Exclusive Formation of Crystalline sp-9-(o-Isopropylphenyl) fluorene from its ap Rotamer in Solution

…, Y Hou, D Scott, PD Robinson

文献索引：Meyers, Cal Y.; Hou, Yuqing; Scott, Delano; Robinson, Paul D. Acta Crystallographica Section C: Crystal Structure Communications, 1997 , vol. 53, # 8 p. 1149 - 1151

全文：HTML全文

被引用次数: 7

摘要

Reduction of ap-9-(o-isopropylphenyl)-9-fluorenol provided 9-(o-isopropylphenyl) fluorene shown to be the sp and ap rotamers in solution by 1H NMR. Evaporation of the solvent yielded sharp-melting crystals identified by X-ray diffraction as sp-9-(o-isopropylphenyl) fluorene (C22H20) exclusively. A solution of these crystals redissolved in the same solvent again contained the sp and ap rotamers in the same ratio as before. The X-ray structure ...