Abstract:
Es wir ein Verfahren zur decarboxylierenden C-C Verknüpfung durch Umsetzung von Carbonsäuresalzen mit Kohlenstoffelektrophilen in Gegenwart von Übergangsmetallverbindungen als Katalysatoren beansprucht. Das Verfahren stellt eine decarboxylierende Kreuzkupplung von Carbonsäuresalzen mit Kohlenstoffelektrophilen dar, worin der Katalysator zwei Übergangsmetalle bzw. Übergangsmetallverbindungen enthält, von denen eine bevorzugt in Oxidationsstufen vorliegt, die sich um eine Einheit voneinander unterscheiden, und somit eine radikalische Decarboxylierung katalysiert, während das zweite bevorzugt Oxidationsstufen annimmt, die sich um zwei Einheiten voneinander unterscheiden und somit die Zweielektronenprozesse einer Kreuzkupplungsreaktion katalysiert.
Abstract:
The invention relates to 2,7-substituted-9-substituted fluorenes and 9-substituted fluorene oligomers and polymers. The fluorenes, oligomers and polymers are substituted at the 9-position with two hydrocarbyl moieties which may optionally contain one or more of sulfur, nitrogen, oxygen, phosphorous or silicon heteroatoms; a C5-20 ring structure formed with the 9-carbon on the fluorene ring or a C4-20 ring structure formed with the 9-carbon containing one or more heteroatoms of sulfur, nitrogen or oxygen; or a hydrocarbylidene moiety. In one embodiment, the fluorenes are substituted at the 2- and 7-positions with aryl moieties which may further be substituted with moieties which are capable of cross-linking or chain extension or a trialkylsiloxy moiety. The fluorene polymers and oligomers may be substituted at the 2- and 7'-positions. The monomer units of the fluorene oligomers and polymers are bound to one another at the 2- and 7'-positions. The 2,7'-aryl-9-substituted fluorene oligomers and polymers may be further reacted with one another to form higher molecular weight polymers by causing the optional moieties on the terminal 2,7'-aryl moieties, which are capable of cross-linking or chain extension, to undergo chain extension or cross-linking. Also disclosed are processes for preparing the disclosed compounds.
Abstract:
The present invention relates to therapeutically active heterocyclic compounds of formula (I) wherein n is 0, 1 or 2; and X is -O-, -S, -N(R )- or -CH2-; and R is H, NH2, NHR or OH; and R and R independently are H, COOH, COOR , CONH2, CONHR , CON(R )2, CONHSO2R or tetrazole; and R is H, OH, NH2, NHR , CF3, C1-8-alkyl, C2-8-alkenyl, C2-8-alkynyl, C3-6-cycloalkyl, phenyl or C1-4-alkoxy; and R is H, C1-8-alkyl, C2-8-alkenyl, C2-8-alkynyl, phenyl or C3-6-cycloalkyl; and ring A can be partly or completely saturated or aromatic, or a salt thereof with a pharmaceutically acceptable acid or base, a method of preparing the same and to pharmaceutical compositions comprising the compounds. The novel compounds are useful in treating diseases in the central nervous system related to the metabotropic glutamate receptor system.
Abstract:
Fluorobenzole derivatives of formula (I) in which: R is H, an unsubstituted alkyl or alkenyl residue with 1 to 15 C atoms or one substituted by CN or CF3 or at least simply by halogen, in which in these residues one or several CH2 groups may be independently replaced by -O-, -S-, -<>-, -CO-, -CO-O-, -O-CO- or -O-CO-O- in such a way that O atoms are not directly linked together; A?1 and A2¿ are mutually independently (a) a trans-1,4-cyclohexyl residue in which one or more non-adjacent CH¿2? groups may also be replaced by -O- and/or -S-, (b) a 1,4-phenyl residue in which one or two CH groups may be replaced by N, (c) a residue from the group 1,4-cyclohexylene, 1,4-bicyclo(2,2,2)-octylene, piperidine-1,4-diyl, naphthaline-2,6-diyl, decahydronaphthaline-2,6-diyl and 1,2,3,4-tetrahydronaphthaline-2,6-diyl; in which the residues (a) and (b) may be replaced by CN or fluorine; Z?1 and Z2¿ are independently -CO-O-, -O-CO-, -CH¿2?O, -OCH2-, -CH2CH2-, -CH=CH-, -CC- or a single bond, one of the residues Z?1 and Z2¿ may also be -(CH¿2?)4- or -CH=CH-CH2CH2-; L is H or F; m is 0, 1 or 2; Y is F or Cl; and Q is a single bond, -CF2-, -OCF2- or -OHCF-; with the proviso that L = F if Q is a single bond; are suitable as components of mesomorphous media.
Abstract:
Novel dibenzosuberane-based compounds, compositions containing such compounds, and electronic devices containing such compounds as electron transport materials are described herein. Methods for making the dibenzosuberane-based compounds of the present invention are also described.
Abstract:
A two-step process for the preparation of fluoroolefin compounds of formula (I) wherein R is hydrogen or alkyl, and R is alkyl or cyclopropyl, or R and R are taken together with the carbon atom to which they are attached to form a cyclopropyl group; Ar is phenyl or naphthyl both of which are optionally substituted; Ar is phenoxyphenyl, biphenyl, phenyl, benzylphenyl, or benzoylphenyl, all of which may be optionally substituted, comprising reacting fluorobromoolefin compounds of formula (II) with organozinc compounds of formula (III) (BrZnCH2Ar ) or (IV) (Zn(CH2Ar )2) in the presence of a palladium catalyst and a solvent, which compounds of formula (II) are obtained by reacting aldehyde compounds of formula (V) with (a) fluorotribromomethane, (b) a tri(substituted)phosphine or a hexaalkylphosphoramide or a mixture thereof, and (c) zinc, in the presence of a solvent, compounds of formula (II).
Abstract translation:制备式(I)的氟烯烃化合物的两步法,其中R是氢或烷基,R 1是烷基或环丙基,或R和R 1与它们所在的碳原子一起 连接形成环丙基; Ar是任选被取代的苯基或萘基; Ar 1是苯氧基苯基,联苯基,苯基,苄基苯基或苯甲酰基苯基,它们都可以任选被取代,包括使式(II)的氟代溴代烯烃化合物与式(III)的有机锌化合物(BrZnCH2Ar1)或(IV )(Zn(CH 2 Ar 1)2)在钯催化剂和溶剂的存在下,式(II)化合物通过使式(V)的醛化合物与(a)氟代溴甲烷反应获得,(b) 三(取代)膦或六烷基磷酰胺或其混合物,和(c)锌在溶剂存在下,式(II)化合物。
Abstract:
A two-step process for the preparation of fluoroolefin compounds of formula (I) wherein R is hydrogen or alkyl, and R is alkyl or cyclopropyl, or R and R are taken together with the carbon atom to which they are attached to form a cyclopropyl group; Ar is phenyl or naphthyl both of which are optionally substituted; Ar is phenoxyphenyl, biphenyl, phenyl, benzylphenyl, or benzoylphenyl, all of which may be optionally substituted, comprising reacting fluorobromoolefin compounds of formula (II) with organozinc compounds of formula (III) (BrZnCH2Ar ) or (IV) (Zn(CH2Ar )2) in the presence of a palladium catalyst and a solvent, which compounds of formula (II) are obtained by reacting aldehyde compounds of formula (V) with (a) fluorotribromomethane, (b) a tri(substituted)phosphine or a hexaalkylphosphoramide or a mixture thereof, and (c) zinc, in the presence of a solvent, compounds of formula (II).
Abstract translation:制备式(I)的氟烯烃化合物的两步法,其中R是氢或烷基,R 1是烷基或环丙基,或R和R 1与它们所在的碳原子一起 连接形成环丙基; Ar是任选被取代的苯基或萘基; Ar 1是苯氧基苯基,联苯基,苯基,苄基苯基或苯甲酰基苯基,它们都可以任选被取代,包括使式(II)的氟代溴代烯烃化合物与式(III)的有机锌化合物(BrZnCH2Ar1)或(IV )(Zn(CH 2 Ar 1)2)在钯催化剂和溶剂的存在下,式(II)化合物通过使式(V)的醛化合物与(a)氟代溴甲烷反应获得,(b) 三(取代)膦或六烷基磷酰胺或其混合物,和(c)锌在溶剂存在下,式(II)化合物。
Abstract:
Disclosed herein are polymers made by free radically polymerizing the novel compound vinyl(perfluorocyclopropane), and optionally other monomers to form copolymers. The repeat unit formed by vinyl(perfluorocyclopropane) contains an olefinic bond, making it particularly useful as a grafting and/or crosslinking site.
Abstract:
The present invention is directed to a process for preparation of fluorinated alcohols of Formula (I): R f CH 2 CH 2 OH (I) by contacting a fluorinated iodide with an alkyl vinyl ether in the presence of an initiator and a base to generate an intermediate hemi-acetal or aldehyde or a mixture thereof, followed by hydrogenation of the hemi-acetal of Formula (II): R f CH 2 CH(OC x H 2x+1 )m(OH) p (II) or aldehyde of Formula (III): R f CH 2 CHO (III) or a mixture thereof, to yield a compound of Formula (I).
Abstract translation:本发明涉及通过在引发剂和碱的存在下使氟化碘与烷基乙烯基醚接触来制备式(I)的氟化醇:RfCH 2 CH 2 OH(I)的方法,以产生中间体缩醛或 醛或其混合物,然后氢化式(II)的半缩醛:RfCH 2 CH(OC x H 2 x + 1)m(OH)p(II)或式(III)的醛:RfCH 2 CHO(III)或其混合物 ,得到式(I)的化合物。
Abstract:
A catalytic Wittig method utilizing a phosphine including the steps of providing a phosphine oxide precatalyst and reducing the phosphine oxide precatalyst to produce the phosphine; forming a phosphonium ylide precursor from the phosphine and a reactant; generating a phosphonium ylide from the phosphonium ylide precursor; reacting the phosphonium yiide precursor with the aldehyde, ketone, or ester to form the olefin and the phosphine oxide which then reenters the cycle. The invention is also directed to a Mitsunobu reaction catalytic in phosphine.