Thioindigo precursor: Control of polymorph of thioindigo

Tetrahedron Letters

Volumn 45, Issue 49, 2004, Pages 9083-9086

  Uno, Hidemitsu ^a   Moriyama, Kana ^a   Ishikawa, Takayuki ^b   Ono, Noboru ^a   Yahiro, Hidenori ^a  

^a EHIME UNIVERSITY   (Japan)

^b Inkjet Media Design Dept 2

Author keywords

Polymorphism; Retro Diels Alder reaction; Soluble precursor; Thioindigo

Indexed keywords

DYE; UNCLASSIFIED DRUG;

ARTICLE; CHEMICAL ANALYSIS; CHEMICAL MODIFICATION; CHEMICAL STRUCTURE; DIELS ALDER REACTION; QUANTITATIVE ANALYSIS; STRUCTURE ANALYSIS; THIOINDIGO;

BETULACEAE;

EID: 8644249625     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2004.10.028     Document Type: Article

References (16)

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8. 2, log ε) 483 (2.77) nm
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13. H. von Eller Bull. Chim. Soc. Fr. 106 1955 1438
14. 1/n, Z = 2, a = 3.981(3), b = 20.65(2), c = 7.930(7) Å, β = 98.84(5)°
15. Powder simulation and single cystal analysis were performed by CrystalStructure Ver. 3.6.0 (Rigaku, 3-9-12 Akishima, Tokyo, Japan)
16. wR (all) = 0.1629, goodness-of-fit = 1.017 for 110 parameters. The molecule occupies a special position. The crystal is a mixture of two stereoisomers in 1:1 ratio, and the double and single bonds in the bicyclo[2.2.2]-octadiene skeleton could not be distinguished. In the refined structure, hydrogen atoms are formally placed as if the double bonds occupy the trans position. The crystallographic data are deposited at Cambridge Crystallographic Data Centre (CCDC 233280)