The titled strained cyclophane, the smallest member of this family to be known, was synthesized by bromination-dehydrobromination of the corresponding triene in good yield; its X-ray crystallographic analysis reveals an averaged sp bond angle of 158.6 degrees that is substantially bent from the normal, linear triple bond. (C) 1997 Elsevier Science Ltd.
The titled strained cyclophane, the smallest member of this family to be known, was synthesized by bromination-dehydrobromination of the corresponding triene in good yield; its X-ray crystallographic analysis reveals an averaged sp bond angle of 158.6 degrees that is substantially bent from the normal, linear triple bond. (C) 1997 Elsevier Science Ltd.