Detail of "352-13-6"

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Liquid-crystal compositions containing halogenated aromatic compounds

Liquid-crystal compositions containing halogenated aromatic compounds. Sugimori, Shigeru; Goto, Yasuyuki; Ogawa, Tetsuya; Isoyama, Toyoshiro; Nigorikawa, Kazunori; Kitano, Yoshimasa; Yoshida, Naoyuki; Furukawa, Yoshito (Chisso Corp., Japan). Jpn.In this study，108177-44-2 is also used. Kokai Tokkyo Koho JP 61225147 A2 6 Oct 1986 Showa, 4 pp. (Japan) CODEN: JKXXAF. CLASS: ICM: C07C043-174. ICS: C09K019-30; G02F001-13. ICA: G09F009-35. APPLICATION: JP 85-64614 28 Mar 1985. DOCUMENT TYPE: Patent CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes) Section cross-reference(s): 25, 75 The compns., useful for twisted-nematic display devices, contain arom. compds. I (R = C1-12 alkyl; R1-5 = H, F, Cl, Br, 31 being halo). Thus, trans-4-methoxymethyl-1-(4-iodophenyl)cyclohexane was treated with 4-FC6H4MgBr in Et2O in the presence of NiCl2(PPh3)2 to give 45.2% I (R = Me, R1-2 = R4-5 = H, R3 = F) (II). A liq. crystal compn. contg. 85% trans-4-alkyl-(4-cyanophenyl)cyclohexanes and 15% II showed nematic-isotropic transition point 62°, dielec. anisotropy 13.0, and viscosity at 20° of 25 cP vs. 52°, 11.2, and 23.4 cP, resp., for a control without II. .

Stereoselective synthesis of 2b-carbomethoxy-3b-phenyltropane derivatives

Stereoselective synthesis of 2b-carbomethoxy-3b-phenyltropane derivatives. Enhanced stereoselectivity observed for the conjugate addition reaction of phenylmagnesium bromide derivatives with anhydrous dichloromethane.In this study， 352-13-6 and 50-36-2 are also used. Xu, Lifen; Trudell, Mark L. (Dep. Chem., Univ. New Orleans, New Orleans, LA 70148, USA). Journal of Heterocyclic Chemistry, 33(6), 2037-2039 (English) 1996 HeteroCorporation. CODEN: JHTCAD. ISSN: 0022-152X. DOCUMENT TYPE: Journal CA Section: 31 (Alkaloids) The use of dichloromethane as a solvent for the conjugate addn. reaction of preformed ethereal solns. of phenylmagnesium bromide derivs. with anhydroecgonine Me ester (I) was found to enhance the stereoselectivity of the reaction and provide the 2b-carbomethoxy-3b-phenyltropane derivs. II (R = H, Me,Cl, F) in high yield. .