Carbonylative Polymerization of Epoxides Mediated by Tri‐metallic Complexes: A Dual Catalysis Strategy for Synthesis of Biodegradable Polyhydroxyalkanoates

Author(s):  
Jin-Chuang Yang ◽  
Jun Yang ◽  
Wen-Bing Li ◽  
Xiao-Bing Lu ◽  
Ye Liu
Keyword(s):  
Author(s):  
Hannah E. Burdge ◽  
Takuya Oguma ◽  
Takahiro Kawajiri ◽  
Ryan Shenvi

<div><div><div><p>The first synthesis of GB22 was accomplished by a con- cise, modular route. Two building blocks converged in a novel sp3-sp2 attached-ring coupling that used Ir/Ni dual-catalysis to reverse the regioselectivity of siloxycy- clopropane arylation. This cross-coupling proved general to access β-substituted tetralones via ring-expansion of indanone-derived siloxycyclopropanes. The congested, bridging rings of the GB alkaloids were completed using an aluminum-HFIP complex that effected intramolecular cyclization of an acid-labile substrate.</p></div></div></div>


2019 ◽  
Author(s):  
Hannah E. Burdge ◽  
Takuya Oguma ◽  
Takahiro Kawajiri ◽  
Ryan Shenvi

<div><div><div><p>The first synthesis of GB22 was accomplished by a con- cise, modular route. Two building blocks converged in a novel sp3-sp2 attached-ring coupling that used Ir/Ni dual-catalysis to reverse the regioselectivity of siloxycy- clopropane arylation. This cross-coupling proved general to access β-substituted tetralones via ring-expansion of indanone-derived siloxycyclopropanes. The congested, bridging rings of the GB alkaloids were completed using an aluminum-HFIP complex that effected intramolecular cyclization of an acid-labile substrate.</p></div></div></div>


Synlett ◽  
2020 ◽  
Author(s):  
Shengqing Zhu ◽  
Lingling Chu ◽  
Xiaoliang Feng ◽  
Lei Guo

AbstractA formal ethylene alkylarylation reaction with aryl halides and alkyl oxalates enabled by synergistic photoredox/nickel catalysis is reported. This protocol takes advantage of borates as a traceless activation group, achieving the formal ethylene difunctionalized products via a catalytic three-component 1,2-alkylarylation of vinyl borate followed by a base-assisted deborylation process. The mild conditions allow for excellent functional groups compatibility and broad substrate scope.


2017 ◽  
Vol 129 (20) ◽  
pp. 5643-5647 ◽  
Author(s):  
Akira Saito ◽  
Naoya Kumagai ◽  
Masakatsu Shibasaki
Keyword(s):  

2016 ◽  
Vol 52 (62) ◽  
pp. 9628-9631 ◽  
Author(s):  
Xuezhao Li ◽  
Jinguo Wu ◽  
Liyong Chen ◽  
Xiaoming Zhong ◽  
Cheng He ◽  
...  

Quantitative dynamic capsule–capsule conversion by cooperative binding one carbonate anion and switchable dual catalysis was achieved within an Ir2Co3-type capsule.


ChemInform ◽  
2004 ◽  
Vol 35 (49) ◽  
Author(s):  
Glenn M. Sammis ◽  
Hiroshi Danjo ◽  
Eric N. Jacobsen
Keyword(s):  

2016 ◽  
Vol 18 (7) ◽  
pp. 1712-1712
Author(s):  
Niki R. Patel ◽  
Christopher B. Kelly ◽  
Matthieu Jouffroy ◽  
Gary A. Molander
Keyword(s):  

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