Haloaldehyde polymers XLVIII., Optical activity of diastereomeric bornyloxy terminated aldehyde unimers
✍ Scribed by Koichi Hatada; Koichi Ute; Tohru Nishimura; Fu Xi; Otto Vogl
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 2010
- Weight
- 418 KB
- Volume
- 99
- Category
- Article
- ISSN
- 0037-9646
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✦ Synopsis
Abstract
Bornyl oxide initiated, acetate endcapped unimers of trifluoroacetaldehyde, trichloroacetaldehyde and tribromoacetaldehyde were prepared and their optical rotations were determined. The value of the optical rotations of the unimers was correlated to the bulk size of the trihalomethyl group and they were compared to those of the unimer of formaldehyde and bornyl acetate. The bornyloxy terminated trihaloacetaldehydes consist of 2 diastereomeric unimers. In the cases of the chloral and bromal unimers they have been isolated. One diastereomer of the trichloroacetaldehyde unimers was crystallized and its absolute configuration was established by x‐ray spectroscopy.