4-acetylamino-3,4-dihydro-6-methyl-4'S,5'S-bis(2-methylphenyl)-5-(1-oxoethyl)spiro[2H-pyran-2,2'-[1,3]dioxolan]

Base Information

Chemical Name:4-acetylamino-3,4-dihydro-6-methyl-4'S,5'S-bis(2-methylphenyl)-5-(1-oxoethyl)spiro[2H-pyran-2,2'-[1,3]dioxolan]
CAS No.:287978-07-8
Molecular Formula:C₂₆H₂₉NO₅
Molecular Weight:435.52
Hs Code.:

Synonyms:4-acetylamino-3,4-dihydro-6-methyl-4'S,5'S-bis(2-methylphenyl)-5-(1-oxoethyl)spiro[2H-pyran-2,2'-[1,3]dioxolan]

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Chemical Property of 4-acetylamino-3,4-dihydro-6-methyl-4'S,5'S-bis(2-methylphenyl)-5-(1-oxoethyl)spiro[2H-pyran-2,2'-[1,3]dioxolan]

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Technology Process of 4-acetylamino-3,4-dihydro-6-methyl-4'S,5'S-bis(2-methylphenyl)-5-(1-oxoethyl)spiro[2H-pyran-2,2'-[1,3]dioxolan]

There total 4 articles about 4-acetylamino-3,4-dihydro-6-methyl-4'S,5'S-bis(2-methylphenyl)-5-(1-oxoethyl)spiro[2H-pyran-2,2'-[1,3]dioxolan] 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:

: 287978-05-6
N-(2-(1-oxoethyl)-3-oxobut-1-enyl)ethanamide

: 191283-11-1
(S,S)-4,5-bis(2-methylphenyl)-2-methylene-1,3-dioxolane

: 287978-07-8
4-acetylamino-3,4-dihydro-6-methyl-4'S,5'S-bis(2-methylphenyl)-5-(1-oxoethyl)spiro[2H-pyran-2,2'-[1,3]dioxolan]

: 4-acetylamino-3,4-dihydro-6-methyl-4'S,5'S-bis(2-methylphenyl)-5-(1-oxoethyl)spiro[2H-pyran-2,2'-[1,3]dioxolan]

Guidance literature:: In tetrahydrofuran; at -15 ℃; for 96h; Title compound not separated from byproducts;
DOI:10.1016/S0040-4039(00)00407-X

Reference yield:

: 123-54-6,81235-32-7
acetylacetone

: 287978-07-8
4-acetylamino-3,4-dihydro-6-methyl-4'S,5'S-bis(2-methylphenyl)-5-(1-oxoethyl)spiro[2H-pyran-2,2'-[1,3]dioxolan]

Guidance literature:: Multi-step reaction with 3 steps

1: acetic anhydride / 4 h / Heating

2: 5.5 g / tetrahydrofuran / 4 h / Heating

3: tetrahydrofuran / 120 h / -15 °C

With acetic anhydride; In tetrahydrofuran;
DOI:10.1016/S0040-4020(02)01523-5

Reference yield:

: 172277-06-4
(4S,5S)-2-Bromomethyl-4,5-di-o-tolyl-[1,3]dioxolane

: 287978-07-8
4-acetylamino-3,4-dihydro-6-methyl-4'S,5'S-bis(2-methylphenyl)-5-(1-oxoethyl)spiro[2H-pyran-2,2'-[1,3]dioxolan]

Guidance literature:: Multi-step reaction with 2 steps

1: 90 percent / potassium t-butoxide; methyltrioctylammonium chloride / tetrahydrofuran / -15 °C

2: tetrahydrofuran / 120 h / -15 °C

With potassium tert-butylate; Aliquat 336; In tetrahydrofuran;
DOI:10.1016/S0040-4020(02)01523-5