A new and efficient one-pot synthesis of aromatic alkynyl ketones from aromatic esters
作者:Sang Jun Yim、Chan Ho Kwon、Duk Keun An
DOI:10.1016/j.tetlet.2007.06.015
日期:2007.7
The reaction of aromaticesters with alkynyllithiums in the presence of lithium morpholinide and BF3·OEt2 gave aromatic alkynyl ketones in good yield (78–87%).
Effective Partial Alkynylation of Carboxylic Acid Derivatives to Alkynyl Ketones
作者:Sang-Jun Yim、Min-Hyeok Kim、Duk-Keun An
DOI:10.5012/bkcs.2010.31.02.286
日期:2010.2.20
The reaction of carboxylic acid derivatives such as esters, acid chlorides and acid anhydrides with alkynyl lithiums in the presence of lithium morpholinide and $BF_3\cdot}OEt_2$ gave alkynyl ketones in good yield (73-96%).
The metal-free oxidative alkene methylation/alkynylation of 1,4-enyn-3-ols with an organic peroxide as the methyl source has been developed, which provides straightforward and practical access to the challenging quaternary-carbon-containing but-3-yn-1-ones. The method is reasoned to go through methylation of functional alkenes utilizing dicumyl peroxide as the methylating reagent and subsequent intermolecular
Metal-Free Iodosulfonylation of Internal Alkynes: Stereodefined Access to Tetrasubstituted Olefins
作者:Ravi Kumar、Vikas Dwivedi、Maddi Sridhar Reddy
DOI:10.1002/adsc.201700576
日期:2017.8.17
The stereoselective E‐iodosulfonylation of internalalkynes for synthesizing highly defined tetrasubstituted olefins using sodium phenyl sulfinate and iodine has been achieved. Most of the alkynes explored are non‐symmetrical and the regioselection is under full control. Arylalkynes with various electron‐withdrawing groups like keto, aldehyde, ester, amide, cyano, sulfone, bromo, chloro and iodo on