5-bromo-3-methyl-4,6,6-triphenyl-3,6-dihydro-2H-pyran

Base Information

Chemical Name:5-bromo-3-methyl-4,6,6-triphenyl-3,6-dihydro-2H-pyran
CAS No.:1310712-19-6
Molecular Formula:C₂₄H₂₁BrO
Molecular Weight:405.334
Hs Code.:

Synonyms:5-bromo-3-methyl-4,6,6-triphenyl-3,6-dihydro-2H-pyran

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Chemical Property of 5-bromo-3-methyl-4,6,6-triphenyl-3,6-dihydro-2H-pyran

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Technology Process of 5-bromo-3-methyl-4,6,6-triphenyl-3,6-dihydro-2H-pyran

There total 7 articles about 5-bromo-3-methyl-4,6,6-triphenyl-3,6-dihydro-2H-pyran which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 64.0%

: 1310712-14-1
2-methyl-3,5,5-triphenylpenta-3,4-dien-1-ol

: 1310712-19-6
5-bromo-3-methyl-4,6,6-triphenyl-3,6-dihydro-2H-pyran

Guidance literature:: With lithium bromide monohydrate; oxygen; palladium diacetate; copper(II) acetate monohydrate; potassium carbonate; In acetonitrile; at 20 ℃;
DOI:10.1002/chem.201100703

Reference yield:

: 1310711-79-5
ethyl 2-methyl-5,5-diphenylpenta-2,3,4-trienoate

: 1310712-19-6
5-bromo-3-methyl-4,6,6-triphenyl-3,6-dihydro-2H-pyran

Guidance literature:: Multi-step reaction with 3 steps

1: [Pd((CN(C₁₀H₆)C₆H₄NCH₃)2)(H₂O)2]⁽²⁺⁾*2O₃SCF₃^(1-)=[Pd((CN(C₁₀H₆)C₆H₄NCH₃)2)(H₂O)2][O₃SCF₃]2; triethylamine / 1,4-dioxane / 10 h / 50 °C / Inert atmosphere

2: lithium aluminium tetrahydride / diethyl ether / -78 - -10 °C / Inert atmosphere

3: lithium bromide monohydrate; oxygen; palladium diacetate; copper(II) acetate monohydrate; potassium carbonate / acetonitrile / 20 °C

With lithium aluminium tetrahydride; lithium bromide monohydrate; [Pd((CN(C₁₀H₆)C₆H₄NCH₃)2)(H₂O)2]⁽²⁺⁾*2O₃SCF₃^(1-)=[Pd((CN(C₁₀H₆)C₆H₄NCH₃)2)(H₂O)2][O₃SCF₃]2; oxygen; palladium diacetate; copper(II) acetate monohydrate; potassium carbonate; triethylamine; In 1,4-dioxane; diethyl ether; acetonitrile;
DOI:10.1002/chem.201100703

Reference yield:

: 52072-24-9
2-bromo-1,1-diphenyl-propan-1-ol

: 1310712-19-6
5-bromo-3-methyl-4,6,6-triphenyl-3,6-dihydro-2H-pyran

Guidance literature:: Multi-step reaction with 6 steps

1: bromine / chloroform / 3 h / Irradiation; Inert atmosphere

2: toluene / 3 h / 80 °C / Inert atmosphere

3: triethylamine / acetonitrile / 0 °C / Inert atmosphere

4: [Pd((CN(C₁₀H₆)C₆H₄NCH₃)2)(H₂O)2]⁽²⁺⁾*2O₃SCF₃^(1-)=[Pd((CN(C₁₀H₆)C₆H₄NCH₃)2)(H₂O)2][O₃SCF₃]2; triethylamine / 1,4-dioxane / 10 h / 50 °C / Inert atmosphere

5: lithium aluminium tetrahydride / diethyl ether / -78 - -10 °C / Inert atmosphere

6: lithium bromide monohydrate; oxygen; palladium diacetate; copper(II) acetate monohydrate; potassium carbonate / acetonitrile / 20 °C

With lithium aluminium tetrahydride; lithium bromide monohydrate; [Pd((CN(C₁₀H₆)C₆H₄NCH₃)2)(H₂O)2]⁽²⁺⁾*2O₃SCF₃^(1-)=[Pd((CN(C₁₀H₆)C₆H₄NCH₃)2)(H₂O)2][O₃SCF₃]2; bromine; oxygen; palladium diacetate; copper(II) acetate monohydrate; potassium carbonate; triethylamine; In 1,4-dioxane; diethyl ether; chloroform; toluene; acetonitrile;
DOI:10.1002/chem.201100703