Dioxole related

Li, Sifeng published the artcilePalladium/Zinc Co-Catalyzed syn-Stereoselectively Asymmetric Ring-Opening Reaction of Oxabenzonorbornadienes with Phenols, Computed Properties of 503538-69-0, the publication is Chemistry – A European Journal (2015), 21(25), 9003-9007, database is CAplus and MEDLINE.

A new palladium/zinc co-catalyst system associated with chiral (R)-Difluorphos for asym. ring-opening reaction of oxabenzonorbornadienes with phenols is reported. This catalyst system allows the formation of cis-2-aryloxy-1,2-dihydronaphthalen-1-ol I (Ar = Ph, 4-FC₆H₄, 4-ClC₆H₄, 4-BrC₆H₄, etc.) and II (R = 5,8-(OCH₃)₂, 5,8-(CH₃)₂, 6,7-Br₂, 6,7-OCH₂O, 6,7-(OCH₃)₂) products in good yields (up to 95 % yield) with excellent enantioselectivities (up to 99 % ee). The cis-configuration of the product has been confirmed by X-ray crystal structure anal. To the best of our knowledge, it represents the first example in ring-opening reactions of bicycloalkenes with heteronucleophiles in a syn-stereoselective manner.

Chemistry – A European Journal 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

Tu, Yuan-hong published the artcileSynthesis of vanillin 1,2-propylene glycol acetal catalyzed by silica supported ferric sulfate, SDS of cas: 68527-74-2, the publication is Riyong Huaxue Gongye (2008), 38(1), 39-41, database is CAplus.

Vanillin 1,2-propylene glycol acetal was synthesized using 1,2 -propylene glycol and vanillin as starting materials and silica supported ferric sulfate as catalyst. Effects of factors on yield of product, such as molar ratio of the reactants, reaction time, catalyst dosage and its stability, were investigated. Exptl. results showed that the preferential conditions were as follows: based on 0.1 mol of vanillin, the molar ratio of vanillin to 1,2 -propylene glycol was 1.0: 1.4; the dosage of catalyst was 2.5% of the total weight of the reactants; the amount of cyclohexane as water stripping agent was 12 mL; the reaction time was 3.0 h; under these conditions, the yield could achieve 86.0%.

Riyong Huaxue Gongye published new progress about 68527-74-2. 68527-74-2 belongs to dioxole, auxiliary class Dioxolane,Benzene,Phenol,Ether, name is 2-Methoxy-4-(4-methyl-1,3-dioxolan-2-yl)phenol, and the molecular formula is C6H10F3NO, SDS of cas: 68527-74-2.

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

Shao, Lin-Jun published the artcileSynthesis of melamine-formaldehyde resin functionalized with sulfonic groups and its catalytic activities, HPLC of Formula: 177-10-6, the publication is Chemical Papers (2014), 68(7), 983-988, database is CAplus.

Spherical melamine-formaldehyde resin (MFR) particles were synthesized using the condensation reaction of melamine and formaldehyde with PEG-2000 as an additive. After thermal treatment at 200°C and then sulfonation by chlorosulphuric acid, an MFR-supported strong acid catalyst (SMFR) was prepared with an acidity of 3.23 mmol g^-1. This new acid catalyst was evaluated in the reactions of esterification and acetalization, with the results indicating that this novel acid catalyst was highly efficient in the traditional acid-catalyzed reaction. Its high activity, stability and reusability give it great potential for “green” chem. processes.

Chemical Papers 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 C5H12O2, HPLC of Formula: 177-10-6.

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

Shao, Linjun published the artcileSulfonic groups functionalized preoxidated polyacrylonitrile nanofibers and its catalytic applications, Application In Synthesis of 177-10-6, the publication is Applied Catalysis, A: General (2012), 133-137, database is CAplus.

A SO₃H-bearing nanofiber mat was synthesized and investigated as a novel heterogeneous acid catalyst. Preoxidated polyacrylonitrile nanofiber mat was prepared via electrospinning and heat treatment, and then reacted with chlorosulfuric acid to introduce the sulfonic groups. The nanofiber mat owned high acidity of 2.99 mmol/g. The preoxidation and sulfonation were examined by FT-IR spectroscopy, elemental anal. and X-ray diffraction spectroscopy (XRD). The fiber morphologies were characterized by SEM (SEM). The catalytic activities and reuse of the prepared nanofiber mat solid acid catalyst have been evaluated for the acetalization and esterification. The regular fiber mat structure could significantly facilitate the recovery and reuse of the catalyst. The excellent catalytic performance and easy recycling made the novel fiber mat solid acid hold great potential for the green chem. processes.

Applied Catalysis, A: General 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 C7H13NO2, Application In Synthesis of 177-10-6.

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

Liu, Yu-ping published the artcileSynthesis of vanillin propylene glycol acetal catalyzed by NaHSO₄, Synthetic Route of 68527-74-2, the publication is Jingxi Huagong (2004), 21(11), 831-832, 846, database is CAplus.

Synthesis of vanillin propylene glycol acetal (I) was studied. Factors influencing the yield, such as different dehydrating agents, catalyst amounts, mole ratio of materials, were discussed and the better reaction conditions were determined Thus, 0.48 mol propylene glycol reacted with 0.2 mol vanillin in the presence of 1 g NaHSO₄ as catalyst and 100 mL benzene to give I in 85.2% yield. The structure of I was identified by means of GC, refractive index, IR and GC-MS.

Jingxi Huagong published new progress about 68527-74-2. 68527-74-2 belongs to dioxole, auxiliary class Dioxolane,Benzene,Phenol,Ether, name is 2-Methoxy-4-(4-methyl-1,3-dioxolan-2-yl)phenol, and the molecular formula is C11H14O4, Synthetic Route of 68527-74-2.

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

Petrov, D. A. published the artcileInteraction of Unsymmetrical 1,3-Dioxolanes with Methyl Diazoacetate, Application In Synthesis of 1193-11-9, the publication is Doklady Chemistry (Translation of the chemistry section of Doklady Akademii Nauk) (2002), 385(4-6), 207-208, database is CAplus.

The catalytic reaction of 2,2,4-trimethyl-1,3-dioxolane and 2-phenyl-4-methyl-1,3-dioxolane with Me diazoacetate to form substituted 1,4-dioxane compounds was studied via ¹H- and ¹³C-NMR techniques.

Doklady Chemistry (Translation of the chemistry section of Doklady Akademii Nauk) 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 In Synthesis of 1193-11-9.

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

Petrov, D. A. published the artcileCatalytic reaction between polysubstituted 1,3-dioxolanes and diazoacetic ester, Recommanded Product: 2,2,4-Trimethyl-1,3-dioxolane, the publication is Izvestiya Vysshikh Uchebnykh Zavedenii, Khimiya i Khimicheskaya Tekhnologiya (2003), 46(6), 40-42, database is CAplus.

Polysubstituted 1,3-dioxolanes reacted stereoselectively with Et diazoacetate in the presence of BF₃·OEt₂, cupric triflate, or Rh₂(OAc)₄ as catalyst to give Et 1,4-dioxane-2-acetates.

Izvestiya Vysshikh Uchebnykh Zavedenii, Khimiya i Khimicheskaya Tekhnologiya 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, Recommanded Product: 2,2,4-Trimethyl-1,3-dioxolane.

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

Maj, Anna M. published the artcileHighly enantioselective hydrogenation of new 2-functionalized quinoline derivatives, Category: dioxole, the publication is Tetrahedron Letters (2012), 53(35), 4747-4750, database is CAplus.

The asym. hydrogenation of a new series of 2-functionalized quinolines has been developed in the presence of in situ generated catalysts obtained from [Ir(cod)Cl]₂/(R)-bisphosphine/I₂ combinations. The enantioselectivity levels were as high as 84-94% ee for the synthesis of 1,2,3,4-tetrahydroquinolines.

Tetrahedron 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 C38H24F4O4P2, Category: dioxole.

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

Maj, Anna M. published the artcileSynthesis of new chiral 2-functionalized-1,2,3,4-tetrahydroquinoline derivatives via asymmetric hydrogenation of substituted quinolines, Related Products of dioxole, the publication is Tetrahedron (2013), 69(44), 9322-9328, database is CAplus.

The asym. hydrogenation of a series of quinolines substituted by a variety of functionalized groups linked to the C2 carbon atom is providing access to optically enriched 2-functionalized 1,2,3,4-tetrahydroquinolines in the presence of in situ generated catalysts from [Ir(cod)Cl]₂, a bisphosphine, and iodine. The enantioselectivity levels were as high as 96% ee.

Tetrahedron 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, Related Products of dioxole.

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

Aida, Yukimasa published the artcileRhodium-Catalyzed Asymmetric [2 + 2 + 2] Cycloaddition of α,ω-Diynes with Unsymmetrical 1,2-Disubstituted Alkenes, Category: dioxole, the publication is Organic Letters (2016), 18(11), 2672-2675, database is CAplus and MEDLINE.

It has been established that a cationic rhodium(I)/axially chiral biaryl bisphosphine complex catalyzes the asym. [2 + 2 + 2] cycloaddition of α,ω-diynes with electron-rich and unstrained unsym. 1,2-disubstituted alkenes to give chiral multicyclic compounds with good yields and ee values. Interestingly, enantioselectivity highly depends on the structures of α,ω-diynes used presumably due to the presence of two distinct reaction pathways.

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 C38H24F4O4P2, Category: dioxole.

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