(8a-benzyl-6-ethylidene-3,5-dioxo-7-vinyl-6,8a-dihydro-5H-oxazolo[3,4-a]pyridin-1-ylideneamino)-acetic acid methyl ester

Base Information

Chemical Name:(8a-benzyl-6-ethylidene-3,5-dioxo-7-vinyl-6,8a-dihydro-5H-oxazolo[3,4-a]pyridin-1-ylideneamino)-acetic acid methyl ester
CAS No.:933996-07-7
Molecular Formula:C₂₁H₂₀N₂O₅
Molecular Weight:380.4
Hs Code.:

(8a-benzyl-6-ethylidene-3,5-dioxo-7-vinyl-6,8a-dihydro-5<i>H</i>-oxazolo[3,4-<i>a</i>]pyridin-1-ylideneamino)-acetic acid methyl ester

Synonyms:(8a-benzyl-6-ethylidene-3,5-dioxo-7-vinyl-6,8a-dihydro-5H-oxazolo[3,4-a]pyridin-1-ylideneamino)-acetic acid methyl ester

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Chemical Property of (8a-benzyl-6-ethylidene-3,5-dioxo-7-vinyl-6,8a-dihydro-5H-oxazolo[3,4-a]pyridin-1-ylideneamino)-acetic acid methyl ester

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Technology Process of (8a-benzyl-6-ethylidene-3,5-dioxo-7-vinyl-6,8a-dihydro-5H-oxazolo[3,4-a]pyridin-1-ylideneamino)-acetic acid methyl ester

There total 4 articles about (8a-benzyl-6-ethylidene-3,5-dioxo-7-vinyl-6,8a-dihydro-5H-oxazolo[3,4-a]pyridin-1-ylideneamino)-acetic acid methyl ester 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: 85.0%

: 933996-04-4
[(2-benzyl-5-ethylidene-6-oxo-4-vinyl-1,2,5,6-tetrahydro-pyridine-2-carbonyl)-amino]-acetic acid methyl ester

: 75-44-5
phosgene

: 933996-07-7
(8a-benzyl-6-ethylidene-3,5-dioxo-7-vinyl-6,8a-dihydro-5H-oxazolo[3,4-a]pyridin-1-ylideneamino)-acetic acid methyl ester

Guidance literature:: With triethylamine; In dichloromethane; toluene; at -10 ℃; for 0.166667h;
DOI:10.3987/com-06-s(w)36

Reference yield:

: 933996-04-4
[(2-benzyl-5-ethylidene-6-oxo-4-vinyl-1,2,5,6-tetrahydro-pyridine-2-carbonyl)-amino]-acetic acid methyl ester

: 121-44-8
triethylamine

: 933996-07-7
(8a-benzyl-6-ethylidene-3,5-dioxo-7-vinyl-6,8a-dihydro-5H-oxazolo[3,4-a]pyridin-1-ylideneamino)-acetic acid methyl ester

: C₂₆H₂₉N₃O₆

Guidance literature:: With phosgene; In dichloromethane; toluene; at 20 ℃; for 0.5h; Title compound not separated from byproducts.;
DOI:10.1016/j.tet.2008.02.033

Reference yield:

: 924906-47-8
2-benzyl-5-ethylidene-6-oxo-4-vinyl-1,2,5,6-tetrahydropyridine-2-carboxylic acid methyl ester

: 933996-07-7
(8a-benzyl-6-ethylidene-3,5-dioxo-7-vinyl-6,8a-dihydro-5H-oxazolo[3,4-a]pyridin-1-ylideneamino)-acetic acid methyl ester

Guidance literature:: Multi-step reaction with 3 steps

1: LiOH*H₂O / tetrahydrofuran; H₂O / 0.08 h / 20 °C

2: 0.710 g / 1-hydroxybenzotriazole; 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide*HCl; 4-dimethylaminopyridine / CH₂Cl₂ / 1.5 h / 20 °C

3: 85 percent / Et₃N / CH₂Cl₂; toluene / 0.17 h / -10 °C

With dmap; lithium hydroxide; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine; In tetrahydrofuran; dichloromethane; water; toluene;
DOI:10.3987/com-06-s(w)36