摘要: A simple, mild and efficient protocol was developed for the alkylation of fluorene with alcohols in the presence of t-BuOK as catalyst, affording the desired 9-monoalkylfluorenes with near quantitative yields in most cases.DOI: 10.1039/C9RA07557G ...
The t BuOK-catalyzed intramolecular anionic cycloaddition of unsymmetrical bis-propargyl ethers has been applied to the synthesis of naphthofurans. A systematic study of the cyclization system revealed that the amount of base and solvent played an essential role in this reaction. The results showed ...
-BuOK promoted coupling of alkynes and aldehydes: a concise synthetic method of β,γ-unsaturated enones Author links open overlay panelShao-Hua Wang, Yong-Qiang Tu, Min WangShow more Add to Mendeley Share Cite https://doi.org/10.1016/j.tetlet.2006.08.109Get rights and content...
本文阐述了n-BuLi/t-BuOK引发体系溶液了苯共聚的"多活性种互换"模型; 重点分析了钾活性种在本体系中的动力学行为;指出钾活性种不仅增长苯乙烯而且增 长丁二烯;对增长丁二烯来说,丁苯共聚时钾活性种的活性是锂活性种的九倍以上; 本文推导了共聚组成方程式,指出了表观竞聚率的复杂性,并根据我们的实验结果, 计算了...
t-BuOK-Induced Cleavage of Dihydrofuran Derivatives: Synthesis of .beta.-(Diethoxyphosphinyl)-.beta.,.gamma.-unsaturated Ketones... CW Lee,JE Hong,YO Dong - 《Journal of Organic Chemistry》 被引量: 74发表: 1995年 ChemInform Abstract: t-BuOK-Induced Cleavage of Dihydrofuran Derivatives: Synthes...
Buchwald 反应常用的钯催化剂为:Pd2(dba)3, Pd(OAc)2;常用碱有:Cs2CO3, t-BuOK,t-BuONa,常用溶剂: 甲苯,二甲苯,对碘代芳烃反应尤其突出;1,4-二氧六环,由于其自身毒性,有时会用Bu2O代替;叔丁醇也会被用到,如果反应需要更高温度,可用叔戊醇代替。
Reductive cyanation of 1,4-dioxaspiro[4.5]decaK-8-one (F-I) using TosMIC with an alkoxide base, such as t-BuOK, in a solvent mixture such as DME/t-BuOH can give cyanocyclohexane K-I. Reduction of K-I with LAH in an ethereal solvent can give amine K-II. Reaction of K-II with ...
Treatment of Af-tosyl 4-aryl-3-bu1yn-l-ylamines with I2 and K2CO3,followed by the reaction with'BuOK under mild conditions gave 2-aryl-3-iodopyrroles in good yields.The present approach is a one-pot method for the preparation of 2-aryl-3-iodopyrroles from N-tosyl 4-aryl-3-butyn...
E Ihara,T Todaka,K Inoue - 《Journal of Polymer Science Part A Polymer Chemistry》 被引量: 23发表: 2003年 tBuOK/iBu3Al as New Initiating System for Controlled Anionic Polymerization of tert-Butyl Acrylate and Methyl Methacrylate The combination of potassium tert-butoxide (tBuOK) and triisobutyl...
可以通过在t‑BuOH中与醇盐碱诸如t‑ BuOK一起加热来促进异构体混合物的平衡,以使混合物富含1RS,2RS,4RS异构体。该平衡的 混合物与CbzCl在NaHCO 水溶液中反应,然后用EtOAc/己烷研磨产物,可以得到(1RS,2RS, 3 4RS)‑I‑IV,为单一非对映异构体。使用手性固定相通过SFC拆分(1RS,2RS,4RS)‑I‑IV...