Efficient construction of 5H‐1,4‐benzodiazepine derivatives by a catalyst‐free direct aerobic oxidative annulation strategy

ChemSusChem ◽  
2021 ◽  
Author(s):  
Qing Xu ◽  
Qi Wang ◽  
Xiaolan Zhang ◽  
Feng Han ◽  
Jianping Liu
Keyword(s):  
Catalyst Free ◽  
Efficient Construction ◽  
Benzodiazepine Derivatives

An efficient construction of CN bond under catalyst‐free and room temperature conditions

2021 ◽  
Vol 58 (5) ◽  
pp. 1179-1191
Author(s):  
Jinpeng Zhang ◽  
Jing Liu ◽  
Lei Dai ◽  
Yuqian Ge ◽  
Linlin Xu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Catalyst Free ◽  
Temperature Conditions ◽  
Efficient Construction

scholarly journals Catalyst-free synthesis of novel 1,5-benzodiazepines and 3,4-dihydroquinoxalines using isocyanide-based one-pot, three- and four-component reactions

RSC Advances ◽  
2021 ◽  
Vol 11 (39) ◽  
pp. 24466-24473
Author(s):  
Reagan L. Mohlala ◽  
E. Mabel Coyanis ◽  
Manuel A. Fernandes ◽  
Moira L. Bode
Keyword(s):  
Benzimidazole Derivatives ◽  
One Pot ◽  
Catalyst Free ◽  
Benzodiazepine Derivatives

Reaction of benzimidazole derivatives with an isocyanide and acetone led to tricyclic benzodiazepine derivatives or dihydroquinoxalines depending on the nature of the substituents R1 and R2.

Facile Synthesis of Spirocyclic Tetrahydroquinolines via C(sp3)–H Functionalization in a Cascade Redox Process

Synthesis ◽  
2021 ◽  
Author(s):  
Jian Xiao ◽  
Shitao Yu ◽  
Liping Yu ◽  
Bin Qiu ◽  
Peizhen Dong
Keyword(s):  
Knoevenagel Condensation ◽  
Hydride Transfer ◽  
Redox Process ◽  
Environmentally Benign ◽  
Atom Economy ◽  
Facile Synthesis ◽  
Catalyst Free ◽  
Efficient Construction

AbstractAn environmentally benign cascade redox process was developed for the efficient construction of the pharmaceutically significant spirocyclic tetrahydroquinolines via sequential SNAr/Knoevenagel condensation/[1,5]-hydride transfer/cyclization. This green transformation has the features of being catalyst-free, additive-free, operationally simple, and has high step- and atom-economy.

Efficient Construction of Order-Preserving Encryption Using Pseudo Random Function

2015 ◽  
Vol E98.B (7) ◽  
pp. 1276-1283 ◽  
Author(s):  
Nam-Su JHO ◽  
Ku-Young CHANG ◽  
Do-Won HONG
Keyword(s):  
Random Function ◽  
Efficient Construction

Metal-Free Photoinduced Hydroalkylation Cascade Enabled by an Electron-Donor-Acceptor Complex

2020 ◽  
Author(s):  
José Tiago Menezes Correia ◽  
Gustavo Piva da Silva ◽  
Camila Menezes Kisukuri ◽  
Elias André ◽  
Bruno Pires ◽  
...  
Keyword(s):  
Electron Donor ◽  
Functional Group ◽  
Photoexcited Electron ◽  
One Pot ◽  
Quaternary Centers ◽  
Metal Free ◽  
Acceptor Complex ◽  
Catalyst Free ◽  
Donor Acceptor ◽  
Radical Cascade

A metal- and catalyst-free photoinduced radical cascade hydroalkylation of 1,7-enynes has been disclosed. The process is triggered by a SET event involving a photoexcited electron-donor-aceptor complex between NHPI ester and Hantzsch ester, which decomposes to afford a tertiary radical that is readily trapped by the enyne. <a>The method provides an operationally simple, robust and step-economical approach to the construction of diversely functionalized dihydroquinolinones bearing quaternary-centers. A sequential one-pot hydroalkylation-isomerization approach is also allowed giving access to a family of quinolinones. A wide substrate scope and high functional group tolerance was observed in both approaches</a>.

High-efficient Construction and Long-term Durability of Concrete Structures with Low Dust Emission Type Dry Spray System

2019 ◽  
Vol 57 (5) ◽  
pp. 391-396
Author(s):  
M. Mori ◽  
M. Soukura ◽  
T. Okamura
Keyword(s):  
Dust Emission ◽  
Concrete Structures ◽  
Spray System ◽  
High Efficient ◽  
Efficient Construction ◽  
Durability Of Concrete

Problem of energy efficiency in the model of sustainable development in Ukraine: EU experience

2019 ◽  
pp. 18-23
Author(s):  
Vasyl Zelenko ◽  
Yaryna Ferenchak ◽  
Nataliya Zelenko
Keyword(s):  
Energy Efficiency ◽  
Sustainable Development ◽  
Energy Saving ◽  
Association Agreement ◽  
Climate Conditions ◽  
The Sustainable Development ◽  
Non Profit ◽  
Efficiency Measures ◽  
Efficient Construction

The paper outlines major preconditions of development of energy efficiency programs and the process of their introduction from the perspective of sustainable development concept. Energy saving measures of European Union are examined, its experience and results, like green books and Thermie programs, etc are analyzed. The paper also specifies relevant activities and responsibilities undertaken by Member States by 2030 and the rates planned to be achieved. The experience of neighboring Poland in energy efficiency promotion is analyzed, as far as the country most closely resembles Ukraine by the initial rates in 1990. We calculated conditional losses of Ukraine in 2017 as the gap between the rates of energy efficiency of Ukraine and Poland (similarity of climate conditions and the state of housing funds allowed us to assume that the comparison will be the most correct regarding Ukraine). The results of calculations make us conclude that the funds are used most efficiently if the money designated, for example, for subsidizing of population are directed at strengthening of energy efficiency (at least up to the level of neighboring country). It will result in saving of about 40 billion. This is the amount defined as Ukrainian capacity in terms of improvement of energy saving and possible results of its realization. The paper determines the stage Ukraine is at in introduction of energy efficiency measures and programs: “warm loans” program; conditions regarding energy saving in Ukraine enshrined in the EU-Ukraine Association Agreement; creation of legal basis, namely the Law of Ukraine “On Energy Efficiency Fund” as of 8 June 2017. The role of newly created Energy Efficiency Fund is analyzed. Special attention is paid to the fact that energy efficient construction is one of international liabilities undertaken by Ukraine. The presence of The Active House Alliance at Ukrainian market is an important achievement in this sphere as it is the non-profit association aiming at creation of housing concept corresponding to the sustainable development principles.

SchemEX: Efficient Construction of a Data Catalogue by Stream-Based Indexing of Linked Data

2012 ◽  
Author(s):  
Mathias Konrath ◽  
Thomas Gottron ◽  
Steffen Staab ◽  
Ansgar Scherp
Keyword(s):  
Linked Data ◽  
Efficient Construction
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