Category: 27943-46-0

Song, Yulong published the artcilePalladium-Catalyzed Triple Cyclization of 2,7-Alkadiynylic Carbonates with 2-Butyne-1,4-diol or 2-Butyne-1,4-disulfonamides, COA of Formula: C10H16O2, the publication is Advanced Synthesis & Catalysis (2019), 361(13), 3228-3233, database is CAplus.

A palladium-catalyzed highly E-selective triple cyclization of 2,7-alkadiynylic carbonates with 2-butyne-1,4-diol or 2-butyne-1,4-disulfonamides to construct different tricycles such as 6,8-dihydrobenzo[1,2-c:3,4-c’]difuran-1(3H)-one and 1,3,6,7-tetrahydro-8H-furo[3,4-e]isoindol-8-one derivatives were reported. The alkene group produced and the nucleophilic unit kept in the product provided further opportunity to construct more complicated polycycles. The control experiments showed that the reaction mainly go through an intermol. insertion of the alkynes before the lactonization or lactamization.

Advanced Synthesis & Catalysis published new progress about 27943-46-0. 27943-46-0 belongs to tetrahydropyran, auxiliary class Tetrahydropyran,Alkynyl,Ether, name is 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran, and the molecular formula is Al2H32O28S3, COA of Formula: C10H16O2.

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

Chen, Ji published the artcileCatalytic vinylogous cross-coupling reactions of rhenium vinylcarbenoids, Formula: C10H16O2, the publication is Chemical Science (2018), 9(9), 2489-2492, database is CAplus and MEDLINE.

The first example of the rhenium-catalyzed allylation reaction of indoles by means of cross-coupling with propargyl ethers as non-obvious allylating reagents is reported. Data from isotope-labeling and kinetic isotopic studies are consistent with a mechanism that proceeds by vinylidene formation as the rate determining step, followed by 1,5-hydride shift to generate a key rhenium vinylcarbenoid complex. Bond formation occurs at the vinylogous site and the reaction is conveniently carried out in air.

Chemical Science published new progress about 27943-46-0. 27943-46-0 belongs to tetrahydropyran, auxiliary class Tetrahydropyran,Alkynyl,Ether, name is 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran, and the molecular formula is C10H16O2, Formula: C10H16O2.

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

Michalak, Karol published the artcileTotal Synthesis of a CD-Ring: Side-Chain Building Block for Preparing 17-epi-Calcitriol Derivatives from the Hajos-Parrish Dione, Formula: C10H16O2, the publication is Journal of Organic Chemistry (2011), 76(16), 6906-6911, database is CAplus and MEDLINE.

An efficient synthesis of the key building block I for 17-epi-calcitriol from the Hajos-Parrish dione involving a sequence of diastereoselective transformation of the azulene core and the side-chain construction is presented.

Journal of Organic Chemistry published new progress about 27943-46-0. 27943-46-0 belongs to tetrahydropyran, auxiliary class Tetrahydropyran,Alkynyl,Ether, name is 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran, and the molecular formula is C10H16O2, Formula: C10H16O2.

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

Smith, Edward H. published the artcileCoupling of Alkynyllithiums to 1,3-Diynes by Reaction with Dichlorobis(triphenylphosphine)nickel(II) in the Presence of Triphenylphosphine and Guanidine or Amidine Bases, Application of 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran, the publication is Organometallics (1994), 13(12), 5169-72, database is CAplus.

Reaction of alkynyllithiums with NiCl₂(PPh₃)₂ and 2L [L = PPh₃, tetramethylguanidine, 1,8-diazabicyclo[5.4.0]undec-7-ene, ArN:CMeNMe₂, or ArN:C(NMe₂)NMe₂ (Ar = aryl group)] at low temperatures in THF resulted in moderate to good yields of the homocoupled products, 1,3-diynes. Experiments on cross-coupling suggested that the 1,3-diynes are produced by reductive elimination from intermediate dialkynylnickel species.

Organometallics published new progress about 27943-46-0. 27943-46-0 belongs to tetrahydropyran, auxiliary class Tetrahydropyran,Alkynyl,Ether, name is 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran, and the molecular formula is C7H8O3, Application of 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran.

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

Bowden, Kenneth published the artcileThe synthesis of some compounds related to muscarine, SDS of cas: 27943-46-0, the publication is Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) (1978), 1493-504, database is CAplus.

New compounds related to muscarine (I) were prepared by cyclization of aminoacetylenic glycols, themselves prepared by condensation of novel aminoacetaldehyde hemiacetal salts with alkynol derivatives E.g., Me₂N⁺HCH₂CH(OH)(OEt) Cl^– with PhCH₂OCMe₂CCH gave 13-16% PhCH₂OCMe₂CCCH(OH)CH₂NMe₂, which with HgSO₄/H₂SO₄ gave 15% THF derivative II.

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) published new progress about 27943-46-0. 27943-46-0 belongs to tetrahydropyran, auxiliary class Tetrahydropyran,Alkynyl,Ether, name is 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran, and the molecular formula is C10H16O2, SDS of cas: 27943-46-0.

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

Kikukawa, Kiyoshi published the artcileRegioselective hydrostannation of terminal acetylenes under transition metal catalysis, Application In Synthesis of 27943-46-0, the publication is Chemistry Letters (1988), 881-4, database is CAplus.

Rhodium complexes [RhClL₃, RhCl(CO)L₂ (L = PPh₃)], [RhCl(COD)]₂ (COD = 1,5-cyclooctadiene)] catalyze the hydrostannylation of terminal acetylenes, RCCH (R = Ph, Me₃Si, etc.) with Bu₃SnH to produce RC(SnBu₃):CH₂ selectively. Other transition metal complexes [MCl₂L₂ (M = Ni, Pd, Pt, Co)] are also active for the hydrostannylation, but with less selectivity.

Chemistry Letters published new progress about 27943-46-0. 27943-46-0 belongs to tetrahydropyran, auxiliary class Tetrahydropyran,Alkynyl,Ether, name is 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran, and the molecular formula is C10H16O2, Application In Synthesis of 27943-46-0.

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

Jacobson, Roy published the artcileNaturally occurring spirocyclic ketals from lactones. III, Related Products of tetrahydropyran, the publication is Journal of Organic Chemistry (1982), 47(16), 3140-2, database is CAplus.

Treatment of (S)-propylene oxide with Li acetylide-ethylenediamine complex in NH₃(l) gave (S)-4-pentyn-2-ol which was converted to the tetrahydropyranyl ether; the lithium anion was generated followed by condensation with butyrolactone to give (7S)-I with optical purity of 80% identical to the ketals isolated from Andrena and Vespula species. Addnl. obtained was II identical to that isolated from Japanese hop oil. A simplified synthesis of chalcogran (III) from γ-caprolactone and the Li reagent prepared from Br(CH₂)₃OCH(OEt)Me was described.

Journal of Organic Chemistry published new progress about 27943-46-0. 27943-46-0 belongs to tetrahydropyran, auxiliary class Tetrahydropyran,Alkynyl,Ether, name is 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran, and the molecular formula is C10H16O2, Related Products of tetrahydropyran.

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

Kimura, Masanari published the artcileSilver(I)-catalyzed aminocyclization of 2,3-butadienyl and 3,4-pentadienyl carbamates: an efficient and stereoselective synthesis of 4-vinyl-2-oxazolidinones and 4-vinyltetrahydro-2H-1,3-oxazin-2-ones, Quality Control of 27943-46-0, the publication is Bulletin of the Chemical Society of Japan (1995), 68(6), 1689-705, database is CAplus.

Silver(I) salts in combination with an appropriate base (mostly triethylamine) catalyzed the aminocyclization of N-substituted 2,3-butadienyl carbamates I (benzene, 50°) to provide 4-vinyl-2-oxazolidinones II in good yields. The stereoselectivity (trans-II/cis-II) ranged from 1.4 for C₅-Me to >30 for C₅-Ph, isopropenyl, and t-Bu derivatives 3,4-Pentadienyl tosylcarbamates III, the one-carbon higher homologues of I, underwent a similar cyclization to give 4-vinyltetrahydro-2H-1,3-oxazin-2-one IV in synthetically useful yields and in higher trans selectivities than I.

Bulletin of the Chemical Society of Japan published new progress about 27943-46-0. 27943-46-0 belongs to tetrahydropyran, auxiliary class Tetrahydropyran,Alkynyl,Ether, name is 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran, and the molecular formula is C10H16O2, Quality Control of 27943-46-0.

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

Wang, Xiao-jun published the artcileRegioselective Synthesis of Unsymmetrical 3,5-Dialkyl-1-arylpyrazoles, Recommanded Product: 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran, the publication is Organic Letters (2000), 2(20), 3107-3109, database is CAplus and MEDLINE.

3-Alkoxylmethyl-5-alkylpyrazoles undergo regioselective N-arylation with 4-fluoronitrobenzene in the presence of base to yield the corresponding 1-(4-nitro-phenyl)pyrazoles. Further elaboration of these intermediates furnishes a practical synthesis of unsym. 3,5-dialkyl-1-arylpyrazoles. A tentative explanation of the observed regioselectivities is provided.

Organic Letters published new progress about 27943-46-0. 27943-46-0 belongs to tetrahydropyran, auxiliary class Tetrahydropyran,Alkynyl,Ether, name is 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran, and the molecular formula is C7H6Cl2, Recommanded Product: 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran.

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

Schneiders, Gail E. published the artcileSynthesis of benzofurans by the action of copper on terminal alkynes and o-halophenols, Application In Synthesis of 27943-46-0, the publication is Synthetic Communications (1980), 10(9), 699-705, database is CAplus.

Dehydrotremetone (I) was prepared by cyclization of 3,4-I(HO)C₆H₃Ac with HCCCMe:CH₂ in refluxing DMF containing K₂CO₃ and activated Cu powder. (Hydroxyisopropyl)benzofuran II, isolated previously from Podachaenium eminens, was similarly prepared from the tetrahydropyranyl ether III.

Synthetic Communications published new progress about 27943-46-0. 27943-46-0 belongs to tetrahydropyran, auxiliary class Tetrahydropyran,Alkynyl,Ether, name is 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran, and the molecular formula is C10H16O2, Application In Synthesis of 27943-46-0.

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