Nickel-catalyzed regioselective carbocyclization of ortho-halophenyl ketones with propiolates: an efficient route to disubstituted indenolsElectronic supplementary information (ESI) available: synthesis and characterization of compounds 3. See http://www.rsc.org/suppdata/cc/b2/b201473d/
作者:Dinesh Kumar Rayabarapu、Chien-Hong Cheng
DOI:10.1039/b201473d
日期:2002.4.19
Carbocylization of o-halophenyl ketones with propiolates in the presence of Ni(dppe)Br2 and Zn powder in acetonitrile at 80 °C afforded the corresponding 2,3-disubstituted indenols.
Ultrasound-Mediated Three-Component Reaction “On-Water” Protocol For the Synthesis of Novel Mono- and bis-1,3-Thiazin-4-one Derivatives
作者:Wael A. A. Arafa、Ashraf M. Mohamed、Ahmed F. Abdel-Magied
DOI:10.3987/com-17-13726
日期:——
Green synthetic and catalyst-free strategy towards the synthesis of novel mono- and bis-1,3-thiazin-4-one scaffolds through a one pot, reaction of carbon disulfide, monoacetylenic esters and amines ...
Synthesis of Seven-membered Lactones via Nickel- and Zinc-Catalyzed Highly Regio- and Stereoselective Cyclization of 2-Iodobenzyl Alcohols with Propiolates
作者:Dinesh Kumar Rayabarapu、Chien-Hong Cheng
DOI:10.1021/ja017390p
日期:2002.5.1
class of substituted seven-membered lactones 3 were conveniently synthesized viacyclization of o-iodobenzyl alcohol 1 (o-IC(6)H(4)CH(2)OH) with various propiolates 2 (RC triple bond CCOOMe) in the presence of Ni(dppe)Br(2) and Zn powder in acetonitrile at 80 degrees C. The catalytic reaction is highly regio- and stereoselective affording seven-membered lactones in moderate to good yields. This methodology
[EN] METHOD TO PREPARE PHENOLICS FROM BIOMASS<br/>[FR] PROCÉDÉ DE PRÉPARATION DE COMPOSÉS PHÉNOLIQUES À PARTIR DE BIOMASSE
申请人:TNO
公开号:WO2016114668A1
公开(公告)日:2016-07-21
The present invention is directed to a method for preparing a final phenolic product from biomass comprising the steps of providing a furanic compound obtainable from biomass; reacting the furanic compound with a dienophile to obtain a phenolic compound; reacting the phenolic compound further to obtain the final phenolic product.
Platinum-Catalyzed Hydrosilylations of Internal Alkynes: Harnessing Substituent Effects to Achieve High Regioselectivity
作者:Douglas A. Rooke、Eric M. Ferreira
DOI:10.1002/anie.201108714
日期:2012.3.26
Rule of thumb: The high yielding title reaction is described with a focus on understanding the factors that govern the regioselectivity of the process (see scheme). Electronic, steric, and functional group properties all influence the selectivity, an understanding of which allows the selective formation of trisubstituted vinylsilanes, which are synthetically useful compounds for accessing stereodefined