Esters-buliding-blocks

Johnson, Carl R. published the artcileSyntheses of thiiranes from aldehydes or ketones and sulfur-stabilized carbanions, HPLC of Formula: 3052-61-7, the publication is Tetrahedron Letters (1975), 2865-8, database is CAplus.

S-stabilized carbanionic compounds with alkyllithium and aldehydes gave homologated derivatives which with alkali or on heating decomposed to thiiranes. E.g., the thiazoline I (R = H) and the pyridine II (R = H) with BuLi and PhCHO gave homologs I and II [R = CH(OH)Ph] which with base gave thiiranes III (R = H, Ph, resp.). Similarly, Et2NCS2CH2Ph with LiN(CHMe2)2 and EtCHO gave, after treatment with NaH, III (R = Et).

Tetrahedron Letters published new progress about 3052-61-7. 3052-61-7 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Amide, name is Benzyl diethylcarbamodithioate, and the molecular formula is C12H17NS2, HPLC of Formula: 3052-61-7.

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

Okamoto, Akimitsu published the artcileSite-Selective DNA Alkylation of GG Steps by Naphthaldiimide Derivatives Possessing Enantiomeric Epoxide, COA of Formula: C9H9NO6S, the publication is Organic Letters (2000), 2(21), 3249-3251, database is CAplus and MEDLINE.

We have synthesized an enantiomeric pair of novel DNA alkylating agents consisting of a naphthaldiimide intercalator and a chiral epoxy side chain. These naphthaldiimide derivatives have high DNA binding affinity and selectively alkylate 5’G of the GG steps for (S)-epoxide and 3’G for (R)-epoxide.

Organic Letters published new progress about 115314-17-5. 115314-17-5 belongs to esters-buliding-blocks, auxiliary class Epoxides,Chiral,Nitro Compound,Sulfonate,Benzene, name is (R)-Oxiran-2-ylmethyl 3-nitrobenzenesulfonate, and the molecular formula is C9H9NO6S, COA of Formula: C9H9NO6S.

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

Inabata, Kenichiro published the artcileAnalysis of Volatile Compounds of Physalis, Computed Properties of 110-34-9, the publication is Koryo (2009), 45-49, database is CAplus.

The volatile compounds of Cape gooseberry and Chinese lantern plant were extracted with dichloromethane and analyzed by GC and GC/MS. A total of 137 components were identified in Cape gooseberry and 37 in Chinese lantern plant. It was suggested that the composition of components might contribute to the characteristic odor of them.

Koryo published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C20H40O2, Computed Properties of 110-34-9.

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

Asano, Akiko published the artcileEffect of the powerful plasticity of the tert-butyl side chain on the conformational equilibrium of ascidiacyclamides, Synthetic Route of 106391-88-2, the publication is Journal of Peptide Science (2021), 27(12), e3363, database is CAplus and MEDLINE.

Ascidiacyclamide [cyclo(-Ile1,5-oxazoline2,6-D-Val3,7-thiazole4,8-)2] is a cytotoxic cyclic peptide from ascidian. Through structural analyses using monosubstituted analogs (Xaa1: Ala, 2-aminobutyric acid, Val, cyclohexylglycine, and phenylglycine), we previously demonstrated the conformational equilibrium between its square and folded forms. As the bulkiness of the Xaa1 residue side chain was reduced, spontaneous folding was promoted, and the cytotoxicity decreased accordingly. In the present study, five disubstituted analogs in which a tert-leucine residue (Tle) was incorporated at the 5-position of the abovementioned monosubstituted analogs were synthesized, after which their structures were analyzed using X-ray diffraction, CD (CD) spectral measurements, and 1H NMR-based quant. anal. The side chains of the Tle and Ile residues are structural isomers of one another, and the Tle residue bearing the tert-Bu group can be expected to play a role as a building block. In fact, peptides incorporating Tle5 exhibited much less spontaneous folding than their Ile5 counterparts in both crystal and solution Increases in enthalpy and entropy due to the tert-Bu group during the folding process resulted in increased conformational free energy (ΔG°). The powerful plasticity of the tert-Bu group would stabilize the square form relating with cytotoxicity.

Journal of Peptide Science published new progress about 106391-88-2. 106391-88-2 belongs to esters-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Amide,Aldehyde, name is (R)-tert-Butyl (3-methyl-1-oxobutan-2-yl)carbamate, and the molecular formula is C10H19NO3, Synthetic Route of 106391-88-2.

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

Danton, Fanny published the artcileSite-Selective Pd-Catalysed Fujiwara-Moritani type Reaction of N,S-Heterocyclic Systems with Olefins, Recommanded Product: Dimethyl itaconate, the publication is Advanced Synthesis & Catalysis (2021), 363(4), 1088-1095, database is CAplus.

Dihydro-1,4-thiazine skeletons bearing olefin fragment at their α-position were prepared through a Pd(OAc)₂-catalyzed Fujiwara-Moritani type reaction via C-H alkenylation with olefins. This approach is selective, generalizable to a wide range of olefins and requires only 1 equivalent of Ag₂CO₃ without the need of co-oxidant. The C-H bond activation proved to be strongly dependent on the olefin’s substitution while unfused dihydro-1,4-thiazines seemed to be affected by the oxidation state of the sulfur atom. The utility of olefins obtained was demonstrated by their implication in the dipolar cycloaddition reaction with a non-stabilized azomethine ylide.

Advanced Synthesis & Catalysis published new progress about 617-52-7. 617-52-7 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Aliphatic hydrocarbon chain,Ester, name is Dimethyl itaconate, and the molecular formula is C7H10O4, Recommanded Product: Dimethyl itaconate.

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

Yagofarov, Mikhail I. published the artcileNew aspects in the thermochemistry of solid-liquid phase transitions of organic non-electrolytes, Name: 3-(Methoxycarbonyl)benzoic acid, the publication is Journal of Molecular Liquids (2018), 58-66, database is CAplus.

Thermochem. of solid-liquid phase transitions plays an important role in solidification studies of polymers, metals, inorganic salts, and low-mol. organic compounds Enthalpy of fusion is a source of information about intermol. interactions in materials, crystallinity, mixtures phase diagrams shape, heat transfer in the solidification interval. The present paper is devoted to relationship between the fusion enthalpies of aromatic compounds at the melting temperature and the solution enthalpies in benzene at 298.15 K. Sublimation and vaporization thermochem. are used as an addnl. source of information about the latter relationship. Depending on the magnitude of deviation between the solution enthalpies in benzene at 298.15 K and fusion enthalpies at the melting temperature, aromatic compounds are conventionally divided into three groups. For a large number of aromatic compounds not capable of self-association the equality between the fusion enthalpies at the melting temperature and the solution enthalpies in benzene at 298.15 K is established. For self-associated aromatic compounds the solution enthalpy in benzene at 298.15 K exceeds the fusion enthalpy at the melting temperature, and insertion of a substituent not forming inter- and intramol. hydrogen bonds does not affect the difference between the solution and fusion enthalpies. The enthalpies of solution in benzene at 298.15 K of several aromatic compounds not capable of self-association appear to be visibly less than the fusion enthalpies at the melting temperature The reasons of different relationships between the fusion and solution enthalpies are analyzed using Kirchhoff’s law for the fusion enthalpy.

Journal of Molecular Liquids published new progress about 1877-71-0. 1877-71-0 belongs to esters-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Ester, name is 3-(Methoxycarbonyl)benzoic acid, and the molecular formula is C3H12Cl2N2, Name: 3-(Methoxycarbonyl)benzoic acid.

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

Solomonov, Boris N. published the artcileFusion enthalpies of benzoic acid derivatives, aromatic and heteroaromatic carboxylic acids as a tool for estimation of sublimation enthalpies at 298.15 K, Name: 3-(Methoxycarbonyl)benzoic acid, the publication is Fluid Phase Equilibria (2016), 93-100, database is CAplus.

In this work a method of estimation of sublimation enthalpies of benzoic acid derivatives and aromatic or heteroaromatic carboxylic acids was developed. The method is based on calculation of sublimation enthalpy from fusion enthalpy of studied compound and of benzoic acid at corresponding melting temperatures and sublimation enthalpy of benzoic acid at 298.15 K. Calculated sublimation enthalpy values of benzoic acid derivatives containing CH₃-, CH₃O-, F-, Cl-, Br-, I-, NO₂– and other substituents, 1- and 2-naphthoic acids and heteroaromatic carboxylic acids (38 compounds in total) were compared with literature data (at 298.15 K) obtained by conventional methods. In most cases, divergence does not exceed 2-3%.

Fluid Phase Equilibria published new progress about 1877-71-0. 1877-71-0 belongs to esters-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Ester, name is 3-(Methoxycarbonyl)benzoic acid, and the molecular formula is C17H20ClN3, Name: 3-(Methoxycarbonyl)benzoic acid.

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

Samatov, Aizat A. published the artcileVaporization/sublimation enthalpies of mono- and dimethyl-esters estimated by solution calorimetry method, Application of Dimethyl adipate, the publication is Thermochimica Acta (2020), 178529, database is CAplus.

The additive scheme for calculating the solvation enthalpies of aliphatic compounds has been developed for linear mono- and dimethyl-esters. Ester group contribution to the enthalpy of solvation in n-heptane was obtained. Accuracy of the proposed approach for determination of solvation enthalpies of linear mono- and dimethyl-esters was tested by comparison with exptl. solvation enthalpies. In most cases, deviations do not exceed 1 kJ·mol^-1. It was found that the dependence of the solution enthalpies of mono- and dimethyl-esters on the number of carbon atoms in the mol. can be fitted by power function. This dependence and a group-additivity scheme for solvation enthalpy were used for estimation of the enthalpies of phase transitions of mono- and dimethyl-esters. Evaluated values of sublimation, vaporization, and fusion enthalpies at 298.15 K are in good agreement with exptl. data obtained by conventional methods.

Thermochimica Acta published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, Application of Dimethyl adipate.

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

Zhang, Liang published the artcileSulfonium Salts Enable the Direct Sulfenylation of Activated C(sp³)-H Bonds, Synthetic Route of 517-23-7, the publication is European Journal of Organic Chemistry (2021), 2021(9), 1365-1369, database is CAplus.

Herein, the direct α-sulfenylation of a series of β-dicarbonyl, β-ketophosphonate, and β-ketonitrile compounds, mediated by sulfonium salts has been described. Traditionally, sulfonium salts which are synthesized by activation of dialkylsulfoxides serve as oxidizing agents or precursors of sulfur ylide. In this transformation, sulfonium salts as readily prepared and operationally simple sulfenylation reagents firstly achieved alkylsulfenylation of various activated C(sp³)-H bonds with the formation of tetra-substituted carbon center. Thus, e.g., sulfenylation of Me 2-oxocyclopentanecarboxylate with DMSO in presence of AcCl as activator and NaSbF₆ in MeCN afforded I (79%).

European Journal of Organic Chemistry published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C3H7NO2, Synthetic Route of 517-23-7.

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

Kinjo, Mieko published the artcileSex pheromone of the sugarcane shoot borer, Tetramoera schistaceana Snellen (Lepidoptera:Tortricidae:Olethreutinae). Isolation and identification, COA of Formula: C14H26O2, the publication is Nippon Oyo Dobutsu Konchu Gakkaishi (1996), 40(3), 191-197, database is CAplus.

The structure of the sex pheromone of the most important sugarcane pest, sugarcane shoot borer, T. schistaceana was determined to establish an integrated method of controlling this pest. The sex pheromone was extracted from the abdominal tips of virgin females. Using laboratory bioassay in a small flight tunnel, 2 active components of the sex pheromone were isolated. The major and minor components were identified as (Z)-9-dodecenyl acetate and (E)-9,11-dodecadienyl acetate, resp. The major component alone had no attractivity but a mixture of the 2 components showed strong activity in sugarcane fields. The sex pheromone of T. schistaceana was determined to be a 100:1 mixture of (Z)-9-dodecenyl acetate and (E)-9,11-dodecadienyl acetate. The synergist increasing the attractivity of the sex pheromone was (E)-7,9-decadienyl acetate. The best formulation for the sex attractant was a mixture of the 2 pheromone components and the synergist at a ratio of 1000:10:1.

Nippon Oyo Dobutsu Konchu Gakkaishi published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C14H26O2, COA of Formula: C14H26O2.

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