91439-21-3

Basic information

• Product Name: cephalosporin 3'-triphenylphosphonium ylide
• Synonyms: cephalosporin 3'-triphenylphosphonium ylide
• CAS NO: 91439-21-3
• Molecular Weight: 758.877
• Mol File: 91439-21-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: cephalosporin 3'-triphenylphosphonium ylide(CAS DataBase Reference)
• NIST Chemistry Reference: cephalosporin 3'-triphenylphosphonium ylide(91439-21-3)
• EPA Substance Registry System: cephalosporin 3'-triphenylphosphonium ylide(91439-21-3)

Safety Data

• Hazardous Substances Data: 91439-21-3(Hazardous Substances Data)

Upstream product

• 107550-89-0 4-(diphenylmethoxycarbonyl)-7β-phenylacetamidoceph-3-en-3-ylmethylphosphonium iodide 

Downstream Products

• 96738-13-5 cephalosporin 3'-triphenylphosphonium ylide sulphoxide 
• 135299-76-2 Diphenylmethyl (6R,7R)-3-<4(RS)-3,3-Bis(ethoxycarbonyl)-1-pyrazolin-4-yl>-7-phenylacetamidoceph-3-em-4-carboxylate 
• 135299-78-4 Diphenylmethyl (6R,7R)-3-<(1RS)-2,2-Bis(ethoxycarbonyl)cyclopropyl>-7-phenylacetamidoceph-3-em-4-carboxylate 
• 135681-35-5 (2R,2aR,3S,7aS)-6-Methyl-1,3-dioxo-2-phenylacetylamino-2,2a,3,7-tetrahydro-1H-3λ⁴-thia-7b-aza-cyclobuta[e]indene-7a-carboxylic acid benzhydryl ester 
• 135587-48-3 (2R,2aR,3R,7aS)-6-Methyl-1,3-dioxo-2-phenylacetylamino-2,2a,3,7-tetrahydro-1H-3λ⁴-thia-7b-aza-cyclobuta[e]indene-7a-carboxylic acid benzhydryl ester 
• 135587-52-9 (2R,2aR,7aS)-2-{2-(2-Amino-thiazol-4-yl)-2-[(Z)-methoxyimino]-acetylamino}-1-oxo-6-phenyl-2,2a-dihydro-1H,7H-3-thia-7b-aza-cyclobuta[e]indene-7a-carboxylic acid 
• 135299-75-1 Diphenylmethyl (6R,7R)-3-<2,2-Bis(ethoxycarbonyl)vinyl>-7-phenylacetamidoceph-3-em-4-carboxylate 
• 96828-69-2 (1R,6aR,7aR)-6-Hydroxy-5-methyl-2-oxo-1-phenylacetylamino-1,6,6a,7a-tetrahydro-2H-7-thia-2a-aza-cyclobuta[f]indene-3-carboxylic acid benzhydryl ester 
• 96828-65-8 (6R,7R)-8-Oxo-3-((E)-3-oxo-but-1-enyl)-7-phenylacetylamino-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester 
• 96828-68-1 (6R,7R)-2-(1-Hydroxy-2-oxo-propyl)-8-oxo-3-((Z)-3-oxo-but-1-enyl)-7-phenylacetylamino-5-thia-1-aza-bicyclo[4.2.0]oct-3-ene-2-carboxylic acid benzhydryl ester 
• 135587-46-1 (2R,2aR,7aS)-6-Methyl-1-oxo-2-phenylacetylamino-2,2a-dihydro-1H,7H-3-thia-7b-aza-cyclobuta[e]indene-7a-carboxylic acid benzhydryl ester 
• 96738-12-4 (2R,2aR)-1-Oxo-2-phenylacetylamino-2,2a,7,8-tetrahydro-1H-3-thia-8b-aza-cyclobuta[a]naphthalene-8a-carboxylic acid benzhydryl ester 
• 135587-47-2 (2R,2aR,7aS)-1-Oxo-6-phenyl-2-phenylacetylamino-2,2a-dihydro-1H,7H-3-thia-7b-aza-cyclobuta[e]indene-7a-carboxylic acid benzhydryl ester 
• 96828-62-5 (6R,7R)-8-Oxo-7-phenylacetylamino-3-((E)-3,3,3-trifluoro-propenyl)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester 

Relevant articles and documents

The Regioselectivity of Cycloaddition Reactions Between Diazomethane and 3-Vinylcephalosporins

Diphenylmethyl (6R,7R)-7-phenylacetamido-3-vinylceph-3-em-4-carboxylate 1 undergoes regioselective addition of diazomethane to give the 1-pyrazoline 7, which readily undergoes thermolysis of give the cyclopropyl analogue 10.The regioselectivity is reversed, however, when one or more electron withdrawing ester substituents are attached to the 3-vinyl group.