摘要:
A compound having the formula below, where R is —H or —CH2—CH3; n, x, y, and z are nonnegative integers; R2 is an aliphatic group or oxyaliphatic group; and R3 is an aliphatic group.
摘要:
Compounds of peptide mimetic nature having the general formula I 1 wherein a and b are independently 1 or 2, R1 and R2 are independently H or C1-6alkyl, G and J are independently, inter alia, aromats, and D and E are independently several different groups are growth hormone secretagogous with improved bioavailability.
摘要:
Disclosed is a three step synthesis of 11-aryl-5,6-dihydro-11H-dibenznullb,enullazepines from a 2-aminobenzophenone represented by the following structural formula: 1 and a starting material represented by the following structural formula: 2 ,2 Phenyl Ring A, Phenyl Ring B and Phenyl Ring C are independently unsubstituted or substituted with one, two or three substituents. Each substituent on Phenyl Ring A, Phenyl Ring B and Phenyl Ring C is independently chosen. R is nullH, a aliphatic group, a substituted aliphatic group, an aryl group, a substituted aryl group, nullC(O)nullRnull, nullC(O)nullH, nullC(O)nullNHRnull, nullS(O)2Rnull, nullC(O)nullC(O)nullRnull, nullC(O)nullC(O)nullH, nullC(S)nullRnull, nullC(S)nullH, nullC(O)nullORnull, nullC(S)nullORnull, nullC(O)nullSRnull, nullC(S)nullSRnull, nullC(O)nullNRnull2 or nullC(O)nullC(S)nullRnull. Rnull is an aliphatic group, a substituted aliphatic group, an aryl group or a substituted aryl group. R1 is a leaving group. The present invention also includes novel compounds which are intermediates in the preparation of 11-aryl-5,6-dihydro-11H-dibenznullb,enullazepines.
摘要:
A novel compound, 2-(N,N-dimethyamino) indan-1,3-dione, is useful as an ultraviolet absorbent and is produced from salicylaldehyde, betaine and acetic anhydride.
摘要:
Cationic steroidal antimicrobial (CSA) compounds having amide functionality and methods of manufacturing such CSA compounds. The CSA compound can be a compound of Formula (I), Formula (II), Formula (III), or a salt thereof: where R18 has the following structure: —R20—(C═O)—N—R21R22 R20 is omitted or substituted or unsubstituted alkyl, alkenyl, alkynyl, or aryl, and R21 and R22 are independently selected from hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, or substituted or unsubstituted aryl, provided that at least one of R21 and R22 is not hydrogen.
摘要:
A process for the preparation of an 1,1-disubstituted oxirane is disclosed, wherein an organic sulphide is reacted in a polar solvent with an educt containing a leaving group attached to a primary or secondary carbon atom, and/or the sulfonium salt formed in this way is reacted with a ketone in presence of a base and a polar solvent. Oxiranes of the type obtained may be further converted into the corresponding α-hydroxyketone or α-aminoketone, either in one step by subjecting to aerobic oxidation in the presence of a transition metal catalyst, or in two steps by hydrolyzation in the presence of an aqueous acid to the corresponding dialcohol and subsequent selective oxidation. Further described are some novel epoxide intermediates. The α-hydroxyketones and α-aminoketones thus obtainable are useful inter alia as photoinitiators.
摘要:
Stabilized cationic ammonium compounds are described. The compounds are stabilized with pyridine-based chelators and/or heteroketo-based chelators that impede the generation of nitrogen comprising groups from the cationic ammonium compounds.
摘要:
Stabilized cationic ammonium compounds are described. The compounds are stabilized with pyridine-based chelators and/or heteroketo-based chelators that impede the generation of nitrogen comprising groups from the cationic ammonium compounds.
摘要:
This invention discloses a process for making dilithium initiators in high purity. This process can be conducted in the absence of amines which is desirable since amines can act as modifiers for anionic polymerizations. The dilithium compounds made are highly desirable because they are soluble in aromatic solvents. The present invention also discloses a tire which is comprised of a generally toroidal-shaped carcass with an outer circumferential tread, two spaced beads, at least one ply extending from bead to bead and sidewalls extending radially from and connecting said tread to said beads, wherein said tread is adapted to be ground-contacting, and wherein said tread is a cured the rubber formulation which is comprised of (a) at least one rubbery polymer containing functional groups of the structural formula: wherein R, R′ and R″ can be the same or different, wherein R is selected from the group consisting of hydrogen atoms, alkyl groups, aryl groups, alkaryl groups, and amino aryl groups, and wherein R′ and R″ represent alkyl groups alkyl groups that contain from 1 to 8 carbon atoms, and (b) at least one member selected from the group consisting of carbon black and silica.