摘要:
A process for converting a multihydroxylated-aliphatic hydrocarbon or ester thereof to a chlorohydrin, by contacting the multihydroxylated-aliphatic hydrocarbon or ester thereof starting material with a source of a superatmospheric partial pressure of hydrogen chloride for a sufficient time and at a sufficient temperature, and wherein such contracting step is carried out without substantial removal of water, to produce the desired chlorohydrin product; wherein the desired product or products can be made in high yield without substantial formation of undesired overchlorinated byproducts. In addition, certain catalysts of the present invention may be used in the present process at superatmospheric, atmospheric and subatmospheric pressure conditions with improved results.
摘要:
To provide a polymerizable group-containing and fluorine-containing adamantane derivative capable of affording a cured product having good heat resistance, good mechanical properties such as mar resistance and a low refractive index, a resin composition containing such a polymerizable group-containing adamantane derivative, and a fluorine-containing adamantane derivative which is useful as a reaction intermediate used for the production of the polymerizable group-containing and fluorine-containing adamantane derivative. Specifically provided are a fluorine-containing adamantane derivative represented by the general formula (I) below, a polymerizable group-containing and fluorine-containing adamantane derivative represented by the general formula (II) below, and a resin composition containing such a polymerizable group-containing and fluorine-containing adamantane derivative. In the formula, R 1 and R 2 are each a hydrogen atom, for example, n is an integer of 0 or more, X 1 is a polymerizable group represented by the formula (III-a), for example, Y is a hydrogen atom, for example, s and t are each an integer of 1 to 15, and u is an integer of 0 to 14, with the proviso that s + t + u = 16.
摘要翻译:提供和含氟金刚烷衍生物能够得到具有良好耐热性的固化物的含有聚合性基团的,良好的机械性能:如耐擦伤性和低折射率,含寻求含聚合性基团的金刚烷衍生物的树脂组合物, 和含氟金刚烷衍生物所有作为中间体的反应用于生产含聚合性基团的含氟金刚烷衍生物的,这是有用。 下面具体地提供了由通式(I)表示的含氟金刚烷衍生物,含有聚合性基团和由下面的通式(II)表示的含氟金刚烷衍生物,和树脂组合物包含寻求可聚合基团 - 含有氟和含金刚烷衍生物。 氢在该式中,R 1和R 2各自为氢原子,对于实施例中,n是0以上的整数,X 1是由式(III-A)表示的聚合性基团,例如,Y是 核,例如,s和t各自为1至15的整数,u是0〜14的整数,前提条件做S + T + U = 16
摘要:
A process for preparing oxiranemethane derivatives which are useful as intermediates for preparing aspartyl protease inhibitors comprising the steps of activating an aminodiol, acylating the aminodiol and reacting the acylated aminodiol with a base to form an epoxy compound.
摘要:
A process by which an optically active epoxy alcohol derivative useful as an intermediate for medicines can be easily and industrially safely produced from an inexpensively available material; and a halohydrin derivative which is an important novel intermediate therefor. Also provided is a process for producing an intermediate for triazole type antifungal agents through a small number of steps, which comprises reacting the halohydrin derivative with a triazolesulfonamide. An optically active, substituted propionic ester derivative is reacted with a haloacetic acid derivative in the presence of a base to obtain an optically active haloketone derivative and this derivative is reacted with an arylmetal compound to stereoselectively obtain a halohydrin derivative. This halohydrin derivative is subjected to elimination of the substituent present on the hydroxy group and to epoxidation with a base to produce an optically active epoxy alcohol derivative.
摘要:
The present invention relates to a process for converting a multihydroxylated-aliphatic hydrocarbon or ester thereof to a chlorohydrin, by contacting the multihydroxylated-aliphatic hydrocarbon or ester thereof starting material with a source of a superatmospheric partial pressure of hydrogen chloride for a sufficient time and at a sufficient temperature, and wherein such contracting step is carried out without substantial removal of water, to produce the desired chlorohydrin product; wherein the desired product or products can be made in high yield without substantial formation of undesired overchlorinated byproducts. In addition, certain catalysts of the present invention may be used in the present process at superatmospheric, atmospheric and subatmospheric pressure conditions with improved results.
摘要:
The present invention provides an industrially safe, easily operable process for producing an optically active epoxy alcohol derivative useful as an intermediate for pharmaceuticals from inexpensively available materials, and also provides a novel halohydrin derivative serving as an important intermediate for the epoxyalcohol derivative. Furthermore, the present invention provides a process for producing an intermediate for a triazole antifungal agent by allowing a halohydrin to react with a triazole sulfonamide, the process including a small number of steps. A process for producing an optically active epoxy alcohol derivative includes allowing an optically active α-substituted propionate derivative to react with a haloacetic acid derivative in the presence of a base to prepare an optically active haloketone derivative, allowing the resulting haloketone derivative to react with an aryl metal compound to stereoselectively prepare a halohydrin derivative, eliminating a substituent for the hydroxy group of the halohydrin derivative, and performing epoxidation with a base. Furthermore, a process for producing an intermediate for a triazole antifungal agent includes allowing a halohydrin derivative to react with a triazole sulfonamide, the process including a small number of steps.
摘要:
The invention concerns a process for the production of optically active epoxides useful as pharmaceutical intermediates, particularly in the field of HIV protease inhibitors. The optically active epoxides are produced in commercially acceptable yields from an optically active alcohols by a Mitsunobu reaction and a cyclisation step, preferably comprising an intermediate recrystallisation step. The stereochemistry of the alcohol is inverted during the Mitsunobu reaction to produce the desired epoxide.