摘要:
The subject of the invention are new functionalized unsaturated double-decker derivatives of divinylsilsesquioxanes of the general formula 1. In the formula, R1 are the same and stand for an aryl group containing from 1 to 2 rings, R2 are the same and stand for an alkyl group containing carbon atoms from C1 to C2, substituted or unsubstituted aryl group containing from 1 to 2 rings, R3 are the same and stand for a substituted or unsubstituted aryl group containing from 1 to 2 rings or a group of the formula —R4-R5—, where R4 stands for an alkyl group containing carbon atoms from C1 to C3, while R5 stands for aryl group containing from 1 to 2 rings.
摘要:
The subject of the invention is the method of synthesis of fluoracarbofunctional cage silsesquioxanes of the general formula in which • R1 stands for HCF2(CF2)n(CH2)mO(CH2)3Si(CH3)2O orHCF2(CF2)n(CH2)mO(CH2)3 group in which n=1-12, m=1-4; • R2, R3, R4, R5, R6, R7, R8 can be the same as R1 or different from it and stand all either for the (C1-C25) alkyl group or any aryl group, based on hydrosilylation of fluoroalkyl-allyl ether with an appropriate hydrogen-silsesquioxane in the presence of siloxide rhodium complex [{Rh(OSiMe3)(cod)}2] as a catalyst.
摘要:
Mixtures of salts to dissolve cellulose. The present invention refers to a composition based in a eutectic mixture of imidazolium salts and natural biopolymers, in particular cellulose, its manufacturing process and method of use to obtain foils or films.The composition is based in a eutectic mixture of imidazolium salts with 0.1 to 50 wt % of biomass.
摘要:
The subject matter of the invention is novel 2,3′-anhydro-2′-deoxy-5-fluorouridine derivatives of general formula 1 where R is a trifluoromethyl, 2,2,2-trifluoroethyl, difluoromethyl, perfluoroethyl, 1-fluoroethyl, 2-fluoroethyl, 1,1 -difluoroethyl, 1,2-difluoroethyl, 2,2-difluoroethyl, 1,1,2-trifluoroethyl, 1,2,2-trifluoroethyl, 1,1,2,2-tetrafluoroethyl, 1,2,2,2-tetrafluoroethyl group. In a second aspect, the subject matter of the invention is a process for the manufacture of 2,3-anhydro-2′-deoxy-5-fluorouridine derivatives of general formula 1.In a third aspect, the subject matter of the invention is an application of 2,3′-anhydro-2′-deoxy-5-fluorouridine derivatives of general formula 1 in the anticancer treatment of breast cancer, cervical cancer, lung cancer and nasopharynx cancer.
摘要:
New (E)-styryl-alkynylsubstituted silicon compounds having the generalized formula 1 and A new method of obtaining (E)-styryl-alkynylsubstituted silicon compounds having the generalized formula 1. A denotes: phenylmethylsilyl, 1,4-bis(dimethylsilyl)benzene, 1,2-bis(dimethylsilyl)ethane, 1,1,3,3-tetramethyldisilazane, 1,1,3,3-tetramethyldisiloxane, R′ denotes: tri(isopropyl)silyl, 1-pentyl, 2-(trimethylsiloxy)-2-butyl, 1-(trimethylsiloxy)-1-cyclohexyl, triethylgermyl, R′ denotes: H or Cl and when A denotes phenylmethylsilyl then R″ denotes also methyl or a methoxy group. A method of obtaining (E)-styrylalkynylsubstituted silicon compounds having the generalized formula 1 where A, R′ and R″ denote the same as stated above by way of a silylative coupling reaction between a suitable substituted styrene and a suitable vinyl-alkynylsubstituted silicon compound in the presence of a ruthenium(II) complex as catalyst.
摘要:
The subject of invention is the method of synthesis of fluorocarbofunctional alkoxysilanes and chlorosilanes of the general formula HCF2(CF2)n(CH2)mOC3H7SiR1R2R3 in which -n takes values from 1 to 12, m takes values from 1 to 4,—R1 stands for an alkoxy group or halogen, if R1 stands for an alkoxy group, then R2 and R3 can be the same or different and stand for an alkoxy group containing C=1-4, alkyl group containing C=1-12 or an aryl group, if R1 stands for a halogen, then R2 and R3 can be the same or different and stand for based on hydrosilylation of an appropriate fluoroalkyl-allyl ether with an appropriate trisubstituted silane of the general formula HSiR1R2R3 in the presence of siloxide rhodium complex [{Rh(OSiMe3)(cod)}2] as a catalyst.
摘要:
New (triorganosilyl)alkynes and their derivatives having general formula R1—C≡C—Z are provided along with methods for the preparation of (triorganosilyl)alkynes and their derivatives having the general formula R1—C≡C—Z. The methods may include silylative coupling of terminal alkynes with halogenotriorganosilanes in the presence of an iridium catalyst and a tertiary amine.
摘要:
The subject matter of the invention is novel 2′,5′-dideoxy-5-fluorouridine derivatives of general formula 1. wherein R1 denotes cinchona alkaloid fragment with defined absolute configuration at C-8 and C-9 atoms.In a second aspect, the subject matter of the invention is a process for the manufacture of 2′,5′-dideoxy-5-fluorouridine derivatives of general formula 1.In a third aspect, the subject matter of the invention is an application of 2′,5′-dideoxy-5-fluorouridine derivatives of general formula 1 in the anticancer treatment of breast cancer, cervical cancer, lung cancer and nasopharynx cancer.
摘要:
A new cage monovinylgermasilsesquioxanes of the general formula 1, in which R1 are the same and represent a C1 to C6 alkyl group or a cyclopentyl or cyclohexyl group or a phenyl group. The invention also relates to the method of synthesis of cage monovinylgermasilsesquioxanes of the general formula 1.
摘要:
The subject of the invention is the method of synthesis of fluoracarbofunctional cage silsesquioxanes of the general formula in which•R1 stands for HCF2(CF2)n(CH2)mO(CH2)3Si(CH3)2O or HCF2(CF2)n(CH2)mO(CH2)3 group in which n=1-12, m=1-4;•R2, R3, R4, R5, R6, R7, R8 can be the same as R1 or different from it and stand all either for the (C1-C25) alkyl group or any aryl group, based on hydrosilylation of fluoroalkyl-allyl ether with an appropriate hydrogen-silsesquioxane in the presence of siloxide rhodium complex [{Rh(OSiMe3)(cod)}2] as a catalyst.