Day: November 25, 2022

Hu, Jing published the artcileLeather odor analysis by GC-MS and simulation, HPLC of Formula: 177-10-6, the publication is Zhongguo Pige (2012), 41(5), 28-31, database is CAplus.

The volatile organic components of different leathers were extracted by Soxhlet extraction and determined with gas chromatog. and mass spectrometry (GC-MS). The leather fragrance was simulated by the sensor anal. based on the GC-MS results. The results show that there are many volatile organic components in the odor of the unfinished and finished sheep garment leathers, cow garment leather and cow car seat leather. These components are hydrocarbons, esters, aldehydes, acids, ethers and ketones, etc. Based on the GC-MS results, the leather fragrance is further prepared

Zhongguo Pige published new progress about 177-10-6. 177-10-6 belongs to dioxole, auxiliary class Dioxolane,Spiro, name is 1,4-Dioxaspiro[4.5]decane, and the molecular formula is C8H14O2, HPLC of Formula: 177-10-6.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Sun, Xudong published the artcileSynthesis of a novel multi-SO₃H functionalized ionic liquid and its catalytic activities, Application of 1,4-Dioxaspiro[4.5]decane, the publication is Kinetics and Catalysis (2012), 53(3), 301-305, database is CAplus.

A novel multi-SO₃H functionalized ionic liquid is synthesized and a detailed account of its catalytic activities in acetalization and acetylation is given. The results showed that the ionic liquid is very efficient in the conventional acid-catalyzed reactions with good to excellent yields within a short reaction time. Operational simplicity, small amounts required, low cost of the catalyst, high yields, scalability and reusability are the key features of this methodol., which indicates the high potentialities of the novel ionic liquid to be used in environmentally friendly processes.

Kinetics and Catalysis published new progress about 177-10-6. 177-10-6 belongs to dioxole, auxiliary class Dioxolane,Spiro, name is 1,4-Dioxaspiro[4.5]decane, and the molecular formula is C7H5BF4O3, Application of 1,4-Dioxaspiro[4.5]decane.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Jiang, Dabo published the artcileSynthesis of acetals (ketals) catalyzed by phosphogypsum, COA of Formula: C8H14O2, the publication is Shiyou Huagong (2016), 45(3), 330-334, database is CAplus.

The synthesis of acetals (ketones) catalyzed by phosphogypsum (PG) was explored. The effects of the mole ratio of ethylene glycol to cyclohexanone, catalyst dosage, reaction time, water-carrying agents, cyclohexane dosage and catalyst reuse times on the yields of cyclohexanone glycol ketal were investigated. The results showed that the yield of cyclohexanone glycol ketal reached 99.9% under the conditions of catalyst dosage 7.5% (w), mole ratio of ethylene glycol to cyclohexanone 1.5, cyclohexane 16 mL and reaction time 2.5 h. After PG was reused 8 times, the yield of cyclohexanone glycol ketal still reached 98.5%. The catalytic activities of PG in the syntheses of 12 acetals (ketones) were studied. PG indicated excellent catalytic performances for the synthesis of the 12 acetals (ketones) and was a environmentally friendly solid acid catalyst for the utilization of the byproduct PG from phosphate industry.

Shiyou Huagong published new progress about 177-10-6. 177-10-6 belongs to dioxole, auxiliary class Dioxolane,Spiro, name is 1,4-Dioxaspiro[4.5]decane, and the molecular formula is C8H14O2, COA of Formula: C8H14O2.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Berhal, Farouk published the artcileRh-catalyzed asymmetric 1,4-addition of arylboronic acids to α,β-unsaturated ketones with DIFLUORPHOS and SYNPHOS analogues, Computed Properties of 503538-69-0, the publication is Journal of Organic Chemistry (2011), 76(15), 6320-6326, database is CAplus and MEDLINE.

Applications of electron-deficient DIFLUORPHOS and SYNPHOS analogs in the rhodium-catalyzed asym. conjugate addition of boronic acids to α,β-unsaturated ketones afford the 1,4-addition adducts e. g., I and II in yields up to 92% and with 99% ee. Particularly, a Rh-catalyzed asym. 1,4-addition of arylboronic acids to nonsubstituted maleimide substrates using the (R)-3,5-diCF₃-SYNPHOS ligand is also reported. This protocol provides access to various enantioenriched 3-substituted succinimide units of biol. interest, in high yields and good to excellent ee up to 93%, which could be upgraded up to 99% ee, after a single crystallization

Journal of Organic Chemistry published new progress about 503538-69-0. 503538-69-0 belongs to dioxole, auxiliary class (Atropisomeric Bisphosphine Ligands, name is (R)-5,5′-Bis(diphenylphosphino)-2,2,2′,2′-tetrafluoro-4,4′-bi-1,3-benzodioxole, and the molecular formula is C38H24F4O4P2, Computed Properties of 503538-69-0.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Wang, Xianhua published the artcileComparative study of wet and dry torrefaction of corn stalk and the effect on biomass pyrolysis polygeneration, Application In Synthesis of 1193-11-9, the publication is Bioresource Technology (2018), 88-97, database is CAplus and MEDLINE.

Wet torrefaction (WT) possesses some advantages over dry torrefaction (DT). In this study, a comparative anal. of torrefied corn stalk from WT and DT was conducted along with an investigation of their pyrolysis properties under optimal conditions for biomass pyrolysis polygeneration. Compared with DT, WT removed 98% of the ash and retained twice the amount of hydrogen. The impacts of DT and WT on the biomass macromol. structure was also found to be different using two-dimensional perturbation correlation IR spectroscopy (2D-PCIS). WT preserved the active hydroxyl groups and rearranged the macromol. structure to allow cellulose to be more ordered, while DT removed these active hydroxyl groups and formed inter-crosslinking structures in macromols. Correspondingly, the bio-char yield after WT was lower than DT but the bio-char quality was upgraded due to high ash removal. Furthermore, higher bio-oil yield, higher sugar content, and higher H₂ generation, were obtained after WT.

Bioresource Technology published new progress about 1193-11-9. 1193-11-9 belongs to dioxole, auxiliary class Dioxolanes, name is 2,2,4-Trimethyl-1,3-dioxolane, and the molecular formula is C5H5BrN2, Application In Synthesis of 1193-11-9.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Yan, Zhong published the artcileEnantioselective Synthesis of α-Amino Phosphonates via Pd-Catalyzed Asymmetric Hydrogenation, Formula: C38H24F4O4P2, the publication is Organic Letters (2016), 18(4), 692-695, database is CAplus and MEDLINE.

A highly enantioselective palladium-catalyzed hydrogenation of a series of linear and cyclic α-iminophosphonates has been achieved, providing efficient access to optically active α-aminophosphonates with up to 99% ee.

Organic Letters published new progress about 503538-69-0. 503538-69-0 belongs to dioxole, auxiliary class (Atropisomeric Bisphosphine Ligands, name is (R)-5,5′-Bis(diphenylphosphino)-2,2,2′,2′-tetrafluoro-4,4′-bi-1,3-benzodioxole, and the molecular formula is C12H17BO4S, Formula: C38H24F4O4P2.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Fernando, Ganwarige Sumali N. published the artcileApplication of an Ultrasound-Assisted Extraction Method to Recover Betalains and Polyphenols from Red Beetroot Waste, Quality Control of 110204-45-0, the publication is ACS Sustainable Chemistry & Engineering (2021), 9(26), 8736-8747, database is CAplus.

Agriculture and food industries generate substantial quantities of waste material with a huge potential for bioactive ingredients to be recovered and converted into high-value chems. Red beetroot, known for its high content in betalains, natural red pigments, as well as polyphenols, fiber, and nitrate, is experiencing increasing demand, in particular as juice, which is leaving behind large amounts of waste. The present study focused on the recovery of betalains and polyphenols from dried whole beetroot and wet and dried beet pulp waste from the juicing industry. As part of an ultrasound-assisted extraction, ethanol/water-based solvent mixtures were used as they were found to be more effective than single solvents. Enzyme-assisted extraction was initially examined in the case of wet pulp but was not able to retain betalains. Betalains appear to be more stable in dried pulp. Ultrasound-assisted extraction was found to be more suitable to effectively extract both betalains and polyphenols with a high bioactive yield from dried pulp. The total betalain and polyphenol profiles as well as storage stability and antioxidant capacities were evaluated over a period of four weeks after extraction from the dried waste. During the four-week storage, betalains quickly degraded at room temperature in contrast to -20°C, whereas polyphenols and antioxidative activity were much less influenced by temperature When compared, dried samples from the beetroot juicing industry demonstrate good betalain and polyphenol extractability; thus, these data indicate that dried beet waste can serve as a good source of betalains for the color industry and other technol. sectors.

ACS Sustainable Chemistry & Engineering published new progress about 110204-45-0. 110204-45-0 belongs to dioxole, auxiliary class Flavonoids, name is 9-Hydroxy-6-phenyl-8H-[1,3]dioxolo[4,5-g]chromen-8-one, and the molecular formula is C16H10O5, Quality Control of 110204-45-0.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Scharf, Hans D. published the artcileSynthesis of furan derivatives from 4-benzoyloxy-1,3-dioxolane derivatives, Formula: C6H12O2, the publication is Angewandte Chemie (1976), 88(21), 718, database is CAplus.

Pyrolysis of dioxolanes I [R = H, R1 = Me, R2 = H, R1 = Et, R2 = Me, R1R2 = (CH2)3, (CH2)4; R = R1 = Me, R2 = H] at 230° 1.5 hr gave o-MeC6H4CO2H and 70-90% furans II. At 400°/10-3 Torr, 30-5% dioxolanes III were obtained but no II.

Angewandte Chemie published new progress about 1193-11-9. 1193-11-9 belongs to dioxole, auxiliary class Dioxolanes, name is 2,2,4-Trimethyl-1,3-dioxolane, and the molecular formula is C6H12O2, Formula: C6H12O2.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Kwiatkowski, Stefan published the artcileReactions of 1,3-dioxacyclanes with acid halides. A new synthesis for ω-halohydrin esters, Synthetic Route of 1193-11-9, the publication is Monatshefte fuer Chemie (1984), 115(6-7), 869-72, database is CAplus.

Dioxolanes I (R = R¹ = H, Me, Et; R² = H, R³ = H, Me, pentyl; R = R² = R³ = Me, R¹ = Ph) reacted with R⁴CH₂COBr (R⁴ = H, Cl) to give halohydrin esters BrCHR²CHR³O₂CCH₂R⁴ in 53-85% yield. Similarly, dioxanes II (R⁵ = Me, Et) and acyl halides R⁴CH₂COR⁶ (R⁴ = H, Cl; R⁶ = Cl, Br) gave 40-75% R⁶CH₂CH₂O₂CCH₂R⁴.

Monatshefte fuer Chemie published new progress about 1193-11-9. 1193-11-9 belongs to dioxole, auxiliary class Dioxolanes, name is 2,2,4-Trimethyl-1,3-dioxolane, and the molecular formula is C6H12O2, Synthetic Route of 1193-11-9.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Alvarez-Martin, Alba published the artcileInvestigation of volatile organic compounds in museum storage areas, Application of 2,2,4-Trimethyl-1,3-dioxolane, the publication is Air Quality, Atmosphere & Health (2021), 14(11), 1797-1809, database is CAplus.

This study investigates the complex mixture of volatile organic compounds (VOCs) released by and accumulated within a collection of historic medicinal, pharmaceutical, and cosmetic artifacts housed at the National Museum of American History (Smithsonian Institution). In recent years, staff have become concerned, both for the safety of the objects and for personnel working in the collection, about strong unremediated odors accumulating within several storage cabinets. Museum staff also wondered if non-odorous off-gassing might need remediation. Solid-phase microextraction combined with gas chromatog.-mass spectrometry anal. (SPME-GC-MS) was used to identify VOCs present in the storage room housing the collection. Over 160 compounds were detected and identified overall. Among these, 49 appeared to be directly related to ingredients used in the manufacture of many collection items. The results of the study suggest that SPME-GC-MS can be a strong tool for the rapid screening of multicomponent museum collections exhibiting off-gassing problems, before the pursuit of other more tedious anal. approaches. Addnl., the study reveals valuable insight into the characteristic volatile emission of historic medicinal, pharmaceutical, and cosmetic artifacts, increasing understanding of, and decision-making for, similar collections of objects. Eventually, it is hoped that this information can be used to inform mitigation strategies for the capture and reduction of VOCs in collections storage areas.

Air Quality, Atmosphere & Health published new progress about 1193-11-9. 1193-11-9 belongs to dioxole, auxiliary class Dioxolanes, name is 2,2,4-Trimethyl-1,3-dioxolane, and the molecular formula is C6H12O2, Application of 2,2,4-Trimethyl-1,3-dioxolane.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem