Conformational control of flexible molecular tweezers by intramolecular CH/π interaction

The synthesis of new flexible molecular tweezers based on 3,4,8,10,11,13-hexahydro-1H,6H-2,5,9,12-tetraoxa-benzo[1,2:4,5]dicyclooctene bearing two naphthalenes is presented. Intramolecular CH/π interaction between the alkyl ring and the two terminal naphthalenes controls the conformation to give a self-quenched cleft form.

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