摘要:
[PROBLEMS] To provide an efficient process for producing an optically active chromene oxide compound which is an important intermediate for a benzopyran compound effective in the treatment of arrhythmia.[MEANS FOR SOLVING PROBLEMS] The process for producing an optically active chromene oxide compound comprises using an optically active titanium complex represented by, e.g., the formula (1) or (2) as a catalyst to asymmetrically oxidize an optically active chromene compound with high enantioselectivity in high chemical yield.
摘要:
[Problems] To provide an efficient process for producing an optically active chromene oxide compound which is an important intermediate for a benzopyran compound effective in the treatment of arrhythmia. [Means For Solving Problems] The process for producing an optically active chromene oxide compound comprises using an optically active titanium complex represented by, e.g., the formula (1) or (2) as a catalyst to asymmetrically oxidize an optically active chromene compound with high enantioselectivity in high chemical yield.
摘要:
Process for producing an oxirane compound includes treating with hydrogen peroxide in the presence of either an olefin oxidation catalyst prepared from an organic compound or a polymer compound of formula (1) a tungstic acid compound, a phosphoric acid, hydrogen peroxide and a quaternary ammonium salt of formula (2) or (3) or an olefin oxidation catalyst prepared from an organic compound or a polymer compound of formula (1), a tungsten compound and a quaternary ammonium salt of formula (2) or (3). The process is useful especially industrially.
摘要:
There is provided a process for producing oxirane compound comprising treating with hydrogen peroxide in the presence of either an olefin oxidation catalyst prepared from an organic compound or a polymer compound of formula (1) a tungstic acid compound, a phosphoric acid, hydrogen peroxide and a quaternary ammonium salt of formula (2) or (3) or an olefin oxidation catalyst prepared from an organic compound or a polymer compound of formula (1), a tungsten compound and a quaternary ammonium salt of formula (2) or (3). The process is useful especially industrially.
摘要:
Process for producing an oxirane compound includes treating with hydrogen peroxide in the presence of either an olefin oxidation catalyst prepared from an organic compound or a polymer compound of formula (1) a tungstic acid compound, a phosphoric acid, hydrogen peroxide and a quaternary ammonium salt of formula (2) or (3) or an olefin oxidation catalyst prepared from an organic compound or a polymer compound of formula (1), a tungsten compound and a quaternary ammonium salt of formula (2) or (3). The process is useful especially industrially.
摘要:
A signal processing unit of a radio communication section of a vehicle-mounted device mounted on a vehicle broadcasts first sets of data, each set of data including a vehicle speed and a traveling direction of the vehicle at a predetermined period when the vehicle changes the vehicle speed or the traveling direction. The signal processing unit broadcasts second sets of data including the current vehicle position, the vehicle speed, and the traveling direction of the vehicle at predetermined timing. When receiving the first data and the second data from a peripheral vehicle, the signal processing unit calculates a position of the peripheral vehicle in accordance with the first and second sets of data.
摘要:
A terminal device that is virtually connected to an external information processing device that includes a recording medium that stores content so that the terminal device can communicate with the information processing device includes an input unit for receiving a user's instruction, a display unit that presents information on a screen, an information storage unit that stores content, and a control unit that is connected to the input unit, the display unit, and the information storage unit. The control unit creates a deletion history when a piece of content stored in the information storage unit is deleted, and displays the deletion history on the screen of the display unit and requests the information processing device to transfer a deleted piece of content that has been selected from the deletion history when a user's instruction has been received via the input unit.
摘要:
A navigation apparatus and a driving direction guiding method are capable of clearly indicating a correct direction in which a vehicle should be driven at an exit when the vehicle exits a parking area through the exit. When a position measurement unit detects that the vehicle has entered a parking area based on measured position information, a CPU clearly indicates, on a display, a correct direction in which the vehicle should be driven at an exit of the parking area so that a user can know in advance the correct direction in which to drive his/her vehicle after passing through the exit of the parking area.
摘要:
A surrounding image generating apparatus changes a viewpoint of images around a vehicle, taken by multiple image pickup devices mounted at different positions along the vehicle, to generate a surrounding image of the areas around the vehicle viewed from a virtual viewpoint located above the vehicle. The surrounding image generating apparatus includes a metering area determining unit determining at least one overlapping area in which the shooting areas of the image pickup devices are overlapped with each other to be a metering area for at least part of the image pickup devices; an exposure calculating unit focusing metering on the metering area for the at least part of the image pickup devices to calculate an appropriate exposure of each of the image pickup devices; and a surrounding image generating unit generating the surrounding image by using image signals generated in accordance with the calculated exposures.
摘要:
A wireless communication device and a wireless communication method are provided to reduce the wasting of a battery by shortening a time-out interval defined when power is supplied from a battery to perform communication. The wireless communication device is adapted to make a request for predetermined information when the information is not received from the other party of communication before a set time Ts has elapsed, and to terminate the communication if the information is not received even after a set number of requests. The wireless communication device includes a wireless communication unit for wirelessly communicating with an external device, a power supply source detector for detecting whether electric power is supplied from a power source other than the battery, or from the battery, and a communication processor for setting a time-out interval defined by the set time and the set number when power is supplied from the battery to be shorter than a time-out interval defined when power is supplied from a power source other than the battery.
摘要翻译:提供了一种无线通信装置和无线通信方法,通过缩短从电池供电进行通信所限定的超时间隔来减少电池的浪费。 无线通信装置适用于在经过设定时间T S S之前没有从通信对方接收到信息的情况下进行预定信息的请求,并且如果信息是 即使在一定数量的请求后也不会收到。 无线通信装置包括:与外部设备无线通信的无线通信单元,检测从电池以外的电力供给电力的电源检测器,还是来自电池的通信处理器, 当从电池供电时,由设定时间和设定号定义的超时间隔短于从电池供电以外的电源供电时定义的超时间隔。