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Volumn 2, Issue 12, 2011, Pages 2314-2320

Saddlequat: A [6]helquat captured on its racemization pathway

Author keywords

[No Author keywords available]

Indexed keywords

CHIRAL SPECIES; DYNAMIC ASPECTS; DYNAMIC PROPERTY; ELECTRONIC SUPPLEMENTARY INFORMATIONS; ENANTIOMERIZATION; ENANTIOPURE; HELICENES; RACEMIZATION PATHWAY; RUBBER GLOVES;

EID: 84855938538     PISSN: 20416520     EISSN: 20416539     Source Type: Journal    
DOI: 10.1039/c1sc00468a     Document Type: Article
Times cited : (35)

References (149)
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    • For an excellent overview, see: C. Wolf, Dynamic Stereochemistry of Chiral Compounds, RSC Publishing, Cambridge, UK, 2008, pp. 53-54
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    • For a predicted [11]anthrahelicene saddle-shaped intermediate, see
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    • [rac- 2] [PF6]2 (CCDC), [rac- 5] [TfO]2 (CCDC 829267), [Sa,Ra- 4] [(R, R)-dibenzoyl tartrate] 2 (CCDC 828959), and [P- 5] [ClO4]2 (CCDC 829265) Intramolecular [2 + 2 + 2] cycloaddition as an entry to non-ionic helical scaffolds was pioneered in the group of Stará and Starý, for initial reports, see
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    • ref. 7b, 17 Ratio of [4] : [5] (4 : 1) determined by integration of peaks in NMR spectra after the cyclization experiment conducted at 105 °C/30 min. See ESI For enantiocomposition analysis of helquats by CE, see ref. 20 and
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    • The energy difference between species 4 and 5 is similar for the calculations performed with ditriflates in the gas phase For a recent successful resolution of non-ionic 1-aza[6]helicene via its dibenzoyltartrate diastereoisomeric salts, see
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    • During preparation of this manuscript an interesting saddle-shaped system was isolated and introduced by Bertozzi et al. However, it has not been studied in the context of its transformation to the corresponding helix. Interestingly, synthesis of this saddle-shaped system relies on non-catalyzed intermolecular [2 + 2 + 2] cycloaddition, see
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.