Chlorophenyl -3-hydroxy

Photoirradiation of both neat and benzene solutions of 2-cyclohexenone (66b) gives a complex mixture of photodimers [40]. However, photoirradiation of a 1 1 complex of 66b with the chiral host (S,S)-(-)-l,4-bis[3-(o-chlorophenyl)-3-hydroxy-3-phenylprop-l-ynyl]benzene (167) in the solid state (Scheme 24) gave (-)-anf/-head-to-head dimer 168 of 46% ee in 75% yield [40]. This reaction was found to proceed in a single crystal-to-single crystal manner. The mechanism of the reaction was studied by X-ray crystal structural analysis [41]. 

N-HYDROXY-4-(p-CHLOROPHENYL)THIAZOLE-2(3H)-THIONE [2(3H)-Thiazolethione, 4-(4-chlorophenyl)-3-hydroxy-]... 

Tanaka, K., Kakinoki, O., and Toda, F. (1992) Regio- and Enantioselective Photodimerisation of Cyclohex-2-enone as an Inclusion Complex with a New Optically Active Host, (-)-l,4-Bis[3-(o-chlorophenyl)-3-hydroxy-3-phenyl- l-propynyl]benzene Preparation of the Optically Pure (-)-symtram-Dimer of Cyclohex-2-enone, J. Chem. Soc., Perkin Trans. 1, 307. 

Photogeneration efficiencies of 4,4 -(9-oxo-9H-fluorene-2,7-diyl)bis(azo)-bis[N-(2-chlorophenyl)-3-hydroxy-2-naphthalenecaiboxamide] (AZO-FO) in single- and dual-layer configurations were measured by Umeda et al. (1990). The dual-layer materials contained 4-N,N-bis(4-methylphenyl)amino-a-phenyl-stilbene (MAPS) in the transport layer. Figure 5 shows the field dependencies. 

It was found that simple benzene derivatives of 6, (S,S)-(-)-l,4-bis[3-(o-chloro-phenyl)-3-hydroxy-3-phenyl-l-propynyl]benzene (46a) and (S,S)-(-)-l,3-bis[3-(o-chlorophenyl)-3-hydroxy-3-phenyl-l-propynyl]benzene (46b) are useful for the direct enanhomeric separation of 44a [20]. When a soluhon of 46a and two molar equivalents of rac-44a in EtOH was kept at room temperature for 12 h, a 1 1 1 complex of 46a, (-)-44a and EtOH was obtained as colorless prisms, which upon heating in vacuo gave (-)-44a of 100% ee in 55% yield. Interestingly, when the complexation was carried out in toluene, a 1 2 complex of 46a and (-r)-44a was formed. 

Amino-5-chloro-2-hydroxyphenyl)(4-methylphenyl)methanone, 251 (2-Amino-5-chlorophenyl)(2-hydroxy-5-methylphenyl)methanone, 251 (3-Amino-2-hydroxy-5-methylphenyl)(4-chlorophenyl)methanone, 252 (4-Chlorophenyl)[3-hydroxy-4-(methylamino)phenyl]methanone, 252... 

Chlorophenyl)-3-hydroxy-1 -phenyltriazene, C-00233 A -(4-Chlorophenyl)-A -hydroxy-3-(2-thienyl)-2-propenamide, C-00234. -(4-Chlorophenyl)-A -hydroxy-3-(3,4,5-... 

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