36995 results about "Perylene derivatives" patented technology

A γ,δ-unsaturated carboxylic acid silyl ester is prepared by reacting an α,β-unsaturated carboxylic acid ester with a hydrosilane or hydrosiloxane in the presence of tris(pentafluorophenyl)borane. γ,δ-Unsaturated carboxylic acid derivatives are readily prepared through fewer steps and in high yields.

A material for an organic electroluminescent device including an imine derivative represented by the following formula (Ia) or (Ib),wherein Y1 to Y4 are independently a carbon atom or a nitrogen atom; R1 to R4 are independently hydrogen, an alkyl group, an aryl group, a heterocycle, a halogen atom, a fluoroalkyl group or a cyano group; and R1 and R2, or R3 and R4 may be bonded together to form a ring.

The present inventors have developed a key intermediate for the production of C2 substituted PBDs, which has a leaving group at the C2 position, a carbamate protecting group at the N10 position and a protected hydroxy group at the C11 position. In a first aspect, the present invention comprises a compound with a the formula (I), wherein: R10 is a carbamate-based nitrogen protecting group; R11 is an oxygen protecting group; and R2 is a labile leaving group. In a further aspect, the present invention comprises a method of synthesising a compound of formula (III), or a solvate thereof, from a compound of formula (I) as defined in the first aspect, R16 is either O—R11, wherein R11 is as defined in the first aspect, or OH, or R10 and R16 together form a double bond between N10 and C11; and R15 is R. The other substituents are defined in the claims. Further aspects of the present invention relate to compounds of formula (III) (including solvates thereof when R10 and R16 form a double bond between N10 and C11, and pharmaceutical salts thereof), pharmaceutical compositions comprising these, and their use in the manufacture of a medicament for the treatment of a proliferative disease.

Compounds and compositions comprising specific metal salts of hexahydrophthalic acid (HHPA) in order to provide highly desirable properties within thermoplastic articles are provided. The inventive HHPA derivatives are useful as nucleating and / or clarifying agents for such thermoplastics, are practical and easy to handle. Such compounds provide excellent crystallization temperatures, stiffness, and acid scavenger compatibility within target polyolefins. Also, such compounds exhibit very low hygroscopicity and therefore excellent shelf stability as powdered or granular formulations. Thermoplastic additive compositions and methods of producing polymers with such compounds are also contemplated within this invention.