tert-butyl (3R)-3-(3,5-difluorophenyl)-4-(2-ethoxy-2-oxoethyl)-3-methyl-5-oxo-1,4-diazaspiro[5.5]undecane-1-carboxylate

Base Information

Chemical Name:tert-butyl (3R)-3-(3,5-difluorophenyl)-4-(2-ethoxy-2-oxoethyl)-3-methyl-5-oxo-1,4-diazaspiro[5.5]undecane-1-carboxylate
CAS No.:957122-20-2
Molecular Formula:C₂₅H₃₄F₂N₂O₅
Molecular Weight:480.552
Hs Code.:

Synonyms:tert-butyl (3R)-3-(3,5-difluorophenyl)-4-(2-ethoxy-2-oxoethyl)-3-methyl-5-oxo-1,4-diazaspiro[5.5]undecane-1-carboxylate

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Chemical Property of tert-butyl (3R)-3-(3,5-difluorophenyl)-4-(2-ethoxy-2-oxoethyl)-3-methyl-5-oxo-1,4-diazaspiro[5.5]undecane-1-carboxylate

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Technology Process of tert-butyl (3R)-3-(3,5-difluorophenyl)-4-(2-ethoxy-2-oxoethyl)-3-methyl-5-oxo-1,4-diazaspiro[5.5]undecane-1-carboxylate

There total 10 articles about tert-butyl (3R)-3-(3,5-difluorophenyl)-4-(2-ethoxy-2-oxoethyl)-3-methyl-5-oxo-1,4-diazaspiro[5.5]undecane-1-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:

: 105-36-2
ethyl bromoacetate

: 957122-20-2
tert-butyl (3R)-3-(3,5-difluorophenyl)-4-(2-ethoxy-2-oxoethyl)-3-methyl-5-oxo-1,4-diazaspiro[5.5]undecane-1-carboxylate

Guidance literature:: tert-butyl (3R)-3-(3,5-difluorophenyl)-3-methyl-5-oxo-1,4-diazaspiro[5.5]undecane-1-carboxylate; With sodium hydride; In tetrahydrofuran; at 0 ℃; for 0.0833333h;

ethyl bromoacetate; In tetrahydrofuran; at 20 ℃; for 1h;

Reference yield:

: 957122-19-9
tert-butyl (3R)-3-(3,5-difluorophenyl)-3-methyl-5-oxo-1,4-diazaspiro[5.5]undecane-1-carboxylate

: 105-36-2
ethyl bromoacetate

: 957122-20-2
tert-butyl (3R)-3-(3,5-difluorophenyl)-4-(2-ethoxy-2-oxoethyl)-3-methyl-5-oxo-1,4-diazaspiro[5.5]undecane-1-carboxylate

Guidance literature:: tert-butyl (3R)-3-(3,5-difluorophenyl)-3-methyl-5-oxo-1,4-diazaspiro[5.5]undecane-1-carboxylate; With sodium hydride; In tetrahydrofuran; oil; at 0 ℃; for 0.0833333h;

ethyl bromoacetate; In tetrahydrofuran; oil; at 20 ℃; for 1h;

Reference yield:

: 123577-99-1
3′,5′-difluoroacetophenone

: 957122-20-2
tert-butyl (3R)-3-(3,5-difluorophenyl)-4-(2-ethoxy-2-oxoethyl)-3-methyl-5-oxo-1,4-diazaspiro[5.5]undecane-1-carboxylate

Guidance literature:: Multi-step reaction with 9 steps

1.1: ammonia / titanium(IV) isopropylate / ethanol / 20 h / 20 °C

1.2: 2 h / Cooling

2.1: dichloromethane / 0 - 20 °C

2.2: 60 - 70 °C

3.1: potassium tert-butylate / tetrahydrofuran / -78 - 20 °C

3.2: -78 - 0 °C

4.1: lithium aluminium tetrahydride / tetrahydrofuran / 3 h / -78 °C

5.1: acetic acid / methanol / 0.5 h / 20 °C

5.2: 1 h / 20 °C / pH 5

6.1: hydrogenchloride / ethyl acetate / 0.5 h / 0 °C

7.1: acetic acid / xylenes / 3 h / 80 °C

8.1: N-ethyl-N,N-diisopropylamine / acetonitrile / 8 h / 60 °C

9.1: sodium hydride / tetrahydrofuran; oil / 0.08 h / 0 °C

9.2: 1 h / 20 °C

With hydrogenchloride; lithium aluminium tetrahydride; potassium tert-butylate; ammonia; sodium hydride; acetic acid; N-ethyl-N,N-diisopropylamine; titanium(IV) isopropylate; In tetrahydrofuran; methanol; ethanol; dichloromethane; ethyl acetate; acetonitrile; oil; xylenes;