RhodiumIII-Catalyzed Successive Csp2‒H and Csp2‒Csp2 Bond Activation of Aryl Oximes: Synthetic and Mechanistic Studies

2022 ◽  
Author(s):  
Guo-Jun Deng ◽  
Cheng Li ◽  
Fuhong Xiao ◽  
Huawen Huang ◽  
Bin Zhao
Keyword(s):  
Bond Activation ◽  
Raw Materials ◽  
Tandem Reaction ◽  
Mechanistic Studies ◽  
Practical Strategy

Merging selective C–H cleavage with C–C cleavage in a tandem reaction has been a practical strategy that permits skeletal diversification from simple raw materials. Herein, we describe a rhodiumIII-catalyzed redox-neutral...

Nickel-Catalyzed Hydroalkenylation of Alkynes through C–F Bond Activation: Synthesis of 2-Fluoro-1,3-dienes

Synthesis ◽  
2017 ◽  
Vol 49 (16) ◽  
pp. 3569-3575 ◽  
Author(s):  
Junji Ichikawa ◽  
Yota Watabe ◽  
Kohei Kanazawa ◽  
Takeshi Fujita
Keyword(s):  
Bond Activation ◽  
Oxidative Cyclization ◽  
Coupling Reactions ◽  
Mechanistic Studies ◽  
Co Catalyst

2-Fluoro-1,3-dienes were synthesized through nickel-catalyzed coupling reactions between β,β-difluorostyrenes and alkynes in the presence of ZrF4 as co-catalyst and a hydride source derived from triethylborane and lithium isopropoxide. Mechanistic studies revealed that the carbon–fluorine bond was cleaved by β-fluorine elimination from intermediary nickelacyclopentenes generated through oxidative cyclization of the two substrates.

ChemInform Abstract: Ruthenium-Catalyzed Oxidative Coupling of Primary Amines with Internal Alkynes Through C-H Bond Activation: Scope and Mechanistic Studies.

ChemInform ◽  
2015 ◽  
Vol 46 (39) ◽  
pp. no-no
Author(s):  
Sara Ruiz ◽  
Pedro Villuendas ◽  
Manuel A. Ortuno ◽  
Agusti Lledos ◽  
Esteban P. Urriolabeitia
Keyword(s):  
Oxidative Coupling ◽  
Bond Activation ◽  
Primary Amines ◽  
Mechanistic Studies ◽  
Internal Alkynes

scholarly journals Catalytic Benzolactamization Through Isonitrile Insertion Enabled 1,4-Palladium Shift

2021 ◽  
Author(s):  
Fulin Zhang ◽  
Ruihua Zhao ◽  
Lei Zhu ◽  
Yinghua Yu ◽  
Saihu Liao ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Heterocyclic Compounds ◽  
Bond Activation ◽  
Bond Formation ◽  
Bioactive Molecules ◽  
Mechanistic Studies ◽  
Carbon And Nitrogen ◽  
New Methods ◽  
Novel Approach ◽  
Bicyclic System

<b>Isoindolinone is a class of versatile <i>N</i>-heterocycles embedded in many bioactive molecules and natural products. The invention of new methods to synthesize these heterocyclic compounds with easily accessible chemicals is always attractive. Herein, a conceptually novel approach to access this bicyclic system via isonitrile insertion enabled 1,4-pallaidum shift is described. Compared with conventional isonitrile participated C-H bond activation, both carbon and nitrogen atoms in isonitrile moiety are engaged in new bond formation. Notably, two different isoindolinones can be obtained selectively by switching the bases employed. Mechanistic studies including DFT calculations have shed lights on the reaction mechanism and explained the selectivity led to different products. Moreover, the power of current benzolactamization is further demonstrated by providing concise routes to key intermediates of indoprofen, indobufen, aristolactams, lennoxamine and falipamil.</b>

scholarly journals Consultation Urgency And Counseling As Islamic Legal Strategy In Legal Positivisation In Indonesia

2019 ◽  
Vol 10 (2) ◽  
pp. 232
Author(s):  
Muhammad Shohibul Itmam
Keyword(s):  
Islamic Law ◽  
Raw Materials ◽  
Positive Law ◽  
Practical Strategy ◽  
Empirical Law ◽  
Legal Thinking ◽  
Special Pattern ◽  
Legal Strategy ◽  
Professional Consultation

<p>Islamic law in the context of fiqh positivization needs certain strategies. consultation and counseling can be a strategy in islamic law positivisation. various strategies and explanations provide a special pattern in islamic legal thinking in indonesia. this writing discusses consultation and counseling as an islamic legal strategy leading to legal positivity in indonesia. with an elaborative approach between normative law and empirical law  this writing concludes that islamic law is one part of the raw materials of national law that can be managed pluralistically with other laws that grow in indonesia. the plurality of indonesian law which is an empirical constitution can bring with islamic law through professional consultation and consequences. The practical strategy is uniting perceptions which are the substance of islamic teachings related to the meaning of sharia and fiqh in the values of universality of humanity such as the substance of justice, honesty, equality of balance and liking. with the strategy such islamic law can be a solution for national law at the secondary of islamic laws can move to color the development of national law into positive law.</p>

New Open-loop Recycling Approaches for Disposable Diaper Waste

2021 ◽  
Author(s):  
Jee Khan Lim ◽  
Julian Müller ◽  
Fatin Norsuaidah Mahdi ◽  
Soo Kien Chen ◽  
Kar Ban Tan ◽  
...  
Keyword(s):  
Closed Loop ◽  
Raw Materials ◽  
Lithium Ion ◽  
Open Loop ◽  
Environmental Damage ◽  
Waste Generation ◽  
Commercial Scale ◽  
Practical Strategy ◽  
Single Use ◽  
Disposable Diapers

Today's disposable diapers have become an indispensable choice among hygiene products, reflected in their massive global consumption and waste generation. Most of the diaper waste is neither segregated nor treated and ends up in landfills or incinerators. The reported life cycle assessment highlights that the diaper waste is not solely generated after single-use but begins as early as the raw materials acquisition stage. Although what is done cannot be undone, diaper waste can be recycled. Diaper waste valorization has been explored on laboratory- and commercial-scales for years, with varying degrees of success. Leading diaper manufacturers such as Procter & Gamble, Kimberley-Clark and Unicharm are making progress in establishing closed-loop recycling of used diapers and converting diaper waste into new diapers. However, the wide window of possible new products made from diaper waste has yet to be fully exploited. This review focuses on the enormous promise of diaper waste from the perspective of emerging open-loop recycling pathways. We demonstrate that diaper waste was harnessed and converted into non-diaper products, including energy pellets, anode material for lithium-ion batteries, concrete admixture, catalysts, soil amendment, and mushroom cultivation substrates. We also explore several active, commercial-scale diaper recycling approaches and provide a comprehensive blueprint to encourage open-loop recycling. Open-loop recycling is a practical strategy for managing diaper waste, rectifying environmental damage, and contributing to circular supply chains.

Kinetico-mechanistic studies on CX (X=H, F, Cl, Br, I) bond activation reactions on organoplatinum(II) complexes

2014 ◽  
Vol 279 ◽  
pp. 115-140 ◽  
Author(s):  
Margarita Crespo ◽  
Manuel Martínez ◽  
S. Masoud Nabavizadeh ◽  
Mehdi Rashidi
Keyword(s):  
Bond Activation ◽  
Mechanistic Studies

From Allylic Alcohols to Aldols through a New Nickel-Mediated Tandem Reaction: Synthetic and Mechanistic Studies

2006 ◽  
Vol 12 (12) ◽  
pp. 3261-3274 ◽  
Author(s):  
David Cuperly ◽  
Julien Petrignet ◽  
Christophe Crévisy ◽  
René Grée
Keyword(s):  
Tandem Reaction ◽  
Allylic Alcohols ◽  
Mechanistic Studies
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