摘要:
A moisture-permeable waterproof coating is formed by coating a fabric with a water-based coating composition containing a film forming polymer and a water-soluble polymer in a proportion of 5 to 70% based on total solids, drying or heating the fabric to form a film thereon; and then treating the resulting film with an aqueous solution of an enzyme which selectively degrades the water-soluble polymer, thereby enzymatically degrading the water-soluble polymer and extracting the degraded water soluble polymer from the film, whereby the film on the fabric is rendered microporous.
摘要:
A one-dimensional coordination polymer having a linear structure and represented by general formula (I) given below: where M denotes copper or nickel, X denotes a halogen atom, R denotes a pyrazine derivative represented by general formula (II) given below, and n is an integer: where each of Z1 and Z2, which may be the same or different, denotes an atomic group required for forming a carbon ring by joining with a methylene chain the carbon atoms in the 2-position and 3-position or the carbon atoms in the 5-position and 6-position of the pyrazine ring, and * denotes the binding position with M included in general formula (I).
摘要:
Provided is a method for producing a 2-alkenylamine compound efficiently and at low cost, using a primary or secondary amine compound and a 2-alkenyl compound as the starting materials therefor. The 2-alkenyleamine compound is produced by 2-alkenylating a primary or secondary amine compound, using a specified 2-alkenylating agent and in the presence of a catalyst comprising a complexing agent and a transition metal precursor stabilized by a monovalent anionic five-membered conjugated diene.
摘要:
Provided is a method for producing a 2-alkenylamine compound efficiently and at low cost, using a primary or secondary amine compound and a 2-alkenyl compound as the starting materials therefor. The 2-alkenylamine compound is produced by adding Bronsted acid when 2-alkenylating by reacting the primary or secondary amine compound with the 2-alkenyl compound, and 2-alkenylating in the presence of a catalyst comprising a complexing agent and a transition metal precursor stabilized by a monovalent anionic five-membered conjugated diene.
摘要:
An air breather structure for an automatic transmission. The structure includes a transmission case housing a power train accommodating a plurality of friction engagement devices, and an extension case housing a rotational member. The extension case and the transmission case are united with each other to constitute an automatic transmission housing. A breather chamber is located upside the automatic transmission housing in a state where the automatic transmission is mounted in a vehicle, and formed with an air vent for communication with outside air. An end wall is provided for partitioning the transmission case and the extension case therebetween to define a transmission case-side space and an extension case-side space. In this structure, the automatic transmission housing is formed with a transmission case-side communication passage through which the breather chamber communicates with the transmission case-side space, and an extension case-side communication passage through which the breather chamber communicates with the transmission case-side space.
摘要:
Provided is a method for producing a 2-alkenylamine compound efficiently and at low cost, using a primary or secondary amine compound and a 2-alkenyl compound as the starting materials therefor. The 2-alkenylamine compound is produced by adding Bronsted acid when 2-alkenylating by reacting the primary or secondary amine compound with the 2-alkenyl compound, and 2-alkenylating in the presence of a catalyst comprising a complexing agent and a transition metal precursor stabilized by a monovalent anionic five-membered conjugated diene.
摘要:
The evacuation and inert gas introduction apparatus capable of quickly switching over between the evacuation state and the inert gas introduction state, is provided for a synthesizing device for molecular asymmetrical catalysts. The evacuation line is connected to a vacuum pump via a cock and solvent trap. The inert gas introduction line is connected to an argon gas cylinder via a cock. The vacuum cavity is provided at a tip end of the housing of the three-way cock, and thus the inside plug is attracted towards the vacuum cavity. The evacuation line is connected to the first port of the three-way cock, the inert gas introduction line is connected to the second port and the each reaction chamber of the synthesizing apparatus is connected to the third port. As the rotation angle of the inside plug is changed, the connection state of the line is switched.
摘要:
Disclosed is a method of producing an optically active &bgr;-hydroxy sulfonic acid compound comprising hydrogenating a &bgr;-keto sulfonic acid compound represented by formula 1: where R1 represents an alkyl or a phenyl group, which may be substituted, and R2 represents sodium or an alkyl group, in an acidic solvent, in the presence of an asymmetric catalyst comprising a complex of bivalent Ru, having 2,2′-bis(diphenylphosphino)-1,1′-binaphthyl as a ligand, to produce a compound represented by formula 2: where R1 and R2 are as defined above, and * designates an asymmetric carbon atom.
摘要:
Disclosed herein is a process for producing an optically active hydroxyalkylphosphonate represented by the formula (4), which comprises asymmetrically hydrogenating an oxoalkylphosphonate represented by the formula (1) using, as a catalyst, a ruthenium-optically active phosphine complex represented by the formula (2). ##STR1##
摘要:
A process for preparing an N-acyltetrahydroisoquinoline represented by formula (II) ##STR1## wherein A represents a phenylene ring substituted with a hydroxyl group, a lower alkoxy group, an acetoxy group, or a benzyloxy group; R represents a hydrogen atom, a lower alkyl group, or a phenyl group; and X represents a hydrogen atoms, a phenyl group, or a phenyl group substituted with a hydroxyl group, a lower alkoxy group, or an acetoxy group, which comprises asymmetrically hydrogenating an N-acyl-1-methylenetetrahydroisoquinoline or N-acyl-1-benzylidenetetrahydroisoquinoline represented by formula (I) ##STR2## wherein A, R, and X are as defined above, in the presence of an optically active ruthenium-phosphine complex as a catalyst. The process exclusively and efficiently provides a useful isomer of the N-acyltetrahydroisoquinoline of high purity which is useful as an intermediate for synthesizing isoquinoline type alkaloids as pharmaceuticals without involving optical resolution of a racemate.