a view to inhibiting the enzyme ribonucleotide reductase by trapping the radical responsible for initiating the reduction These have an oxime ether on the beta face at C-3 or C-2 of the ribose moiety. Compounds I were tested with ribonucleotide reductase, HSV-1, and cytomegalovirus but showed no activity.

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry published new progress about 5034-06-0. 5034-06-0 belongs to chlorides-buliding-blocks, auxiliary class Salt,Aliphatic hydrocarbon chain, name is trimethyloxosulphonium chloride, and the molecular formula is C3H9ClOS, Product Details of C3H9ClOS.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Alghamdi, Reem D. published the artcilePolyethylene grafted silica nanoparticles via surface-initiated polyhomologation: A novel filler for polyolefin nanocomposite, Application In Synthesis of 5034-06-0, the publication is Polymer (2022), 125029, database is CAplus.

Silica nanoparticles (SiO₂ NPs) were prepared and functionalized with polyethylene (PE@SiO₂ NPs) using the surface-initiated polyhomologation (SI-polyhomologation) technique. Polyolefin nanocomposites were fabricated later by melt mixing of different ratios of the as-prepared SiO₂ NPs and PE@SiO₂ NPs with linear low-d. polyethylene (LLDPE) and low-d. polyethylene (LDPE) matrixes. Firstly, SiO₂ NPs were modified with different alkoxysilane ligands, dichloro(divinyl)silane (DCDVS), allyl trimethoxysilane (ATMS), and vinyl triethoxylsilane (VTES). Subsequently, thexylborane, an initiator for SI-polyhomologation, was immobilized to the modified surface of SiO₂NPs through hydroboration reactions. Polyhomologation was then allowed to proceed by adding monomer solution to form polyethylene brushes covalently bonded to the surface of the NPs. Physiochem. characterizations had confirmed the morphol., chem. structure, and thermal stability for each step of modification reactions. LLDPE and LDPE nanocomposites were prepared by extrusion with SiO₂ NPs and PE@SiO₂ NPs as nanofillers. Finally, tensile tests and morphol. SEM-based analyses are presented to discuss the influence of the grafted PE on both the dispersion of the fillers and the mech. properties of the filler/matrix interphase.

Polymer published new progress about 5034-06-0. 5034-06-0 belongs to chlorides-buliding-blocks, auxiliary class Salt,Aliphatic hydrocarbon chain, name is trimethyloxosulphonium chloride, and the molecular formula is C3H9ClOS, Application In Synthesis of 5034-06-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Sone, Toshihiko published the artcileEnantioselective synthesis of 2,2-disubstituted terminal epoxides via catalytic asymmetric Corey-Chaykovsky epoxidation of ketones, Recommanded Product: trimethyloxosulphonium chloride, the publication is Molecules (2012), 1617-1634, database is CAplus and MEDLINE.

Catalytic asym. Corey-Chaykovsky epoxidation of various ketones RCOR¹ (R = Ph, 1-naphthyl, n-octyl, etc., R¹ = Me; R = Ph, 4-ClC₆H₄, 3-pyridyl, etc., R¹ = ET, n-Pr, CHMe₂) with dimethyloxosulfonium methylide using a heterobimetallic La-Li₃-BINOL complex (LLB) is described. The reaction proceeded smoothly at room temperature in the presence of achiral phosphine oxide additives, and 2,2-disubstituted terminal epoxides I were obtained in high enantioselectivity (97%-91% ee) and yield (>99%-88%) from a broad range of Me ketones with 1-5 mol% catalyst loading. Enantioselectivity was strongly dependent on the steric hindrance, and other ketones, such as Et ketones and Pr ketones resulted in slightly lower enantioselectivity (88%-67% ee).

Molecules published new progress about 5034-06-0. 5034-06-0 belongs to chlorides-buliding-blocks, auxiliary class Salt,Aliphatic hydrocarbon chain, name is trimethyloxosulphonium chloride, and the molecular formula is C6H8N2, Recommanded Product: trimethyloxosulphonium chloride.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Sone, Toshihiko published the artcileCatalytic Asymmetric Synthesis of 2,2-Disubstituted Terminal Epoxides via Dimethyloxosulfonium Methylide Addition to Ketones, Formula: C3H9ClOS, the publication is Journal of the American Chemical Society (2008), 130(31), 10078-10079, database is CAplus and MEDLINE.

Catalytic asym. Corey-Chaykovsky epoxidation of ketones with dimethyloxosulfonium methylide using an La-Li₃-tris(binaphthoxide) + Ar₃P:O (Ar = 2,4,6-trimethoxyphenyl) complex proceeded smoothly at room temperature, and 2,2-disubstituted terminal epoxides were obtained with high enantioselectivity (91-97%) and yield (>88-99%) from a broad range of Me ketones with 1-5 mol% catalyst loading. The use of achiral additive Ar₃P:O was important to achieve high enantioselectivity.

Journal of the American Chemical Society published new progress about 5034-06-0. 5034-06-0 belongs to chlorides-buliding-blocks, auxiliary class Salt,Aliphatic hydrocarbon chain, name is trimethyloxosulphonium chloride, and the molecular formula is C19H14O2, Formula: C3H9ClOS.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Kanno, Hideo published the artcileSynthesis and antihypertensive activity of 1,4-dihydropyridine derivatives with a 4-(disubstituted phenyl) ring and an aminoalkyl ester group: highly potent and long-lasting calcium antagonists, Quality Control of 116850-28-3, the publication is Chemical & Pharmaceutical Bulletin (1992), 40(8), 2049-54, database is CAplus and MEDLINE.

New 1,4-dihydropyridine derivatives I (R = Cl, F, NO₂; R¹, R² = H, Cl, F, NO₂; X = CH₂, CMe₂CH₂), bearing a 4-(disubstituted phenyl) ring and an aminoethyl ester or an amino-2,2-dimethylpropyl ester, were synthesized and their antihypertensive activities were examined in normotensive rats and spontaneously hypertensive rats. The effects of Ph substituents and ester groups on the antihypertensive activity are discussed. Several compounds showed a more potent antihypertensive activity than nicardipine and most compounds had a longer duration of action. Among them, I (R = F, R¹ = H, R² = NO₂, X = CMe₂CH₂).HCl showed highly potent and long-lasting activity and was selected as a candidate for further pharmacol. investigations.

Chemical & Pharmaceutical Bulletin published new progress about 116850-28-3. 116850-28-3 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Benzene, name is 2-Chloro-1-fluoro-3-methylbenzene, and the molecular formula is C7H6ClF, Quality Control of 116850-28-3.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Lai, J. S. published the artcilePreparation of sulfur ylide complexes of platinum by phase transfer catalysis, Application of trimethyloxosulphonium chloride, the publication is Journal of Organometallic Chemistry (1990), 393(3), 431-40, database is CAplus.

Various sulfur ylide complexes of Pt were prepared by the phase transfer catalysis (PTC). Thus, reaction of Pt(PR₃)₂Cl₂ (R = Me, Ph) in CH₂Cl₂ with [S(O)(CH₃)₃]I under PTC/OH^– conditions give complexes {Pt(PR₃)₂[(CH₂)₂S(O)(CH₃)]}I, which contain a bidentate double sulfur ylide. With Pt(dppe)Cl₂ [dppe = Ph₂P(CH₂)₂PPh₂] as starting material, a similar product was obtained. But when Pt(dppm)Cl₂ [dppm = Ph₂PCH₂PPh₂] was treated with [S(O)(CH₃)₃]Cl under PTC/OH^– conditions, an unexpected product {Pt(PPh₂CH₃)(PPh₂OH)[(CH₂)₂S(O)(CH₃)]}Cl was obtained. This compound contains a bidentate double sulfur ylide and two unsym. phosphines resulting from the base hydrolysis of dppm. Compound {Pt(PPh₃)₂[(CH₂)₂S(O)(CH₃)]}I, was subjected to an x-ray diffraction study.

Journal of Organometallic Chemistry published new progress about 5034-06-0. 5034-06-0 belongs to chlorides-buliding-blocks, auxiliary class Salt,Aliphatic hydrocarbon chain, name is trimethyloxosulphonium chloride, and the molecular formula is C3H9ClOS, Application of trimethyloxosulphonium chloride.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics