Synthesis and chiroptical properties of axially chiral, binaphthol-based oligomers
β Scribed by Man-Kit Ng; Hak-Fun Chow; Tze-Lock Chan; Thomas C.W. Mak
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- French
- Weight
- 239 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
By use of an asymmetric Ullmann coupling involving chiral naphthalene oxazolines 1, the title compounds were prepared in good yields and with high diastereoselectivity. Hydrolysis of the binaphthyl oxazolines 2 led to the di-aldehydes 5, which were transformed into the azepine derivative, 6. The lat
## Abstract Inherently chiral resorcin[4]arenes **2** and **3** were prepared from enantiomerically pure __C__~4~βsymmetric __rccc__β2,8,14,20βtetraisobutylβ4,10,16,22βtetraβ__O__βmethylresorcin[4]arene (**1**). The four 2βbromobenzyl ether residues in precursor **2** were introduced as halide moie