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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 30, Number 11
BKCSDE 30(11)
November 20, 2009 

 
Title
X-ray Crystal Structure of Hetaryl Leuco-TAM Dyes, (2Z,2’E)-2,2’-(2-Phenyl Propane-1,3-diylidene) Bis(1,3,3-trimethyl indoline) Derivatives
Author
Sam Rok Keum*, Se Jung Roh, Young Nan Kim, Do Hyuck Im, So Young Ma
Keywords
Hetaryl leuco-TAM dyes, Hetaryl TAM dyes, Steroselective, Three-bladed propeller conformation, Monoclinic crystal
Abstract
The unequivocal solid-state structure and stereochemistry of the hetaryl leuco-TAM dye, 2,2’-(2-phenyl propane-1,3-diylidene) bis(1,3,3- trimethylindoline) derivatives were established using X-ray single crystal analysis. The X-ray crystal analysis showed that the (Z, E)-isomers only formed stereoselectively, with a so-called “threebladed propeller” conformation, from the reaction of a Fischer base and benzaldehyde derivatives. These isomers were stacked in a juxtaposition to form a dimer or a double dimer, adopting either a triclinic, with P-1, or monoclinic crystal system with a space group P21/n in the unit cell of the crystal.
Page
2608 - 2612
Full Text
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