6273-79-6

Basic information

• Product Name: Pulvinicanhydride
• Synonyms: 3,6-Diphenylfuro[3,2-b]furan-2,5-dione;Pulvic acid lactone;Pulvic dilactone;Pulvic di-γ-lactone;Pulvinic acid lactone
• CAS NO: 6273-79-6
• Molecular Formula: C₁₈H₁₀O₄
• Molecular Weight: 598.561
• Product Categories: Lichen Products
• Mol File: 6273-79-6.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 544.3°C at 760 mmHg
• Flash Point: 290.8°C
• Appearance: /
• Density: 1.42g/cm³
• Vapor Pressure: 6.63E-12mmHg at 25°C
• Refractive Index: 1.69
• CAS DataBase Reference: Pulvinicanhydride(CAS DataBase Reference)
• NIST Chemistry Reference: Pulvinicanhydride(6273-79-6)
• EPA Substance Registry System: Pulvinicanhydride(6273-79-6)

Safety Data

• Hazardous Substances Data: 6273-79-6(Hazardous Substances Data)

Usage

InChI:InChI=1/C18H10O4/c19-17-13(11-7-3-1-4-8-11)15-16(22-17)14(18(20)21-15)12-9-5-2-6-10-12/h1-10H

Upstream product

• 108-24-7 acetic anhydride 
• 75-36-5 acetyl chloride 
• 57740-69-9 6-Benzyliden-3-hydroxy-4-phenyl-2H-pyran-2,5(6H)-dion 
• 131146-48-0 3-methoxy-4-phenyl-6-(phenylmethylene)-2H-pyran-2,5(6H)-dione 
• 131146-48-0 6-benzylidene-3-methoxy-4-phenylpyran-2,5-dione 
• 137532-11-7 3-oxo-1,4-diphenylbutan-2-yl ethyl oxalate 
• 131146-47-9 6-bromo-3-methoxy-4-phenyl-6-(phenylmethyl)-2H-pyran-2,5(6H)-dione 
• 131146-44-6 3-methoxy-4-phenyl-6-(phenylmethyl)-2H-pyran-2,5(6H)-dione 
• 131146-41-3 3-hydroxy-4-phenyl-6-(phenylmethyl)-2H-pyran-2,5(6H)-dione 
• 93554-96-2 α-<(trimethylsilyl)oxy>benzenepropanenitrile 
• 122-78-1 phenylacetaldehyde 
• 6838-54-6 3-hydroxy-1,4-diphenyl-2-butanone 
• 57740-69-9 6-benzylidene-3-hydroxy-4-phenyl-pyran-2,5-dione 
• 79-37-8 oxalyl dichloride 

Downstream Products

• 106898-67-3 2-(3-Hydroxy-5-oxo-4-phenyl-2,5-dihydro-furan-2-yl)-8-methyl-2-phenyl-4H-1,5-dioxa-4-aza-phenanthrene-3,6-dione 
• 10091-92-6 calycine 
• 521-52-8 vulpic acid 
• 38558-86-0 5-benzylidene-3-phenyl-5H-furan-2-one 
• 1131-15-3 2-phenylsuccinic anhydride 
• 108-88-3 toluene 
• 857482-18-9 4-hydroxy-2,5-diphenyl-valeric acid 
• 854854-27-6 4-oxo-2,5-diphenylpentanoic acid 
• 20177-12-2 2-benzyl-2-hydroxy-3-phenyl-propionic acid 
• 858197-94-1 (5-oxo-4-phenyl-5H-[2]furylidene)-phenyl-acetic acid 
• 879553-85-2 5-benzyl-3-phenyl-dihydro-furan-2-one 
• 37985-17-4 1,4-diphenyl-2-butanone 
• 635-51-8 2-phenylsuccinic acid 
• 22628-22-4 (E)-4-methoxy-5-(α-methoxycarbonylbenzylidene)-3-phenylfuran-2(5H)-one 

Relevant articles and documents

Synthesis of Grevillins, Novel Pyrandione Pigments of Fungi. Biogenetic Interrelationships between Grevillins, Pulvinic Acids, Terphenylquinones and Xylerythrins

A synthesis of the grevillin group of pyrandione pigments, e.g. 3, 23 and 24 present in fungi is described.The synthesis, which is based on a biogenetic model, uses bis-benzylacyloins 9 and their corresponding oxalate derivatives as key intermediates (Scheme 3).Treatment of the grevillins 25a-c with sodium ethoxide in ethanol effects their quantitative isomerisation into the corresponding terphenylquinone pigments 4a-c.Perkin-type condensations between the terphenylquinones 4 and arylacetic acids in the presence of sodium acetate-acetic anhydride then produces the xylerythrin pigments 29a-e, whereas rearrangements of 4 in the presence of dimethyl sulphoxide leads to pulvinic acid derivative, e.g. 31, 32 and 5.These synthetic studies interrelate the biosynthetic origins of the pigment types 3, 4, 5 and 8 together with the related pulvinones 6 and furanone 7 fungal pigments.