493-50-5Relevant articles and documents
Synthesis, Structure, and Properties of Amino-Substituted Benzhydrylium Ions – A Link between Ordinary Carbocations and Neutral Electrophiles
Mayer, Robert J.,Hampel, Nathalie,Mayer, Peter,Ofial, Armin R.,Mayr, Herbert
, p. 412 - 421 (2018/09/14)
Optimized synthetic procedures for the straightforward access to eleven amino-substituted diarylmethylium tetrafluoroborates are described. These benzhydrylium ions cover a range of seven orders of magnitude in electrophilicity and provide a link between ordinary carbocations and neutral electrophiles. Five of these highly stabilized benzhydrylium tetrafluoroborates were characterized by single-crystal X-ray crystallography. While the experimentally determined bond lengths and angles in the solid state perfectly agree with those calculated by DFT methods for the gas phase and aqueous solution, crystal packing accounts for large differences in the twist angles of the aryl groups found in the solid state as compared to calculated structures.
Methine compound, material for organic luminescence element, organic luminescence element using the same
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, (2008/06/13)
Disclosed is a novel methine compound, for example, which is represented by the following formula (I): wherein R1, R2, R3, R4and R5each represents a hydrogen atom or a substituent; X represents an oxygen atom, a sulfur atom, or N—R6; Z represents —NR7R8, or —OG; R6, R7and R8each represents a hydrogen atom or a substituent; G represents a hydrogen atom, a cation or a substituent; L1, L2and L3each represents a substituted or unsubstituted methine group; n represents 1 or 2; and W represents an electron attractive group. Also, a material for organic luminescence element is disclosed which is a compound represented by the following formula (II): wherein R1, R2, R3, R4, R5, R6, R7and R8each represents a hydrogen atom or a substituent; R9represents a hydrogen atom or a substituent other than a methyl group; X represents an oxygen atom, a sulfur atom, or N—R10, wherein R10represents a hydrogen atom or a substituent; Z1represents an atomic group necessary for forming a5- or6-membered ring; L1and L2each represents a substituted or unsubstituted methine group; and n represents 1 or 2.
Hypoglycemic thiazolidinediones
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, (2008/06/13)
Hypoglycemic 5-[1-(5,6,7,8-tetrahydro-2-napthyl-; 1,2,3,4-tetrahydro-6-quinolyl-; 2-indanyl-; and 2-indolyl)alkyl]thiazolidine-2,4-dione derivatives, pharmaceutically acceptable salts thereof, and a method for their use in the treatment of hyperglycemic mammals.
Amphetamine derivatives
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, (2008/06/13)
Compounds having the general formula STR1 or pharmaceutically acceptable salts thereof, in which formula R1 and R2 are the same or different and each represents a hydrogen atom, a lower alkyl group or a halogen atom, R3 represents a lower alkyl group or a benzyl group, R4 represents a hydrogen atom, a lower alkyl group, a benzyl group or a CH2 CH2 CH2 --bridge connected to the phenyl ring in ortho-position relative to the N-substituent, R5 represents a hydrogen atom or a methyl group and R6 represents a lower alkyl group, provided that R1 and/or R2 represents a lower alkyl group or a halogen atom when R3 represents a methyl group, R4 represents a methyl group and R5 represents a hydrogen atom; methods for the preparation thereof; intermediates useful for their preparation; pharmaceutical preparations containing at least one of these compounds; and the use thereof in the treatment of depressive states and alleviating anxiety.