摘要:
The invention relates to a process for the selective oxidation of alcohols to ketones or to aldehydes by means of an alkali hypohalite under alkaline conditions, which comprises carrying out the oxidation in the presence of a heterogeneous oxidation catalyst that is insoluble in the reaction medium and is selected from the group comprising the compounds of formula (I) (III), wherein n is a number from 3 to 3000; or a 4-oxy-2,2,6,6-tetramethylpiperidin-1-oxyl that is 4-oxy-bound to a Merrifield polymer. The invention relates also to the compounds of formulae (II) and (III) and to the use of the above-mentioned oxidation catalysts for the oxidation of alcohols.
摘要:
The invention relates to a process for the selective oxidation of alcohols to ketones or to aldehydes by means of an alkali hypohalite under alkaline conditions, which comprises carrying out the oxidation in the presence of a heterogeneous oxidation catalyst that is insoluble in the reaction medium and is selected from the group comprising the compounds of formula (I) wherein n is a number from 3 to 3000; or a 4-oxy-2,2,6,6-tetramethylpiperidin-1-oxyl that is 4-oxy-bound to a Merrifield polymer. The invention relates also to the compounds of formulae (II) and (III) and to the use of the above-mentioned oxidation catalysts for the oxidation of alcohols.
摘要:
The present invention relates to a new, selective process for the preparation of mono- and bisacylphosphanes of formula (I) n and m are each independently of the other 1 or 2; R1, if n=1, is e.g. phenyl R1, if n=2, is e.g. C1-C18alkylene or phenylene; R2 is e.g. C1-C18alkyl, phenyl or substituted phenyl; R3 is e.g. C1-C18alkyl, by (I) reacting a phosphorous halide of formula IIa or a phosphorous halide oxide of formula (IIb) or a phosphorous halide sulfide of formula (IIc) with an alkali metal in a solvent in the presence of a proton source; (2) subsequent reaction with m acid halides of formula (III) An oxidation step may follow to obtain mono- and bisacylphosphane oxides or mono-and bisacylphosphane sulfides.
摘要翻译:本发明涉及制备式(I)的单 - 和双酰基磷烷的新的选择性方法,n和m各自独立地为1或2; 如果n = 1,则为R 1。 苯基R 1,如果n = 2,则为例如。 C 1 -C 18亚烷基或亚苯基; R 2是例如。 C 1 -C 18烷基,苯基或取代的苯基; R 3是例如。 通过(I)使式IIa的卤化磷或式(IIb)的卤化磷氧化物或式(IIb)的卤化磷化物或式(Ⅳ) IIc)与碱金属在溶剂中在质子源存在下反应; (2)随后与式(III)的酰卤反应可以进行氧化步骤以获得单酰基和双酰基氧化膦或单酰基和双酰基磷烷硫化物。
摘要:
Compounds of formula (I), wherein Y is, for example, C3-C,12alkylene, butenylene, butynylene, or C4-C,12alkylene interrupted one or more times by non-consecutive —O— or —NR2—; R1 is a reactive group selected from OH, SH, NR3R4, —(CO)—OH, —(CO)—NH2, SO3H, —C(R5)═CR6R7, oxiranyl, —O—(CO)—NH—R8—NCO and —O—(CO)—R9—(CO)—X; R2 is hydrogen, C1-C4alkyl or C2-C4 hydroxyalkyl; R3 and R4 are each independently of the other hydrogen, C1-C4alkyl or C2-C4hydroxyalkyl; R5, R6 and R7 are each independently of the others hydrogen or methyl; R8 is, for example, linear or branched C4-C12alkylene, or phenylene; R9 is, for example, linear branched C1-C16alkylene, —CH═CH—, —CH═CH—CH2—, C6-cycloalkylene, phenylene or naphthylene; and X, X1 and X2 are each independently of the others OH, Cl, OCH3 or OC2H5; are suitable as photoinitiators that can be incorporated in a formulation to be cured.
摘要翻译:式(I)的化合物,其中Y为例如C 3 -C 12亚烷基,亚丁烯基,亚丁炔基或C 4-14亚烷基, C 1 -C 12亚烷基被非连续的-O-或-NR 2 - 2间隔一次或多次; R 1是选自OH,SH,NR 3 R 4, - (CO)-OH, - (CO) - NH 2,SO 3 H,-C(R 5) - CR 6 R 7, /(CO)-NH-R 8 -NCO和-O-(CO)-R 9 - (CO)-X; R 2是氢,C 1 -C 4烷基或C 2 -C 4烷基或C 2 -C 4 - 羟基烷基; R 3和R 4分别独立地为氢,C 1 -C 4烷基或C 1 -C 4烷基, S 2 -C 4羟烷基; R 5,R 6和R 7各自独立地为氢或甲基; R 8是例如直链或支链C 4 -C 12亚烷基或亚苯基; R 9是例如直链支链C 1 -C 16亚烷基,-CH-CH-,-CH-CH-CH 3, 亚磺酰基,亚苯基或亚萘基; 和X,X 1和X 2各自独立地为OH,Cl,OCH 3或OC 2 SUB 5 H 5; 适合作为可引入待固化制剂中的光引发剂。
摘要:
The invention relates to novel photoinitators of formulae (V), (II), (III), (IV), (V) and (VI) wherein R1 and R2 are each independently of the other C1-C8alkyl; C1-C4alkyl substituted by OH, C1-C4alkoxy, —COO(C1-C8alkyl), (C1-C4alkyl)-COO—, —CN, benzyl, phenyl or by —N(R15)(R16); C3-C6alkerlyl, benzyl, —CH2—C6H4—(C1-C4alkyl) or phenyl; or R1 and R2 together are unbranched or branched C2-C9alkylene or C3-C6-oxa- or -azaalkylene; R3, R4, R5 and R6 are each independently of the others hydrogen, C1-C8alkyl, C3-C6alkenyl, benzyl, —CH2—C6H4—(C1-C4alkyl) or phenyl; R3 and R4 together and/or R5 and R6 together are unbranched or branched C2-C9alkylene; A is Cl, Br, —O—R9, —N(R11)(R12) or —S—R18, A′ is —O—, —NH— or —NR11—; A″ is Cl, Br, —O—R9, —N(R11)(R12) or —S—R18 or hydrogen, X is —O—R10 or —N(R13)(R14), n is an integer from 1 to 10, preferably an integer from 1 to 4, especially 1, 2 or 3; R7 is a linker; R8 is a bivalent C2-C3alkylele radical.
摘要:
A description is given of a process for the preparation of 2,5-bis(1,1-dimethyl-4-hexyloxycarbonylbutyl)hydroquinone by reacting 5-methyl-4-hexenoic acid (m)ethyl ester, which is obtainable by reacting 2-hydroxy-2-methyl-3-butene with tri(m)ethyl orthoacetate in the presence of an acid catalyst, with hydroquinone according to Friedel-Crafts, and transesterifying the resulting 2,5-bis(1,1-dimethyl-4-(m)ethoxycarbonylbutyl)-hydroquinone product direct with hexanol in a one-pot process.
摘要:
A process for the preparation of bis-acylphosphanes of formula R1P(COR )2 wherein R1 is unsubstituted phenyl or phenyl substituted by one to five halogen, C1-C8-alkyl, C1-C8-alkylthio and/or C1-C8-alkoxy; R2 is C1-C18-alkyl or C2-C18-alkenyl; C1-C18-alkyl or C2-C18-alkenyl substituted once or more than once by halogen —OR10, —OCO—R10, —OCO-Hal, —COO—R10, —N(R11)—CO—R10, —N(R11)—CO-Hal, —CO—NR11R10, —CH═CH—CO—OR10 or —CH═CH-phenyl; —C(C1-C4alkyl)=C(C1-C4alkyl)-CO—OR10 or —C(C1-C4alkyl)=(C1-C4alkyl)-phenyl; C5-C12cycloalkyl, C2-C18alkenyl, phenyl-C1-C4alkenyl, phenyl, naphthyl, biphenyl or a 5- or 6-membered -0-, S— or N-containing heterocyclic ring, the radicals phenyl, naphthyl, biphenyl or the 5- or 6-membered -0-, S— or N-containing heterocyclic ring being unsubstituted or substituted by one to five halogen, C1-C8alkyl, C1-C8alkoxy and/or C1-C8alkylthio; the process comprises the steps in a) selective reduction of dichlorophenylphosphanes of the formula R1P(Cl)2 by means of hydrogen at a temperature in the range from 20 to 200° C. and under hydrogen pressure of atmospheric pressure to 20 bar in the presence of a hydrogenation catalyst, a tert. aliphatic amine or an aromatic amine and in the presence of a non protic solvent which is unreactive under the hydrogenation conditions to obtain cyclic phenylphosphanes (R1P)n (n=4 to 6); or b) selective reduction of R1P(Cl)2 by means of hydrogen at a temperature in the range from 80 to 250° C. and under hydrogen pressure of 25 to 250 bar in the presence of a hydrogenation catalyst, a tert. aliphatic amine or an aromatic amine and in the presence of a non protic solvent which is unreactive under the hydrogenation conditions to obtain R1PH2; c) subsequent reaction with an acid halide of formula in the presence of an apropriate base R2COHal wherein R2 is as defined above.
摘要:
The Invention relates to novel ketones of formulae (I) and (II) wherein R1, R2, R3 and R4 are, for example, C1-C8alkyl, R5 is, for example, hydrogen, A is CI, Br, -0-R7, —NR8R9 or —S—R16, A′ is —O—, —NH— or —NR8—, X and Y are each independently of the other —O—R10 or —N(R11)(R12), n is an integer from 1 to 10, R6 is, for example, an n-valent radical of linear or branched C2-C20alkyl the carbon chain of which may be interrupted by cyclohexanediyl, phenylene, —CH(OH)—, —C(C2H5)(CH2—CH2—OH)—, —C(CH3)(CH2—CH2—OH)—, —C(CH2—CH2—OH)2—, —N(CH3)—, —N(C2H5)—, —N(CH2—CH2—OH)—, —CO—O—, —O—CO—, —P(CH2—CH2—OH)—, —P(O)(CH2—CH2—OH)—, -0-P(O—CH2—CH2—OH)—O—, -0-P(O)(0-CH2—CH2—OH)—O—, —O-cyclohexanediyl-C(CH3)2-Cyclohexanediyl-O—, —O-phenylene-C(CH3)2-phenylene-O—, —O-phenylene-CH2-phenylene-O—, —Si(CH3)2—, -0-Si(CH3)2—O—, —O—Si(CH3)(0-CH3)—O—, —Si(CH3)(R17)—O—Si(CH3)(R18)—, 5-(2-hydroxyethyl)-[1,3,5]triazinane-2,4,6-trione-1,3-diyl and/or by from one to nine oxygen atoms.