(3R,3aS,7aR)-3-[(S)-1-(tert-Butyl-dimethyl-silanyloxy)-2-methyl-propyl]-2-(4-methoxy-benzyl)-3a,5,5-trimethyl-1-oxo-octahydro-4-oxa-2-aza-5-sila-indene-3-carboxylic acid methyl ester

Base Information

Chemical Name:(3R,3aS,7aR)-3-[(S)-1-(tert-Butyl-dimethyl-silanyloxy)-2-methyl-propyl]-2-(4-methoxy-benzyl)-3a,5,5-trimethyl-1-oxo-octahydro-4-oxa-2-aza-5-sila-indene-3-carboxylic acid methyl ester
CAS No.:860453-71-0
Molecular Formula:C₂₉H₄₉NO₆Si₂
Molecular Weight:563.882
Hs Code.:

(3R,3aS,7aR)-3-[(S)-1-(tert-Butyl-dimethyl-silanyloxy)-2-methyl-propyl]-2-(4-methoxy-benzyl)-3a,5,5-trimethyl-1-oxo-octahydro-4-oxa-2-aza-5-sila-indene-3-carboxylic acid methyl ester

Synonyms:(3R,3aS,7aR)-3-[(S)-1-(tert-Butyl-dimethyl-silanyloxy)-2-methyl-propyl]-2-(4-methoxy-benzyl)-3a,5,5-trimethyl-1-oxo-octahydro-4-oxa-2-aza-5-sila-indene-3-carboxylic acid methyl ester

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Chemical Property of (3R,3aS,7aR)-3-[(S)-1-(tert-Butyl-dimethyl-silanyloxy)-2-methyl-propyl]-2-(4-methoxy-benzyl)-3a,5,5-trimethyl-1-oxo-octahydro-4-oxa-2-aza-5-sila-indene-3-carboxylic acid methyl ester

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Technology Process of (3R,3aS,7aR)-3-[(S)-1-(tert-Butyl-dimethyl-silanyloxy)-2-methyl-propyl]-2-(4-methoxy-benzyl)-3a,5,5-trimethyl-1-oxo-octahydro-4-oxa-2-aza-5-sila-indene-3-carboxylic acid methyl ester

There total 10 articles about (3R,3aS,7aR)-3-[(S)-1-(tert-Butyl-dimethyl-silanyloxy)-2-methyl-propyl]-2-(4-methoxy-benzyl)-3a,5,5-trimethyl-1-oxo-octahydro-4-oxa-2-aza-5-sila-indene-3-carboxylic 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: 93.0%

: 860453-70-9
(2R,3S)-2-[(S)-1-(tert-Butyl-dimethyl-silanyloxy)-2-methyl-propyl]-3-(iodomethyl-dimethyl-silanyloxy)-1-(4-methoxy-benzyl)-3-methyl-4-methylene-5-oxo-pyrrolidine-2-carboxylic acid methyl ester

: 860453-71-0
(3R,3aS,7aR)-3-[(S)-1-(tert-Butyl-dimethyl-silanyloxy)-2-methyl-propyl]-2-(4-methoxy-benzyl)-3a,5,5-trimethyl-1-oxo-octahydro-4-oxa-2-aza-5-sila-indene-3-carboxylic acid methyl ester

Guidance literature:: With triethyl borane; tri-n-butyl-tin hydride; diethylaluminium chloride; air; In hexane; toluene; at -78 ℃; for 3h;
DOI:10.1021/ja052376o

Reference yield:

: 860453-75-4
(4R,5R)-4-((S)-1-Hydroxy-2-methyl-propyl)-2-(4-methoxy-phenyl)-5-methyl-4,5-dihydro-oxazole-4-carboxylic acid methyl ester

: 860453-71-0
(3R,3aS,7aR)-3-[(S)-1-(tert-Butyl-dimethyl-silanyloxy)-2-methyl-propyl]-2-(4-methoxy-benzyl)-3a,5,5-trimethyl-1-oxo-octahydro-4-oxa-2-aza-5-sila-indene-3-carboxylic acid methyl ester

Guidance literature:: Multi-step reaction with 8 steps

1.1: 95 percent / 2,6-lutidine / CH₂Cl₂ / 6 h / 0 °C

2.1: NaCNBH₃; Et₃N; AcOH / 24 h / 40 °C

3.1: 5.0 g / oxalyl chloride; DMSO; Et₃N / CH₂Cl₂ / 1.25 h / -78 °C

4.1: 79 percent / triisobutylamine / acetonitrile / 72 h / 23 °C

5.1: Ti(OiPr)4; c-C₅H₉MgCl / diethyl ether; various solvent(s) / 0.5 h / -40 °C

5.2: I₂ / tetrahydrofuran; diethyl ether; various solvent(s) / 4 h / -40 - 23 °C

5.3: 85 percent / Et₃N / CH₂Cl₂ / 0.5 h

6.1: imidazole / dimethylformamide / 1 h / 0 °C

7.1: 3.0 g / NaI / acetone / 6 h / 60 °C

8.1: 93 percent / Et₂AlCl; Bu₃SnH; Et₃B / air / toluene; hexane / 3 h / -78 °C

With 1H-imidazole; 2,6-dimethylpyridine; titanium(IV) isopropylate; oxalyl dichloride; triisobutylamine; triethyl borane; tri-n-butyl-tin hydride; diethylaluminium chloride; cyclopentylmagnesium chloride; sodium cyanoborohydride; acetic acid; dimethyl sulfoxide; triethylamine; sodium iodide; air; In diethyl ether; hexane; dichloromethane; N,N-dimethyl-formamide; acetone; toluene; acetonitrile; 3.1: Swern oxidation;
DOI:10.1021/ja052376o

Reference yield:

: 860453-67-4
(4S,5R)-4-[(S)-1-(tert-Butyl-dimethyl-silanyloxy)-2-methyl-propyl]-2-(4-methoxy-phenyl)-5-methyl-4,5-dihydro-oxazole-4-carboxylic acid methyl ester

: 860453-71-0
(3R,3aS,7aR)-3-[(S)-1-(tert-Butyl-dimethyl-silanyloxy)-2-methyl-propyl]-2-(4-methoxy-benzyl)-3a,5,5-trimethyl-1-oxo-octahydro-4-oxa-2-aza-5-sila-indene-3-carboxylic acid methyl ester

Guidance literature:: Multi-step reaction with 7 steps

1.1: NaCNBH₃; Et₃N; AcOH / 24 h / 40 °C

2.1: 5.0 g / oxalyl chloride; DMSO; Et₃N / CH₂Cl₂ / 1.25 h / -78 °C

3.1: 79 percent / triisobutylamine / acetonitrile / 72 h / 23 °C

4.1: Ti(OiPr)4; c-C₅H₉MgCl / diethyl ether; various solvent(s) / 0.5 h / -40 °C

4.2: I₂ / tetrahydrofuran; diethyl ether; various solvent(s) / 4 h / -40 - 23 °C

4.3: 85 percent / Et₃N / CH₂Cl₂ / 0.5 h

5.1: imidazole / dimethylformamide / 1 h / 0 °C

6.1: 3.0 g / NaI / acetone / 6 h / 60 °C

7.1: 93 percent / Et₂AlCl; Bu₃SnH; Et₃B / air / toluene; hexane / 3 h / -78 °C

With 1H-imidazole; titanium(IV) isopropylate; oxalyl dichloride; triisobutylamine; triethyl borane; tri-n-butyl-tin hydride; diethylaluminium chloride; cyclopentylmagnesium chloride; sodium cyanoborohydride; acetic acid; dimethyl sulfoxide; triethylamine; sodium iodide; air; In diethyl ether; hexane; dichloromethane; N,N-dimethyl-formamide; acetone; toluene; acetonitrile; 2.1: Swern oxidation;
DOI:10.1021/ja052376o