81779-73-9

Basic information

• Product Name: chloroxoacetic acid (4-nitrophenyl)methyl ester
• Synonyms: chloroxoacetic acid (4-nitrophenyl)methyl ester
• CAS NO: 81779-73-9
• Molecular Weight: 243.603
• Mol File: 81779-73-9.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 183 °C(Press: 11-12 Torr)
• Density: 1.498±0.06 g/cm3(Predicted)
• CAS DataBase Reference: chloroxoacetic acid (4-nitrophenyl)methyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: chloroxoacetic acid (4-nitrophenyl)methyl ester(81779-73-9)
• EPA Substance Registry System: chloroxoacetic acid (4-nitrophenyl)methyl ester(81779-73-9)

Safety Data

• Hazardous Substances Data: 81779-73-9(Hazardous Substances Data)

Upstream product

• 79-37-8 oxalyl dichloride 
• 619-73-8 4-nitrobenzyl chloride 

Downstream Products

• 104742-05-4 2-[(4-nitrobenzyl)sulfanyl]pyridine 
• 92445-72-2 {(2R,3S)-2-Allyl-3-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-oxo-azetidin-1-yl}-oxo-acetic acid 4-nitro-benzyl ester 
• 92411-47-7 [(2R,3S)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-2-(2-fluoro-ethylsulfanylthiocarbonylsulfanyl)-4-oxo-azetidin-1-yl]-oxo-acetic acid 4-nitro-benzyl ester 
• 90628-94-7 {(3S,4R)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-2-oxo-4-phenylsulfanylcarbonylmethyl-azetidin-1-yl}-oxo-acetic acid 4-nitro-benzyl ester 
• 90628-98-1 {(2R,3S)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-2-[2-(4-nitro-benzyloxycarbonylamino)-ethylsulfanylcarbonylmethyl]-4-oxo-azetidin-1-yl}-oxo-acetic acid 4-nitro-benzyl ester 
• 90628-89-0 {(2R,3S)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-2-isopropylsulfanylcarbonylmethyl-4-oxo-azetidin-1-yl}-oxo-acetic acid 4-nitro-benzyl ester 
• 92133-39-6 {(2R,3S)-3-((R)-1-Hydroxy-ethyl)-2-[2-(4-nitro-benzyloxycarbonylamino)-ethylsulfanylcarbonylmethyl]-4-oxo-azetidin-1-yl}-oxo-acetic acid 4-nitro-benzyl ester 
• 92133-40-9 [(2R,3S)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-2-((S)-1-{1-[(E)-4-nitro-benzyloxycarbonylimino]-ethyl}-pyrrolidin-3-ylsulfanylcarbonylmethyl)-4-oxo-azetidin-1-yl]-oxo-acetic acid 4-nitro-benzyl ester 
• 90629-18-8 {(2R,3S)-2-[2-(4-Nitro-benzyloxycarbonylamino)-ethylsulfanylcarbonylmethyl]-3-[(R)-1-(4-nitro-benzyloxycarbonyloxy)-ethyl]-4-oxo-azetidin-1-yl}-oxo-acetic acid 4-nitro-benzyl ester 
• 90629-08-6 (S)-3-{2-[(2R,3S)-3-[(R)-1-(4-Nitro-benzyloxycarbonyloxy)-ethyl]-1-(4-nitro-benzyloxyoxalyl)-4-oxo-azetidin-2-yl]-acetylsulfanyl}-pyrrolidine-1-carboxylic acid 4-nitro-benzyl ester 
• 90629-11-1 {(3S,4R)-3-[(R)-1-(4-Nitro-benzyloxycarbonyloxy)-ethyl]-2-oxo-4-phenylsulfanylcarbonylmethyl-azetidin-1-yl}-oxo-acetic acid 4-nitro-benzyl ester 
• 90629-01-9 (S)-3-{2-[(2R,3S)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-1-(4-nitro-benzyloxyoxalyl)-4-oxo-azetidin-2-yl]-acetylsulfanyl}-pyrrolidine-1-carboxylic acid 4-nitro-benzyl ester 
• 132033-77-3 {(2R,3S)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-2-methoxythiocarbonylsulfanyl-4-oxo-azetidin-1-yl}-oxo-acetic acid 4-nitro-benzyl ester 
• 132033-82-0 {(2R,3S)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-2-methylsulfanylthiocarbonylsulfanyl-4-oxo-azetidin-1-yl}-oxo-acetic acid 4-nitro-benzyl ester 

Relevant articles and documents

Process and ester derivatives useful for preparation of cephalosporins

This invention relates a process for preparing a compound of formula (I) wherein R1 is para-nitrobenzyl or allyl; and X is halo, which is useful to prepare 3-cyclic-ether-substituted cephalosporins, from trimethylphosphinic compounds. This invention also relates to compounds useful in such process.