91热视频在线播放,av在线人妻,97超碰免费看,久久99日一本,精品日本一区,久草免费黄色电影,人人精品综合网,午夜日韩有码中文字幕,久久久久久五月

 
 
             
       

  Site: Index >> Technology >> Chemical Thesis >> Thesis Detail

Thesis Name: Reactions of electron-deficient alkynes and allenes under phosphine catalysis
Usage: chemistry
Keyword: GAMMA-ADDITION REACTION; BAYLIS-HILLMAN REACTION; DIMETHYL ACETYLENEDICARBOXYLATE; WITHDRAWING GROUP
Remarks: The development of some new synthetic reactions derived from nucleophilic addition of phosphines to electron-deficient carbon-carbon triple bonds is described. These reactions show that the phosphine plays the role of a nucleophile as well as an excellent leaving group. The central problem is to generate a 1,3-dipole from atkynoates or allenoates; (2,3-butadienoates) by interaction with various phosphines. This study illuminates the unusual phenomena and shows how this understanding allows control of the reaction.

URL:http://pubs.acs.org/cgi-bin/article.cgi/achre4/2001/34/i07/pdf/ar000253x.pdf
Original file: No File

Promulgator Detail
Full name: administrator
Country: CN
City: Dalian 
Company Name: teloon Soft Strategy Co.,LTD
Homepage: http://www.hqsq.net
E-mail: reply
Phone: 86-411-82811662
Fax: 86-411-82819667
Company Address: 26 Renmin Road ,Dalian China
Zip/Postal Code: 116001 
Introduction: As a professional E-information service platform with authoritative news and reports in chemical industry of chinese export and import market.Hichem has been received universally and praised highly since its established in 2001.In 2003,by joint effort of teloon chemicals and teloon soft strategy company(TSSC),Hichem team endeavored to recomposition the site ascribed to market requirement as well as offering our better service.Hichem focused on business to biusiness of new chemicals,fine chemicals,high chemicals and special chemicals.So naturally it is the very one-stop website for chemical information.Our sellers worldwide and build global on-line trade in the chemical industry. 
 

Home | About Us | Contact Us | Disclaimer | Site map
Copyright all reserved by Teloon Chem Corporation 2003-2026
遼ICP備:遼B-2-4-20080120-9
樟树市| 洛浦县| 江安县| 永靖县| 弋阳县| 镇巴县| 富阳市| 襄垣县| 微山县| 亳州市| 商城县| 神农架林区| 诏安县| 儋州市| 资阳市| 双牌县| 沭阳县| 鄂伦春自治旗| 安达市| 呼图壁县| 彭泽县| 崇文区| 和田县| 长春市| 岑溪市| 汉源县| 大同县| 平阳县| 东莞市| 浪卡子县| 沈丘县| 桂东县| 潼关县| 育儿| 乐亭县| 舟山市| 辽宁省| 阿拉善右旗| 宁德市| 金平| 彩票|