Remarkable Rate Acceleration of Imidazole-Promoted Baylis−Hillman Reaction Involving Cyclic Enones in Basic Water Solution
作者:Sanzhong Luo、Peng George Wang、Jin-Pei Cheng
DOI:10.1021/jo035345p
日期:2004.1.1
The Baylis−Hillmanreaction of cyclic enones was greatly accelerated in basic water solution with imidazoles as catalysts, which resulted in short reaction time, high yields, and expanding substrate scopes. Bicarbonate solution was shown to be the optimal reaction medium for the reaction in this study. The apparent “enhanced basicity” of imidazoles accounted for the rate increase in alkaline solution
Bifunctional Polymeric Organocatalysts and Their Application in the Cooperative Catalysis of Morita–Baylis–Hillman Reactions
作者:Cathy Kar-Wing Kwong、Rui Huang、Minjuan Zhang、Min Shi、Patrick H. Toy
DOI:10.1002/chem.200601197
日期:2007.3.5
these polymeric reagents contained either alkyl alcohol or phenol groups on the polymer backbone. The use of these materials as organocatalysts in a range of Morita-Baylis-Hillman reactions indicated that hydroxyl groups could participate in the reactions and accelerate product formation. In the cases examined, phenol groups were more effective than alkyl alcohol groups for catalyzing the reactions
Synthesis of Indolylquinolines, Indolylacridines, and Indolylcyclopenta[<i>b</i>]quinolines from the Baylis–Hillman Adducts: An in Situ [1,3]-Sigmatropic Rearrangement of an Indole Nucleus To Access Indolylacridines and Indolylcyclopenta[<i>b</i>]quinolines
作者:Chintakunta Ramesh、Po-Min Lei、Donala Janreddy、Veerababurao Kavala、Chun-Wei Kuo、Ching-Fa Yao
DOI:10.1021/jo301313m
日期:2012.10.5
A simple and easy route to the synthesis of a variety of structurally diverse indolylquinolines, indolylacridines, and indolylcyclopenta[b]quinolinederivatives via the reductive cyclization of C-alkylated indole derivatives, derived from acyclic as well as cyclic Baylis–Hillman adducts with indoles, is described. An unusual in situ [1,3]-sigmatropic rearrangement of the indole nucleus was observed
一种简单易行的途径,可通过C-烷基化的吲哚衍生物的还原环化反应,合成各种结构多样的吲哚基喹啉,吲哚基吡啶和吲哚基环戊[ b ]喹啉衍生物,描述。在含有吲哚的α-区域选择性B–H加合物的还原环化过程中,观察到吲哚核的不寻常的原位[1,3]-σ重排,产生吲哚基吡啶和吲哚基环戊[ b ]喹啉衍生物。
Simple, Facile, and One-Pot Conversion of the Baylis−Hillman Adducts into Functionalized 1,2,3,4-Tetrahydroacridines and Cyclopenta[<i>b</i>]quinolines
A simple, facile, and one-pot synthesis of functionalized 1,2,3,4-tetrahydroacridines and cyclopenta[b]-quinolines from the Baylis-Hillman alcohols, i.e., 2-[hydroxy(2-nitroaryl)methyl]cycloalk-2-enones, is described.