Journal ArticleDOI
Thermal Claisen rearrangement of aryl allenylmethyl ethers: synthesis of 2-(o-hydroxyaryl)buta-1,3-dienes and 4-methyl-2H-1-benzopyrans
TLDR
In this paper, aryl allenylmethyl ethers in diethylene glycol were rearranged to yield 2-(o-hydroxyaryl)buta-1,3-dienes and 4-methyl-2H-1-benzopyrans.Abstract:
Thermal Claisen rearrangement of aryl allenylmethyl ethers in diethylene glycol afforded 2-(o-hydroxyaryl)buta-1,3-dienes and 4-methyl-2H-1-benzopyrans in good yield.read more
Citations
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Journal ArticleDOI
Electron-impact-induced 3,3-sigmatropic rearrangement and cyclization in phenyl allenylmethyl ethers
TL;DR: Linked scans, high-resolution mass spectrometry, collision-activated dissociation-B/E linked-scan spectra, and D-labeling have been employed to support the proposed mechanisms and ion structures.
Journal ArticleDOI
Synthesis and evaluation of the cytotoxicities of neoflavenes
Sie Rong Li,Hsing Ming Chen,Po-Yuan Chen,Jui Chi Tsai,Liang Yeu Chen,Eng-Chi Wang,Yi Ting Huang,Yun Chen Wei,Pei-Jung Lu +8 more
TL;DR: In this paper, the synthesis of neoflavenes with methoxy substituents at different positions is described. And the structure and activity relationship of the synthesized neoflaves are further discussed briefly.
Journal ArticleDOI
Thermal Claisen Rearrangement of Aryl Allenylmethyl Ethers: Synthesis of 2-(o-Hydroxyaryl)buta-1,3-dienes and 4-Methyl-2H-1-benzopyrans.
TL;DR: In this article, aryl allenylmethyl ethers in diethylene glycol were rearranged to yield 2-(o-hydroxyaryl)buta-1,3-dienes and 4-methyl-2H-1-benzopyrans.
References
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Journal ArticleDOI
Organoaluminum-promoted Claisen rearrangement of allyl vinyl ethers
TL;DR: Le (bis-[(bromo-4 di-t-butyl-2,6)phenoxy methyl) aluminium peut etre utilise pour obtenir l'isomere (Z) alors que l'sisomeres (E) est produit avec le (bis-(diphenyl 2,6 phenoxy] methyl) aluminum as discussed by the authors.
Journal ArticleDOI
Water as a solvent for the Claisen rearrangement: practical implications for synthetic organic chemistry
TL;DR: The influence accelerante de l'eau comme solvant, sur la vitesse de la transposition de Claisen a ete demontree pour divers substrats as discussed by the authors.
Journal ArticleDOI
Studies an Acetylenic Compounds. XXIII. A New Ring Closure of 2-Propynyl Ethers
Issei Iwai,Junya Ide +1 more
TL;DR: The structures of new pyran derivatives obtained by the new ring-closure were confirmed by the melting point, infrared and ultraviolet spectra of the authentic samples which were synthesized by another routes.
Journal ArticleDOI
Generation of allenyliodinanes and their reductive iodonio-Claisen rearrangement
TL;DR: This is the first to show that meta-Claisen rearrangement occurs preferentially even when a free para position is available, and can be interpreted in terms of the small bond energy of the breaking apical carbon-iodine (III) bond.
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