Molecular crystals with moving parts: synthesis, characterization, and crystal packing of molecular gyroscopes with methyl-substituted triptycyl frames

…, CJ Mortko, H Dang, MA Garcia-Garibay

Index: Godinez, Carlos E.; Zepeda, Gerardo; Mortko, Christopher J.; Dang, Hung; Garcia-Garibay, Miguel A. Journal of Organic Chemistry, 2004 , vol. 69, # 5 p. 1652 - 1662

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Citation Number: 84

Abstract

We report a highly convergent synthesis for the preparation of molecular gyroscopes consisting of para-phenylene rotors linked by triple bonds to methyl-substituted triptycenes acting as pivots and encapsulating frames. The desired 1, 4-bis [2-(2, 3, 6, 7, 12, 13- hexamethyl-10-alkyl-9-triptycyl) ethynyl] benzenes were prepared from 2, 3-dimethyl-1, 3- butadiene using Diels-Alder cycloadditions and Pd (0)-catalyzed coupling as the key ...