(3R,4S)-4-<<4-<(1,1-dimethylethoxy)carbonyl>phenyl>oxy>-3-ethyl-3-methyl-1-<<(phenylmethyl)amino>carbonyl>azetidin-2-one

Base Information

Chemical Name:(3R,4S)-4-<<4-<(1,1-dimethylethoxy)carbonyl>phenyl>oxy>-3-ethyl-3-methyl-1-<<(phenylmethyl)amino>carbonyl>azetidin-2-one
CAS No.:142950-71-8
Molecular Formula:C₂₅H₃₀N₂O₅
Molecular Weight:438.524
Hs Code.:

Synonyms:(3R,4S)-4-<<4-<(1,1-dimethylethoxy)carbonyl>phenyl>oxy>-3-ethyl-3-methyl-1-<<(phenylmethyl)amino>carbonyl>azetidin-2-one

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Chemical Property of (3R,4S)-4-<<4-<(1,1-dimethylethoxy)carbonyl>phenyl>oxy>-3-ethyl-3-methyl-1-<<(phenylmethyl)amino>carbonyl>azetidin-2-one

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Technology Process of (3R,4S)-4-<<4-<(1,1-dimethylethoxy)carbonyl>phenyl>oxy>-3-ethyl-3-methyl-1-<<(phenylmethyl)amino>carbonyl>azetidin-2-one

There total 5 articles about (3R,4S)-4-<<4-<(1,1-dimethylethoxy)carbonyl>phenyl>oxy>-3-ethyl-3-methyl-1-<<(phenylmethyl)amino>carbonyl>azetidin-2-one 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:

: 3173-56-6
benzyl isothiocyanate

: 142935-42-0
(3R,4S)-4-<<4-<(1,1-dimethylethoxy)carbonyl>phenyl>oxy>-3-ethyl-3-methylazetidin-2-one

: 142950-71-8
(3R,4S)-4-<<4-<(1,1-dimethylethoxy)carbonyl>phenyl>oxy>-3-ethyl-3-methyl-1-<<(phenylmethyl)amino>carbonyl>azetidin-2-one

Guidance literature:: With dmap; triethylamine; In dichloromethane; for 16h; Ambient temperature;
DOI:10.1021/jm00013a021

Reference yield:

: 25804-49-3
tert-butyl 4-hydroxybenzoate

: 142950-71-8
(3R,4S)-4-<<4-<(1,1-dimethylethoxy)carbonyl>phenyl>oxy>-3-ethyl-3-methyl-1-<<(phenylmethyl)amino>carbonyl>azetidin-2-one

Guidance literature:: Multi-step reaction with 3 steps

1: 45 percent / aq. NaOH / acetone / 64 h / Ambient temperature

2: 35 percent / 1,1-dimethylethyl 4-hydroxybenzoate, 2N aq. NaOH / acetone / 24 h / Ambient temperature

3: 2.1 g / Et₃N, DMAP / CH₂Cl₂ / 16 h / Ambient temperature

With dmap; sodium hydroxide; tert-butyl 4-hydroxybenzoate; triethylamine; In dichloromethane; acetone;
DOI:10.1021/jm00013a021

Reference yield:

: 143005-44-1
(3R,4S)-1-<(1,1-dimethylethyl)dimethylsilyl>-3-ethyl-3-methyl-2-oxoazetidine-4-carboxylic acid

: 142950-71-8
(3R,4S)-4-<<4-<(1,1-dimethylethoxy)carbonyl>phenyl>oxy>-3-ethyl-3-methyl-1-<<(phenylmethyl)amino>carbonyl>azetidin-2-one

Guidance literature:: Multi-step reaction with 4 steps

1: 88 percent / AcOH / 19 h / 25 - 50 °C

2: 45 percent / aq. NaOH / acetone / 64 h / Ambient temperature

3: 35 percent / 1,1-dimethylethyl 4-hydroxybenzoate, 2N aq. NaOH / acetone / 24 h / Ambient temperature

4: 2.1 g / Et₃N, DMAP / CH₂Cl₂ / 16 h / Ambient temperature

With dmap; sodium hydroxide; tert-butyl 4-hydroxybenzoate; acetic acid; triethylamine; In dichloromethane; acetone;
DOI:10.1021/jm00013a021