Acyclic stereoselection. 46. Stereochemistry of the Michael addition of N,N-disubstituted amide and thioamide enolates to .alpha.,.beta.-unsaturated ketones
Boron‐Catalyzed Dehydrative Friedel‐Crafts Alkylation of Arenes Using
<i>β</i>
‐Hydroxyl Ketone as MVK Precursor
作者:Htet Htet San、Jie Huang、Seinn Lei Aye、Xiang‐Ying Tang
DOI:10.1002/adsc.202001269
日期:2021.4.27
Boron‐catalyzed environmentally benign dehydrative Friedel‐Crafts alkylation of indole/pyrrole and aniline derivatives with β‐hydroxyl ketones has been developed for the first time. This method provides an efficient and green replacement of toxic and unstable methylvinylketone (MVK) by safer and cheaper β‐hydroxyl ketone. The reaction features easy operation, wide substrate scope and significantly, only water
Copper- and Cobalt-Catalyzed Direct Coupling of sp<sup>3</sup> α-Carbon of Alcohols with Alkenes and Hydroperoxides
作者:Jun-Kee Cheng、Teck-Peng Loh
DOI:10.1021/ja510635k
日期:2015.1.14
A zerovalent copper- and cobalt-catalyzed direct coupling of the sp(3) α-carbon of alcohols with alkenes and hydroperoxides was developed in which the hydroperoxides acted as radical initiator and then coupling partner. 1,3-Enynes and vinylarenes underwent alkylation-peroxidation to give β-peroxy alcohols and β-hydroxyketones correspondingly with excellent functional group tolerance. The resulting