ethylene group

poly(phenylene-bisethynylene)-alt-((cyano-styryl)benzene) alternating copolymer containing electron donor and electron acceptor units was synthesized by cross-coupling polycondensation with Pd(PPh_3)_2Cl_2 and phase transfer catalysts.

利用钯催化剂Pd(PPh3)2Cl2和相转移催化剂PTC,采用Heck交叉偶联缩聚反应合成了(苯撑乙炔-氰基乙烯苯撑)共聚物(C12-PPE-DCNTB),比较了聚合物的紫外吸收光谱和荧光光谱特征及热稳定性。

During the test run of 2000 h,the conversion of acetal and the yield of ethyl vinyl ether maintained about 96.

研究了在固体催化剂上乙缩醛气相分解制乙烯基乙醚的反应性能。

The reaction of fluoroalkyl iodides with ethyl vinyl ether and amines in the presence of sodium dithionite was studied.

研究了在保险粉存在下,氟烷基碘(1)与乙烯基乙醚和伯胺或仲胺(2)的反应。

1,2-bis[bis(2-ethoxyethyl)phosphino] ethane(tetrofosmin) produced from the reaction of 1,2-bis(phosphino)-ethane with ethyl vinyl ether.

亚磷酸三乙酯与1,2二-溴乙烷的加成产物经L iA lH4还原得乙二膦,后者与乙烯基乙醚发生加成反应生成1,2双-[双(2乙-氧基乙基)膦基]乙烷(替曲膦),这是一种新型的心肌灌注显像剂99mT c替-曲膦的配体,产物及中间产物经IR、1H-NMR、M S得到确证。

The bimetallic Pd-D/Al_2O_3(D was(ⅥA) group element in pexiodic chart) selective hydrogenation catalyst for removing vinylacetylene(VAC) in cracked C_4 mixture was prepared by adopting fractional dip-molding and carring active constituent PdCl_2 and assistant D onto Al_2O_3.

0 h-1,H2/乙烯基乙炔(VAC,摩尔比)1。

After hydrogenation both ethylacetylene and vinylacetylene contents are reduced to below 1 0×10 -5 ,and 1,3 butadiene loss does not exceed 3

结果表明，Ｐｄ－Ｐｂ／Ａｌ２Ｏ３催化剂在一定工艺条件下可以将碳四馏份中的乙基乙炔和乙烯基乙炔分别除至１。

AM1 Studies of Two Pathways of Vinylacetylene React with Nitric Oxide;

利用半经验AM1方法，研究了乙烯基乙炔与一氧化氮反应生成丙炔腈（反应1）和丙烯腈（反应2）的两条竞争反应途径。