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The acetyl derivative of a novel Fries rearrangement product
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UNSPECIFIED (1996) The acetyl derivative of a novel Fries rearrangement product. ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 52 (Part 11). pp. 2775-2777. ISSN 0108-2701.
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Abstract
The structure of the acetyl derivative of a novel Fries rearrangement product, 8,3'-methylene[7-acetoxy-4-methyl- 2H-1-benzopyran-2-one][4''-methyl-2''H- 1''-pyran-2''-one(5',6':6'',5'')-2'H-1'-benzopyran-2'-one] {IUPAC name 4-methyl-7-[(4-methyl-2,8-dioxo-2H, 8H-pyrano[2,3-h]chromen-9-yl)methyl]-2-oxo-2H-chromen-6-yl acetate, C26H18O8}, has been determined. The result confirms the somewhat surprising formation of a bis-coumarin derivative from a coumaryl ester. The planes of the two coumarin units are inclined at an angle of 74.7(1)degrees with respect to one another and the exocyclic angles about the coumarin points of attachment to the methylene C atom show an interesting asymmetry.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Journal or Publication Title: | ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | ||||
Publisher: | MUNKSGAARD INT PUBL LTD | ||||
ISSN: | 0108-2701 | ||||
Official Date: | 15 November 1996 | ||||
Dates: |
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Volume: | 52 | ||||
Number: | Part 11 | ||||
Number of Pages: | 3 | ||||
Page Range: | pp. 2775-2777 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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