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Synthesis, crystal structures and photochromic properties of novel chiral Schiff base macrocycles

✍ Scribed by Koichi Tanaka; Ryota Shimoura; Mino R. Caira

Publisher
Elsevier Science
Year
2010
Tongue
French
Weight
618 KB
Volume
51
Category
Article
ISSN
0040-4039

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✦ Synopsis

Enantiomerically pure and racemic forms of calixsalen-type macrocycles 1 and 2 were synthesized and their crystal structures were determined. The enantiomerically pure crystals of (S,S,S,S,S,S)-1 exhibited thermally reversible photochromism from yellow to orange-red upon photoirradiation in the solid state, while rac-crystals of 2 with the guest CH 3 CN did not show any photocolouration.

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