摘要:
The invention provides a compound having a heterocyclic skeleton of formula (I): wherein the indicated moieties are as described in the specification, as well as a tautomer thereof or a salt thereof. The compound is useful as a catalyst for an asymmetric synthesis.
摘要:
A method for producing a β-nitrostyrene compound is provided in which a benzaldehyde derivative represented by the following formula (I): and nitromethane are condensed in an acetic acid solvent in the presence of a primary amine. This method allows production of a β-nitrostyrene compound at a high yield in the industrially-safe reaction temperature range.
摘要:
An electric compressor is provided with a hermetic terminal wherein the number of components and the number of steps and amount of time required for assembling the hermetic terminal and for machining the components are reduced, to thereby improve production efficiency. The hermetic terminal (41) is located in a through hole (2c) provided to a motor housing (2). A terminal main body (42) of the hermetic terminal (41) is provided with a flange portion (42b) located inside the motor housing (2) to prevent the hermetic terminal (41) from falling off to outside through the through hole (2c). Moreover, movement of the hermetic terminal (41) to an inner side of the motor housing (2) is restricted by a shaft supporting member (21) which faces thereto through a cluster block (44) interposed therebetween.
摘要:
Synchronization between command and address signals commonly coupled to a plurality of memory devices to be operated in parallel and a clock signal coupled to the memory devices is achieved, while suppressing an increase in the clock wiring length. A semiconductor device has a data processing device mounted on a wiring substrate and a plurality of memory devices accessed in parallel by the data processing device. The data processing device outputs the command and address signals as a first frequency from command and address terminals, and outputs a clock signal as a second frequency from a clock terminal. The second frequency is set to multiple times of the first frequency, and an output timing equal to or earlier than a cycle starting phase of the clock signal output from the clock terminal can be selected to the command and address signals output from the command and address terminals.
摘要:
The present invention relates to a production method of optically active hydrazine compound (IV), which includes reacting azo compound (II) with compound (III) in the presence of optically active compound (I). The present invention also relates to a production method of optically active amine compound (V), which includes producing optically active hydrazine compound (IV) by the above-mentioned method, reacting the optically active hydrazine compound (IV) with a base or an acid to eliminate a protecting group represented by PG, and then subjecting the resulting compound to catalytic reduction or reacting the resulting compound with a zinc powder to reduce a nitrogen-nitrogen bond. wherein X is S or O; C*, C** and C*** are asymmetric carbons, R1 and R2 are lower alkyl groups etc., R4 and R5 may in combination form cyclohexane etc., R3 is aryl group optionally having substituent(s) etc., R6 and R7 are hydrogen atoms etc., R8 is aryl group optionally having substituent(s) etc., R9 and R10 are electron withdrawing groups, and PG is a protecting group.
摘要:
An optical disk comprising a first substrate, a first reflective layer for reflecting laser beams for information reading formed on the first substrate, and a resin layer made of a cured film of an ultraviolet curable composition formed on the first reflective layer, wherein the first reflective layer is a reflective layer made of silver or an alloy containing silver as a main component, and the ultraviolet curable composition contains (a) a radical polymerizable compound, (b) a compound represented by the following formula (1) and (c) a radical photopolymerization initiator.
摘要:
There are provided a method for selection of a substance which is capable of controlling activation of prorenin where an adjusting ability of the activation of prorenin by protein-protein interaction in a profragment region of prorenin as indicator is used; a prorenin activation controlling substance having a function of controlling the activation of prorenin based on protein-protein interaction by a profragment region of prorenin; and hypotensor, organ hypertrophy suppressor and arterial thickening suppressor containing the prorenin activation controlling substance as an effective ingredient.
摘要:
A semiconductor device includes an IC chip, a frame on which the IC chip is mounted, a conductive plate disposed beneath and spaced from the frame, a first external terminal and a second external terminal that electrically connect the IC chip, the frame, and the conductive plate, and a molding compound covering and encapsulating the IC chip, the frame, and the conductive plate.
摘要:
A primary lid is set in a top opening of a vessel body that contains radioactive substance, and closes the top opening. The peripheral edge portion of the primary lid is welded to the inner peripheral surface of the vessel body. As the primary lid is welded, steam in the vessel body is discharged to the outside through a discharge hole in the primary lid, and a shield gas is filled into or run through a space in the outer peripheral portion of the primary lid, so as to prevent the steam from flowing into the welding portion.
摘要:
The present invention provides an aluminum composite material having neutron absorbing power that improves the ability to absorb neutrons by increasing the content of B, while also being superior to materials of the prior art in terms of mechanical properties and workability. The aluminum composite material having neutron absorbing power contains in Al or an Al alloy matrix phase B or a B compound having neutron absorbing power in an amount such that the proportion of B is 1.5% by weight or more to 9% by weight or less, and the aluminum composite material has been pressure sintered.