Polycondensation of bis(α-diazo-1,3-dicarbonyl) compounds with dicarboxylic acids: an efficient access to functionalized alternating polyesters

2020 ◽  
Vol 11 (10) ◽  
pp. 1708-1712
Author(s):  
Xin Wang ◽  
Yuanli Ding ◽  
Youhua Tao ◽  
Zikun Wang ◽  
Zhen Wang ◽  
...  

We report an efficient and mild approach to functionalized alternating polyesters on the basis of O–H insertion polycondensation of bis(α-diazo-1,3-dicarbonyl) compounds with dicarboxylic acids.

2021 ◽  
Author(s):  
Rahul Suresh ◽  
Itai Massad ◽  
Ilan Marek

The Cope rearrangement of 2,3-divinyloxiranes, a rare example of epoxide C-C bond cleavage, results in 4,5-dihydrooxepines which are amenable to hydrolysis, furnishing 1,6-dicarbonyl compounds containing two contiguous stereocenters at the 3- and 4- positions. We employ...


1992 ◽  
Vol 28 (12) ◽  
pp. 1416-1419
Author(s):  
A. A. Gorbunov ◽  
M. Yu. Dormidontov ◽  
V. S. Shklyaev ◽  
Yu. V. Shklyaev

Synthesis ◽  
2018 ◽  
Vol 50 (11) ◽  
pp. 2150-2162 ◽  
Author(s):  
Sandip Murarka ◽  
Andrey Antonchick

Recent years have witnessed a significant advancement in the field of radical oxidative coupling of ketones towards the synthesis of highly useful synthetic building blocks, such as 1,4-dicarbonyl compounds, and biologically important heterocyclic and carbocyclic compounds. Besides oxidative homo- and cross-coupling of enolates, other powerful methods involving direct C(sp3)–H functionalizations of ketones­ have emerged towards the synthesis of 1,4-dicarbonyl compounds. Moreover, direct α-C–H functionalization of ketones has also allowed an efficient access to carbocycles and heterocycles. This review summarizes all these developments made since 2008 in the field of metal-catalyzed/promoted radical-mediated functionalization of ketones at the α-position.1 Introduction2 Synthesis of 1,4-Dicarbonyl Compounds3 Synthesis of Heterocyclic Scaffolds4 Synthesis of Carbocyclic Scaffolds5 Conclusion


2017 ◽  
Vol 359 (22) ◽  
pp. 4062-4066 ◽  
Author(s):  
Xiaojun Zeng ◽  
Zhichao Lu ◽  
Shiwen Liu ◽  
Gerald B. Hammond ◽  
Bo Xu

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