(2S,3S)-2-{(S)-2-[(R)-1-(2,2-Dimethyl-propionylamino)-ethyl]-benzenesulfinyl}-3-hydroxy-4,4-dimethyl-pentanoic acid tert-butyl ester

Base Information

Chemical Name:(2S,3S)-2-{(S)-2-[(R)-1-(2,2-Dimethyl-propionylamino)-ethyl]-benzenesulfinyl}-3-hydroxy-4,4-dimethyl-pentanoic acid tert-butyl ester
CAS No.:144434-08-2
Molecular Formula:C₂₄H₃₉NO₅S
Molecular Weight:453.643
Hs Code.:

Synonyms:(2S,3S)-2-{(S)-2-[(R)-1-(2,2-Dimethyl-propionylamino)-ethyl]-benzenesulfinyl}-3-hydroxy-4,4-dimethyl-pentanoic acid tert-butyl ester

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Chemical Property of (2S,3S)-2-{(S)-2-[(R)-1-(2,2-Dimethyl-propionylamino)-ethyl]-benzenesulfinyl}-3-hydroxy-4,4-dimethyl-pentanoic acid tert-butyl ester

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Technology Process of (2S,3S)-2-{(S)-2-[(R)-1-(2,2-Dimethyl-propionylamino)-ethyl]-benzenesulfinyl}-3-hydroxy-4,4-dimethyl-pentanoic acid tert-butyl ester

There total 7 articles about (2S,3S)-2-{(S)-2-[(R)-1-(2,2-Dimethyl-propionylamino)-ethyl]-benzenesulfinyl}-3-hydroxy-4,4-dimethyl-pentanoic acid tert-butyl 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: 90.0%

: 139223-54-4
(S_(S)R)-tert-butyl o-<1-(tert-butylcarbonylamino)ethyl>phenylsulfinylacetate

: 630-19-3
pivalaldehyde

: 144434-08-2
(2S,3S)-2-{(S)-2-[(R)-1-(2,2-Dimethyl-propionylamino)-ethyl]-benzenesulfinyl}-3-hydroxy-4,4-dimethyl-pentanoic acid tert-butyl ester

Guidance literature:: With tert-butylmagnesium bromide; In tetrahydrofuran; 1) 6 h, -78 deg C, 2) 6 h, r.t.;
DOI:10.1016/S0040-4039(00)79112-X

Reference yield:

: 144434-12-8
(R)-(+)-o-(1-pivaloylaminoethyl)thiophenol

: 144434-08-2
(2S,3S)-2-{(S)-2-[(R)-1-(2,2-Dimethyl-propionylamino)-ethyl]-benzenesulfinyl}-3-hydroxy-4,4-dimethyl-pentanoic acid tert-butyl ester

Guidance literature:: Multi-step reaction with 4 steps

1: 1.) sodium periodate, 2.) sodium hydroxide / 1.) iodine / 1.) MeOH, H₂O, reflux, 16 h, 2.) THF, H₂O, 1.0 h

2: 67 percent / SOCl₂, DMAP / tetrahydrofuran / 18 h / Ambient temperature

3: 1.) EtMgBr, diisopropylamine / 1.) Et₂O, reflux, 1 h, 2.) THF, Et₂O, -40 deg C, 4 h

4: 1.) tert-BuMgBr / 1.) Et₂O, THF, -78 deg C, 1.5 h, 2.) THF, a) -78 deg C, 4 h, b) -78 deg C -> ambient temperature, ca. 16 h

With dmap; sodium hydroxide; sodium periodate; thionyl chloride; tert-butylmagnesium bromide; ethylmagnesium bromide; diisopropylamine; iodine; In tetrahydrofuran;

Reference yield:

: 3886-69-9
(R)-1-phenyl-ethyl-amine

: 144434-08-2
(2S,3S)-2-{(S)-2-[(R)-1-(2,2-Dimethyl-propionylamino)-ethyl]-benzenesulfinyl}-3-hydroxy-4,4-dimethyl-pentanoic acid tert-butyl ester

Guidance literature:: Multi-step reaction with 5 steps

1: 80 percent / Et₃N / CH₂Cl₂ / 16 h / Ambient temperature

2: 1.) tert-BuLi, 2.) SO₂ / 1.) Et₂O, a) -78 deg C, 1 h, b) 0 deg C, 0.5 h, 2.) -78 deg C -> ambient temperature

3: 67 percent / SOCl₂, DMAP / tetrahydrofuran / 18 h / Ambient temperature

4: 1.) EtMgBr, diisopropylamine / 1.) Et₂O, reflux, 1 h, 2.) THF, Et₂O, -40 deg C, 4 h

5: 1.) tert-BuMgBr / 1.) Et₂O, THF, -78 deg C, 1.5 h, 2.) THF, a) -78 deg C, 4 h, b) -78 deg C -> ambient temperature, ca. 16 h

With dmap; thionyl chloride; tert-butylmagnesium bromide; sulfur dioxide; ethylmagnesium bromide; tert.-butyl lithium; triethylamine; diisopropylamine; In tetrahydrofuran; dichloromethane;