摘要:
Disclosed in the present invention are a functionalized fluoroalkyl silane compound and a synthetic method therefor. The method comprises: dissolving a halosilane and a fluoroalkyl source in an organic solvent; and synthesizing functionalized fluoroalkyl silane under the effect of an alkali or a tertiary phosphine compound. The functionalized fluoroalkyl silane can not only be used for constructing a series of high added-value compounds such as fluoroalkyl substituted alcohols, ketones and amines that can be constructed by conventional TMSRf, but also can transfer, by means of appropriate conversion, a functional group on a silicon protecting group to the obtained addition product in an addition reaction, for synthesizing some fluorine-containing compounds that cannot be synthesized by using a conventional TMSRf reagent, thereby greatly improving the synthesis efficiency and the atom economy of reactions. Also disclosed in the present invention are more excellent reaction efficiency and enantioselectivity, compared with conventional TMSCF3, exhibited by trifluoromethyl chloromethylsilane in synthesis of a 2-trifluoromethylquinoline compound and in an asymmetric trifluoromethylation reaction with α,β-unsaturated ketones.
摘要:
The present invention provides a process in which a ketone is directly reacted with an aromatic compound in a single reaction step to obtain the corresponding alkylated aromatic compound in a higher yield. By reacting an aromatic compound with a ketone and hydrogen in the presence of a solid acid substance and a catalyst composition containing Cu and Zn in a ratio of Zn to Cu ranging from 0.70 to 1.60 (atomic ratio), the corresponding alkylated aromatic compound is prepared.
摘要:
Compositions obtained by mixing oxygen-containing phosphazenes with tertiary alcohols at a temperature of from 0.degree. C. to 70.degree. C. and a pressure of from 900 to 1100 hPa are useful in processes for equilibrating and/or condensing organosilicon compounds.
摘要:
A process for producing a benzhydrol compound (II) which comprises hydrogenating a benzophenone compound (I) in the presence of a hydrogenation catalyst consisting of a transition metal complex, a base and an optically active diamine compound: ##STR1## wherein R.sup.1 to R.sup.10 each represents H, OH, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, C.sub.1-4 alkanoyl, etc., R.sup.2 and R.sup.3, and R.sup.8 and R.sup.9 may form --CH.dbd.CH--CH.dbd.CH--, or any two of R.sup.1 to R.sup.9 adjacent to each other may be bonded to thereby form --OCH.sub.2 O-- or --(CH.sub.2).sub.3 --. By using this process, optically active benzhydrol compounds which have a high purity and are useful as, for example, intermediates in the synthesis of drugs can be produced by simple procedures.
摘要:
Process of preparation of alcohols by the reaction of an organic halide with a carbonyl compound in an organic solvent, in the presence of metallic manganese, followed by hydrolysis of the reaction product; the reaction is initiated and activated by an ester present in the reaction medium.
摘要:
New 9-anthrylalkyl compounds having the general formula ##STR1## wherein R is hydrogen or an alkyl group, whereby, however, not more than one of the groups R is an alkyl group; R.sub.1 is hydrogen, lower alkyl, halogen or nitro; n is an integer of from 1 to 7, whereby, however, the total number of carbon atoms in the group --CHR--(CHR).sub.n -- does not exceed 8; and X is halogen, an azide group or a succinimidyl group.The new compounds are prepared from 9-anthrylalcohols which are reacted with a compound X--CO--X wherein X is a halogen, and then optionally with compounds giving azide or succinimidyl group. The compounds are used as derivatization reagents for separation and detection purposes.Intermediates for preparation of the above defined 9-anthrylalkyl compounds wherein one R is an alkyl group are 9-anthrylalcohols with the group --CHR--(CHR).sub.n --OH, wherein one R is an alkyl group.
摘要:
The invention relates to a compound of formula: ##STR1## in which formula: R.sub.1 to R.sub.4 denote, independently, H, OH, C.sub.1 -C.sub.6 alkyl or C.sub.1 -C.sub.6 alkoxy; andA denotes --COR.sub.5, R.sub.5 being H when at least one of the substituents R.sub.1 to R.sub.4 is other than H; C.sub.1 -C.sub.6 alkyl; amino; (C.sub.1 -C.sub.6)alkylamino; di(C.sub.1 -C.sub.6) alkylamino; arylamino; benzylamino; amino drived from a cyclic or heterocyclic amine; (--COR.sub.5 being able, when it is an amide group, to be the amide group of an amino acid or of a glucosamine); or alternatively R.sub.5 denotes --OR.sub.6, R.sub.6 being H or (C.sub.1 -C.sub.6)alkyl; C.sub.1 -C.sub.6 mono- or polyhydroxyalkyl, or aryl or benzyl, both optionally substituted; --OR.sub.6 also being able to be derived from a sugar; and the salts and isomers of this compound. The invention also relates to a process for preparing this compound and medicinal and cosmetic compositions containing them.
摘要:
A benzonaphthalene compound has the formula ##STR1## wherein R.sub.1 represents (i) ##STR2## or (ii) --CH.sub.2 OH; R.sub.6 represents ##STR3## or OR.sub.7 wherein R.sub.7 represents hydrogen, alkyl having 1-20 carbon atoms, monohydroxyalkyl or polyhydroxyalkyl, r' or r" represent hydrogen, lower alkyl, mono or polyhydroxyalkyl, aryl or a residue of an amino acid or a sugar, or together form a heterocycle; R.sub.2 represents hydrogen, alkyl having 1-15 carbon atoms, alkoxy having 1-4 carbon atoms or a cycloaliphatic radical; R.sub.3 represents hydrogen, hydroxy, alkyl having 1-4 carbon atoms, alkoxy having 1-10 carbon atoms, a cycloaliphatic radical, a thiocycloaliphatic radical or --O--Si(CH.sub.3).sub.2 --R.sub.8 wherein R.sub.8 represents lower alkyl; and R.sub.4 and R.sub.5 represent hydrogen, lower alkyl, hydroxy or lower acyloxy.This compound is useful in the topical and systemic treatment of dermatologic diseases and in the treatment of the degeneration of conjuctive tissues. The compound also possesses anti-tumor activity.
摘要:
This invention relates to novel lipoxygenase inhibitors possessing anti-inflammatory and anti-allergic activities. The present new compounds are di- and tetra-hydroquinoline or di- and tetra-hydronapthalene derivatives, more particularly, 1,2-, 1,4-, 5,6-, or 7,8-dihydro; 1,2,3,4-tetrahydro-; 5,8-dihydro-; or 5,6,7,8-tetrahydroquinoline or napthalene derivatives of a compound of the formula: ##STR1## and oxides, quaternary ammonium salts and acid salts thereof; wherein A is CH or N;Z is an alkylene chain containing up to 10 carbon atoms in the principal chain and a total of up to 12 carbon atoms and the said alkylene chain may be attached to the phenyl group through an oxygen atom;R is the substituent OR.sub.6 attached to one of the carbon atoms of Z in which R.sub.6 is H, lower alkyl or phenyl;X is --O(CHR.sub.5).sub.m --, alkylene of up to 2 carbon atoms in the principal chain and up to a total of 4 carbon atoms or ##STR2## wherein R.sub.5 is H or CH.sub.3 ;R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each H or OH;n'=1 or 2; andm=1 or 2.
摘要:
New 2,6-disubstituted derivatives of naphthalene have the formula ##STR1## wherein n is 1 or 2,R.sub.1 to R.sub.4 are hydrogen or CH.sub.3,R.sub.5 is ##STR2## (iv) 2-oxazolinyl, wherein m is 0 or 1, R.sub.6 is hydrogen, alkyl, OR.sub.9 wherein R.sub.9 is H, alkyl or ##STR3## wherein R.sub.10 is alkyl or aryl, or R.sub.6 is ##STR4## when m=1, r' and r" representing H, alkyl, mono- or poly-hydroxyalkyl, aryl or a heterocycle when taken together, R.sub.7 is H or alkyl, R.sub.8 is H, alkyl and the acetal of said compounds, and the salts of the compounds of formula I. These compounds are usefully employed in the pharmaceutical and cosmetic fields.