SYNTHESIS OF INTRA ANNULARLY LINKED BENZOTRIAZOLOPHANE

Reduction of 1,3-dialkyl benzotriazolium salts was carried out using NaH/THF. The methodology was applied for the synthesis of benzotriazolophane 2, which was intra annularly linked by p-xylenyl dibromide to give novel cyclophane 6 and reduction of benzotriazolophane 7 gave cyclophane 8.