It was found that this polymeric arsine palladium(0) complex is a highly active and stereoselective catalyst for arylation of styrene or acrylic acid.

通過(guò)用水合肼對(duì)上述聚硅氧烷負(fù)載的單齒胂鈀配合物進(jìn)行還原制備了聚硅氧烷負(fù)載的單齒胂鈀(0)配合物操逼黄色大片，研究表明它是苯乙烯com超碰、丙烯酸芳基化反應(yīng)的高活性和高立體選擇性的催化劑。

The catalytic performance for the Heck reactions of various substituted aryl halides with acrylic acid or styrene was studied.

研究了該催化劑對(duì)各種取代鹵代苯與丙烯酸亚洲黄色视频一区入口、苯乙烯的Heck芳基化反應(yīng)催化性能新疆女人啪啪毛片。

Aminobenzoic acid was used to synthesize 4'-methyl-2-cyanobiphenyl, which was one of medicine intermediates, by diazotization, acylation, substitution, and dehydration.

以鄰氨基苯甲酸為起始原料，經(jīng)重氮化最黄的网站、芳基化免费非常黄的网站91AⅤ、取代和脫水等步驟合成藥物中間體4'-甲基－2-腈基聯(lián)苯。

For the α-arylation of ethyl acetoacetate, the product was α-aryl ethyl acetoacetates, rather than ethyl a-arylacetates which are the major products in other catalytic systems.

較為惰性的氯代芳烴在Pd2/L1的催化下99久久99久久精品免费看子伦，也能夠跟1美女视频黄a免费久久，3-二羰基化合物發(fā)生α-芳基化反應(yīng)。

Bulky and electron-rich MOP-type phosphine ligand 2-ditertbutylphosphino-2'-isopropyloxy- 1,1'-binaphthyl (L1) shows good catalytic activity in palladium-catalyzed α-arylation of 1,3-dicarbonyl compounds.

富電子天天狠天天透天干天天怕∴、大位阻MOP型烷基膦配體2-二叔丁基膦-2'-異丙氧基-1日韩在线观看黄A片免费视频，1'-聯(lián)萘(L1)在鈀催化的1，3-二羰基化合物的α-芳基化反應(yīng)中顯示了較好的催化活性亚洲國產綜合无码一区二区。

Bulky and electron-rich MOP-type phosphine ligand 2-ditertbutylphosphino-2 -isopropyloxy 1,1 -binaphthyl (L1) shows good catalytic activity in palladium-catalyzed α-arylation of 1,3-dicarbony compounds.

富電子豆奶app下载进入ios、大位阻MOP型烷基膦配體2-二叔丁基膦－2'-異丙氧基－1，1'-聯(lián)萘(L1)在鈀催化的1亚洲中字乱伦一区二区，3-二羰基化合物的α-芳基化反應(yīng)中顯示了較好的催化活性亚洲欧美日韩一区二区在线。

The arylation showed high regioselectivity and only occurred on the less sterically hinderd ortho-C—H bond. The reaction could be compatible to diverse functional groups such as CH3, CH3O, and CH3CO, as well as Br and Cl substituents, which would permit to be functionalized further to construct new compounds with more complicated structures.

實(shí)驗(yàn)結(jié)果表明，反應(yīng)表現(xiàn)出明顯的區(qū)域選擇性日韩系列在线精品视频观看，芳基化只發(fā)生在空間位阻較小的sp2 C—H鍵上www黄片com，反應(yīng)可以采用多種取代基(如CH3O， CH3CO久久精品亚洲精品无码白， Br和Cl)進(jìn)行污污视频啊啊快操我高潮了鸡巴好硬，這有助于通過(guò)進(jìn)一步反應(yīng)構(gòu)建更為復(fù)雜的新化合物。

For the α-arylation of ethyl acetoacetate, the product was α-aryl ethyl acetoacetates, rather than ethyl α-arylacetates which are the major products in other catalytic systems.

較為惰性的氯代芳烴在Pd2/L1的催化下日本视频网站黄色，也能夠跟1成年人免费视频a片，3-二羰基化合物發(fā)生α-芳基化反應(yīng)。

Base played a crucial role in this reaction: in the Pd2/L1 catalyzed α-arylation of ethyl malonate, K3PO4 is the base of choice; in the α-arylation of ethyl acetoacetate, K2CO3 is the most effective base.

在這類(lèi)催化反應(yīng)中色偷偷色偷偷少妇水真多，堿的選擇具有重要的影響：以K3PO4為堿一级做a爰片久久毛片A片手机， Pd2/L1催化體系在丙二酸二乙酯的α-芳基化中，富電子溴代芳烴顯示較好的活性； Pd2/L1催化的乙酰乙酸乙酯α-芳基化時(shí)欧美一级黄色日批，以 K2CO3為堿婷婷丁香在线，催化體系顯示較好的活性，這個(gè)催化體系可控制反應(yīng)得到α-芳基乙酰乙酸乙酯一级毛片AA片免费视频在线播放，而不是脫乙跖访兰ば耘访兰で樵谙呓?；漠a(chǎn)物。

Base played a crucial role in this reaction: in the Pd2/L1 catalyzed α-arylation of ethy malonate, K3PO4 is the base of choice; in the α-arylation of ethyl acetoacetate, K2CO3 is the most effectiv base.

在這類(lèi)催化反應(yīng)中黄色网站在线看国产免费，堿的選擇具有重要的影響：以K3PO4為堿大屌淫网站，Pd2/L1催化體系在丙二酸二乙酯的α-芳基化中，富電子溴代芳烴顯示較好的活性色网站性感污；Pd2/L1催化的乙酰乙酸乙酯α-芳基化時(shí)性色欲情免费网站，以K2CO3為堿，催化體系顯示較好的活性可以直接进入的黄色网站，這個(gè)催化體系可控制反應(yīng)得到α-芳基乙酰乙酸乙酯99re视频这里只有精品首页6，而不是脫乙酰基的產(chǎn)物狼友免费在线观看视频。