摘要:
A novel 4-cyanopiperidine derivative, which is represented by the following general formula (I): ##STR1## wherein X means a halogen atom, or an acid addition salt thereof, is prepared by reacting N-(2-hydroxyethyl)-4-carbamoylpiperidine or an acid addition salt thereof with a dehydrating and halogenating agent; or by reacting 4-cyanopiperidine or a salt thereof with a compound represented by the following general formula (IV):X--CH.sub.2 CH.sub.2 --Y (IV)wherein X has the same meaning as defined above and Y denotes the same halogen atom as X or another halogen atom. The derivative is useful as intermediate for synthesis of quinuclidine derivative which is in turn useful as intermediate for the production of medicines, chemicals, etc.
摘要:
Compounds having potent antimicrobial effects over Gram-positive bacteria and Gram-negative bacteria, a high stability to .beta.-lactamases and DHP-I and a high safety for the human body and a process for producing the same. Carbapenem compounds represented by the following general formula (I) or salts thereof: ##STR1## wherein the ring A represents a 3- to 7-membered non-aromatic ring containing at least one nitrogen atom and optionally having a substituent other than R.sup.6 ; R.sup.1 represents hydrogen or methyl; R.sup.2 and R.sup.5 are the same or different and each represents hydrogen or a protecting group of the hydroxyl group; R.sup.3 represents hydrogen or a protecting group of the carboxyl group; R.sup.4 represents hydrogen, lower alkyl or a protecting group of the amino group; R.sup.6 represents: (1) hydrogen, (2) lower alkyl, optionally substituted by an optionally protected hydroxy, carbamoyl, formimidoyl, acetimidoyl or ##STR2## wherein R.sup.7 and R.sup.8 are the same or different and each represents hydrogen, lower alkyl, or a protecting group of the amino group), or (3) a protecting group of the amino group or a protecting group of the imino group; and m is 0 or 1. These compounds have antimicrobial effects and are useful as a drug.
摘要:
The present invention provides a metal powder composed of tantalum or niobium that achieves both sinterability and fluidity and the manufacturing method thereof. The present invention also provides a tantalum or niobium powder that enables the manufacturing of an anode for a solid electrolytic capacitor in which holes are formed for a conductive polymer-containing solution to pass through, without using a hole molding material or pore forming material. Furthermore, the present invention provides an anode for a solid electrolytic capacitor that enables the manufacturing of a high-volume and low ESR solid electrolytic capacitor. The present invention further provides a manufacturing method of a metal powder that allows the manufacturing of a metal powder of a given diameter range from a raw powder at high yield, without requiring a lot of work and time.
摘要:
A method of production of blast furnace coke comprising drying mixed coal, then, or simultaneously with the drying, classifying it to fine-grained coal and coarse-grained coal, then adding to the fine-grained coal at a temperature of 80 to 350° C. a caking additive comprised of one or more of a heavy distillate of tar, soft pitch, and petroleum pitch, agglomerating it by hot pressing, then mixing the clumps of coal and the coarse-grained coal and charging and carbonizing the mixture in a coke oven.
摘要:
The present invention provides an efficient stereoselective method for manufacturing (2S,4S)-2-[[(R)-hydroxy-(3R)-cyclic amine-3-yl]methyl]pyrrolidine-4-thiol or a salt thereof which is useful as an intermediate for the manufacture of carbapenem and also provides the intermediate. A method for manufacturing which comprises the step of reacting a compound of the formula (I): (wherein, R1 is a lower alkylsulfonyl group, an optionally substituted arylsulfonyl group or an alkylsilyl group; and R2 is a protecting group for an amino group) with a compound of the formula (II): (wherein, R3 is a substituted or unsubstituted lower alkyl group or aryl group; X is an oxygen atom or a sulfur atom; Y is an azide group or a nitro group; and m is an integer of 2 to 5).
摘要:
The present invention provides an efficient stereoselective method for manufacturing (2S,4S)-2-[[(R)-hydroxy-(3R)-cyclic amine-3-yl]methyl]pyrrolidine-4-thiol or a salt thereof which is useful as an intermediate for the manufacture of carbapenem and also provides the intermediate. A method for manufacturing which comprises the step of reacting a compound of the formula (I): (wherein, R1 is a lower alkylsulfonyl group, an optionally substituted arylsulfonyl group or an alkylsilyl group; and R2 is a protecting group for an amino group) with a compound of the formula (II): (wherein, R3 is a substituted or unsubstituted lower alkyl group or aryl group; X is an oxygen atom or a sulfur atom; Y is an azide group or a nitro group; and m is an integer of 2 to 5).
摘要:
The invention provides a means to prepare a highly water-resistant printed material by the ink-jet printing method despite the water-solubility of the dye in the aqueous ink used in the ink-jet printing method. The inventive method comprises: overcoating the surface of the sheet material, which has a water-absorptive surface layer with receptivity of the aqueous ink and printed by the ink-jet printing method, with a curable polyisocyanate compound and bringing the overcoating layer under a condition capable of curing the polyisocyanate compound.
摘要:
The invention provides a means to prepare a highly water-resistant printed material by the ink-jet printing method despite the water-solubility of the dye in the aqueous ink used in the ink-jet printing method. The inventive method comprises: overcoating the surface of the sheet material, which has a water-absorptive surface layer with receptivity of the aqueous ink and printed by the ink-jet printing method, with a curable polyisocyanate compound and bringing the overcoating layer under a condition capable of curing the polyisocyanate compound.
摘要:
The present invention provides a metal powder composed of tantalum or niobium that achieves both sinterability and fluidity and the manufacturing method thereof. The present invention also provides a tantalum or niobium powder that enables the manufacturing of an anode for a solid electrolytic capacitor in which holes are formed for a conductive polymer-containing solution to pass through, without using a hole molding material or pore forming material. Furthermore, the present invention provides an anode for a solid electrolytic capacitor that enables the manufacturing of a high-volume and low ESR solid electrolytic capacitor. The present invention further provides a manufacturing method of a metal powder that allows the manufacturing of a metal powder of a given diameter range from a raw powder at high yield, without requiring a lot of work and time.
摘要:
A method of production of blast furnace coke comprising drying mixed coal, then, or simultaneously with the drying, classifying it to fine-grained coal and coarse-grained coal, then adding to the fine-grained coal at a temperature of 80 to 350° C. a caking additive comprised of one or more of a heavy distillate of tar, soft pitch, and petroleum pitch, agglomerating it by hot pressing, then mixing the clumps of coal and the coarse-grained coal and charging and carbonizing the mixture in a coke oven.