Thiol-Promoted Selective Addition of Ketones to Aldehydes
作者:Regev Parnes、Sachin Narute、Doron Pappo
DOI:10.1021/ol502937n
日期:2014.11.21
A simple and efficient thiol-mediated addition of ketones to aromatic and aliphatic aldehydes is reported. This thermodynamically controlled Pummerer/aldolreaction, which can tolerate both moisture and protic functional groups, provides a direct entry to syn-β-thioketones in high chemo- and regioselectivity. Mechanistic studies revealed that selective transformation of the aldehyde to an electrophilic
Green, rapid, and highly efficient syntheses of
<i>α</i>
,
<i>α′</i>
‐bis[(aryl or allyl)idene]cycloalkanones and 2‐[(aryl or allyl)idene]‐1‐indanones as potentially biologic compounds via solvent‐free microwave‐assisted Claisen–Schmidt condensation catalyzed by MoCl
<sub>5</sub>
作者:Reza Bakhshi、Behzad Zeynizadeh、Hossein Mousavi
DOI:10.1002/jccs.201900081
日期:2020.4
A new, green, and highly efficient protocol for the expeditious preparation of some α,α′‐bis[(aryl or allyl)idene]cycloalkanones and 2‐[(aryl or allyl)idene]‐1‐indanones via a simple microwave‐assisted Claisen–Schmidt condensation reaction catalyzed by MoCl5 was successfully developed. Outstanding features of the current methodology include the use of solvent‐free conditions, simple operation, use of