t-butyl-tetrahydro-2,6,6-trimethyl-2-(4-methylphenyl)-4-oxo-4H-pyran-3-carboxylate

Base Information

Chemical Name:t-butyl-tetrahydro-2,6,6-trimethyl-2-(4-methylphenyl)-4-oxo-4H-pyran-3-carboxylate
CAS No.:104120-84-5
Molecular Formula:C₂₀H₂₈O₄
Molecular Weight:332.44
Hs Code.:

Synonyms:t-butyl-tetrahydro-2,6,6-trimethyl-2-(4-methylphenyl)-4-oxo-4H-pyran-3-carboxylate

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Business phase:: The product has achieved commercial mass production^*data from LookChem market partment

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Chemical Property of t-butyl-tetrahydro-2,6,6-trimethyl-2-(4-methylphenyl)-4-oxo-4H-pyran-3-carboxylate

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Technology Process of t-butyl-tetrahydro-2,6,6-trimethyl-2-(4-methylphenyl)-4-oxo-4H-pyran-3-carboxylate

There total 3 articles about t-butyl-tetrahydro-2,6,6-trimethyl-2-(4-methylphenyl)-4-oxo-4H-pyran-3-carboxylate 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: 83.0%

: 104106-53-8
t-bytil 3,4-dihydro-2,2,6-trimethyl-4-oxo-2H-pyran-5-carboxylate

: 2417-95-0
p-tolyllithium

: 104120-84-5
t-butyl-tetrahydro-2,6,6-trimethyl-2-(4-methylphenyl)-4-oxo-4H-pyran-3-carboxylate

Guidance literature:: With copper(l) iodide; In diethyl ether; at -50 deg C, 2h; at 0 deg C, 4h; at room temperature 14h;
DOI:10.1016/S0040-4039(00)94935-9

Reference yield:

: 1694-31-1
tert-butyl acetoacetate

: 104120-84-5
t-butyl-tetrahydro-2,6,6-trimethyl-2-(4-methylphenyl)-4-oxo-4H-pyran-3-carboxylate

Guidance literature:: Multi-step reaction with 2 steps

1: 1.)NaH / 1.) THF, reflux for 2h, then cooled 2.) for 2h 0 deg C, then for 12h room temperature

2: 83 percent / CuI / diethyl ether / at -50 deg C, 2h; at 0 deg C, 4h; at room temperature 14h

With copper(l) iodide; sodium hydride; In diethyl ether;
DOI:10.1016/S0040-4039(00)94935-9

Reference yield:

: 104106-52-7
3-bromo-1-chloro-3-methyl-2-butanone

: 104120-84-5
t-butyl-tetrahydro-2,6,6-trimethyl-2-(4-methylphenyl)-4-oxo-4H-pyran-3-carboxylate

Guidance literature:: Multi-step reaction with 2 steps

1: 1.)NaH / 1.) THF, reflux for 2h, then cooled 2.) for 2h 0 deg C, then for 12h room temperature

2: 83 percent / CuI / diethyl ether / at -50 deg C, 2h; at 0 deg C, 4h; at room temperature 14h

With copper(l) iodide; sodium hydride; In diethyl ether;
DOI:10.1016/S0040-4039(00)94935-9