Home > All categories> Biochemicals and Pharmaceutical Chemicals> Pharmaceutical Impurities> (5R,6S)-6-[(1R)-1-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-[(2R)-tetrahydro-2-furanyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 2-propenyl ester

(5R,6S)-6-[(1R)-1-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-[(2R)-tetrahydro-2-furanyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 2-propenyl ester

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Origin: China

Cas No: 120705-67-1

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 80 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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CAS No.: 120705-67-1 Formula: C21H33NO5SSi Molecular Weight: 439.64100

Basic Info

Chemical Name	(5R,6S)-6-[(1R)-1-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-[(2R)-tetrahydro-2-furanyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 2-propenyl ester
Synonyms
CAS No.	120705-67-1
Molecular Formula	C21H33NO5SSi
Molecular Weight	439.64100
PSA	90.37000
LogP	3.98570

Properties

Density	1.16g/cm3
Boiling Point	536.3ºC at 760mmHg
Flash Point	278.1ºC
Refractive Index	1.542
Vapor Pressure	1.42E-11mmHg at 25°C

Synthesis Route

(3S,4R)-1-(allyloxy)oxoacetyl-3-((R)-1-hydroxyethyl)-4-((R)-2-tetrahydrofuranyl)carbonylthio-azetidin-2-one→(5R,6S)-6-[(1R)-1-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-[(2R)-tetrahydro-2-furanyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 2-propenyl ester
prop-2-enyl 2-chloro-2-oxoacetate→(5R,6S)-6-[(1R)-1-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-[(2R)-tetrahydro-2-furanyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 2-propenyl ester
(3R,4R)-4-acetoxy-3-[(1R)-1-(tert-butyldimethylsilyloxy)ethyl]-2-oxoazetidine→(5R,6S)-6-[(1R)-1-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-[(2R)-tetrahydro-2-furanyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 2-propenyl ester

Precursor

(3R,4R)-4-acetoxy-3-[(1R)-1-(tert-butyldimethylsilyloxy)ethyl]-2-oxoazetidine
(3S,4R)-1-(allyloxy)oxoacetyl-3-((R)-1-hydroxyethyl)-4-((R)-2-tetrahydrofuranyl)carbonylthio-azetidin-2-one
S-((2R,3S)-3-((R)-1-((tert-butyldimethylsilyl)oxy)ethyl)-4-oxoazetidin-2-yl) tetrahydrofuran-2-carbothioate
prop-2-enyl 2-chloro-2-oxoacetate

Downstream Product

Faropenem sodium hydrate

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