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Liu Guobin, Zhang Youqiu, Li Yuanqiang: Method for synthesizing 1-(halogen alkoxyl)-2-alkoxyl-5-nitrobenzene compounds. Shanghai Ruizhi Chemical Study, xueqi, June 11, 2008: CN200610119369

The invention relates to a method for synthesizing 1-(haloalkoxy)-2-alkoxy-5-nitrobenzene compound and the procedures are that 2-alkoxy-5-nitrophenol or salt compound, haloparaffin compound and phase transfer catalyst are charged in the alkaline material solution to react under the temperature of 20 ...


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Liu Guobin, Li Yuanqiang, Zhang Youqiu: Preparation method of 5-nitro-2,4-bihalogenated phenols compounds. Shanghai ChemPartner, Xue Qi, March 11, 2009: CN200710045695

The invention discloses a method for preparing a 5-nitryl-2, 4-dihalogeno-benzene phenol compound, which comprises the following steps: 2, 4-dihalogeno-benzene phenol carboxylic ether or sulphonic acid ester compound is reacted with nitric acid with 1 to 10 times molar weight and over 90 percent mas ...


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Ren Shimao, Zhang Youqiu, Song Rong& 39, An: Nutritious vermicelli and jelly of spitulina and their production process. Zhang Youqiu, jiang meng, March 28, 2001: CN99112438

The spirulina nutrient vermicelli and sheet jelly are made up by using (wt%) 80-95% of starch and 0.5-15% of spirulina powder as raw material through the processes of mixing them, adding water to make them into paste-like maxture, extrusion-forming by means of extruding machine, drying to obtain sem ...


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Zhang Youqiu: Flying wing with tongue plate and its spray type air cushion. Zhang Youqiu, December 28, 1988: CN88101826

The present invention provides a device for sports and recreation. The flying wings are fitted on people's two arms so as to make people hovering in the air by means of manpower and the auxiliary thrust of a jet type air cushion. The flying wing utilizes unidirectional air-current choke principle. U ...


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Zhang Youqiu: Swingable flying wing with tongue-like plate and its complete set equipment-jet cushion. Zhang Youqiu, February 24, 1988: CN87103408

The present invention relates to a tool for physical culture and entertainment. The invention is characteristered by that the flying wing is set on two arms of a man and the man may fly in the sky by means of man power and the auxiliary force generated by air cushion. The flying wing is based on the ...


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Liu Guobin, Zhang Youqiu: Method for preparing trifluoromethyl styrene compound. Shanghai Chemexplorer Shanghai Chempartner, Xue Qi, Zhu Shuibeng, July 21, 2010: CN200910045553

The invention discloses a method for preparing a trifluoromethyl styrene compound II, which comprises the step of preparing the compound II from a compound I under the action of a dihydric phosphate dehydrating agent in a solvent or under the solvent-free condition, wherein R1 and R2 are respectivel ...


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Liu Guobin, Zhang Youqiu: Method for preparing trifluoromethyl styrene compound. Shanghai Chemexplorer Shanghai Chempartner, Xue Qi, Zhu Shuibeng, July 21, 2010: CN200910045554

The invention discloses a method for preparing a trifluoromethyl styrene compound II, which comprises the step of under the solvent-free condition or in a solvent, carrying out dehydration on a compound I under the action of a montmorillonite dehydrating agent to prepare the compound II, wherein R1 ...



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