Analogous complexes 3a" and 4a"= CpRu(PPh32, Ar = para-C6H4OMe containing methoxy group at the para-position of gem-diphenyl group were similarly obtained from protonation of the corresponding acetylide complexes via formation of vinylidene intermediate. But only complex 3a'= CpRu(PPh32, Ar2 = fluorenyl is stable in solution, and decomposed to unidentified complex when heated to reflux in THF. Deprotonation of complex 4a in the presence of base gives neutral acetylide complex 6a.

在兩個相鄰位置的苯基對位位置上接有一甲氧基的衍生物3a"和4a"也可利用類似的質(zhì)子化反應(yīng)合成，唯有錯合物3a'= CpRu(PPh32国产高清激情无码， Ar2 = fluorenyl 可以穩(wěn)定於溶液中免费的羞羞视频在线播放，不會進(jìn)行上述反應(yīng)，如將其溶於四氫呋喃溶液加熱至沸騰則會分解產(chǎn)生無法鑒定的化合物看外国免费免下载男女人与抽黄色视频。

Benzene nitriles studied included parent benzene nitriles(cinnamonitrile,benzo nitrile,benzeneacetonitrile,isopropyl benzeneacetonitrile) and para-chloro ben zene nitriles(para-chloro cinnamonitrile,para-chloro benzonitrile,para-chloro be nzeneacetonitrile,para-chloroisopropyl benzeneacetonitrile).

所研究的苯腈類化合物包括苯腈類母體化合物(苯丙烯腈91免费久久精品、苯甲腈、苯乙腈无码A片在线免费看片、異丙基苯乙腈)和對氯苯腈類化合物(對氯苯丙烯腈亚洲一级黄色视频一二区、對氯苯甲腈、對氯苯乙腈一区二区一级黄色视频、對氯異丙基苯乙腈)欧美多毛XXXXX性喷潮6。

The leading products of our Company are para cresol, with an annual output of 8,000 tons; food additives, such as potassium sorbate and sorbic acid, with an annual output of sorbic acid and potassium sorbate 10,000 tons, which occupied in the domestic market; Meanwhile, exported to Europe, the United States, Japan, South Korea and other countries and regions, whose volume accounts for 60% of the total, which has made it an important export-oriented enterprises of Dezhou Area, and also, has become the world's production base of para cresol and an important production base of sorbic acid and potassium sorbate domestically .

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Test and analysis show that, the distribution patterns of the tangent veloctiy fields in the big cone area and the small cone area, which are comprised of para-free vortex and para-forced vortex, are basically identical without a change of the radius of the boundary surface; with the increase of the angle of the small cone, the para-free vortex area decreases and the para-forced vortex area increases, and the emulsifiability of the fluid drips increases with the increase of velocity gradient; the tangent velocity increases with the increase of inlet flow, and the maximum tangent velocities of both the big cone area and the small cone area are 4.94 times of the inlet flow; and the maximum tangent velocity increases with the increase of the split ratio and with the radius of the boundary surface not changed.

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The leucogranites veins occurred widespreadly in the para-metamorphic rocks, in which the hypersthene melagranulite distributed. That suggests the source rocks of leucogranites of the High Himalaya are para-metamorphic rocks. For the basement was uplifting, pressure relieved and lacked water, source rocks were melting partly and formed the leucogranite magma.

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In experimental research, the S-L-E of three groups of isomers was determined by using differential scanning calorimetry , and more than two hundred reliable data were obtained. The isomers include meta-, ortho-, and paradichlorobenzene, meta-, ortho-, and para-dibromobenzene and meta-, ortho-, and para-nitro-benzoic acid.

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OrthoSubstituted phenols gave the para-para-coupling products and para-substituted phenols gave the ortho-ortho-coupling ones, while hindered phenol gave the corresponding oxidative coupling product.

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