Lewis Base Promoted Reduction of CO2 with BH3 NH3 into Boryl Formates: CO2 as a Carbon Source in Organic Synthesis Under Mild Conditions

2018 ◽  
Vol 2018 (14) ◽  
pp. 1739-1743 ◽  
Author(s):  
Bo Zhang ◽  
Gaixia Du ◽  
Wei Hang ◽  
Sheng Wang ◽  
Chanjuan Xi
Keyword(s):  
Carbon Source ◽  
Organic Synthesis ◽  
Lewis Base ◽  
Mild Conditions ◽  
Reduction Of Co2

scholarly journals Photocatalytic three-component asymmetric sulfonylation via direct C(sp3)-H functionalization

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Shi Cao ◽  
Wei Hong ◽  
Ziqi Ye ◽  
Lei Gong
Keyword(s):  
Asymmetric Catalysis ◽  
Organic Synthesis ◽  
Photochemical Reaction ◽  
Low Cost ◽  
Bioactive Molecules ◽  
Atom Economy ◽  
Mild Conditions ◽  
Wide Range ◽  
Unsaturated Carbonyl Compound ◽  
Direct Functionalization

AbstractThe direct and selective C(sp3)-H functionalization of cycloalkanes and alkanes is a highly useful process in organic synthesis owing to the low-cost starting materials, the high step and atom economy. Its application to asymmetric catalysis, however, has been scarcely explored. Herein, we disclose our effort toward this goal by incorporation of dual asymmetric photocatalysis by a chiral nickel catalyst and a commercially available organophotocatalyst with a radical relay strategy through sulfur dioxide insertion. Such design leads to the development of three-component asymmetric sulfonylation involving direct functionalization of cycloalkanes, alkanes, toluene derivatives or ethers. The photochemical reaction of a C(sp3)-H precursor, a SO2 surrogate and a common α,β-unsaturated carbonyl compound proceeds smoothly under mild conditions, delivering a wide range of biologically interesting α-C chiral sulfones with high regio- and enantioselectivity (>50 examples, up to >50:1 rr and 95% ee). This method is applicable to late-stage functionalization of bioactive molecules, and provides an appealing access to enantioenriched compounds starting from the abundant hydrocarbon compounds.

Production of novel carbon nanostructures by electrochemical reduction of polychlorinated organic rings under mild conditions for supercapacitors

2021 ◽  
Author(s):  
Züleyha Kudaş ◽  
Emir Çepni ◽  
Emre Gür ◽  
Duygu Ekinci
Keyword(s):  
Carbon Source ◽  
Electrochemical Reduction ◽  
Electrochemical Method ◽  
Carbon Nanostructures ◽  
Electrochemical Growth ◽  
Mild Conditions ◽  
One Step ◽  
The One ◽  
Carbon Based

Here, new carbon-based nanostructures were prepared by the one-step electrochemical method using hexagonal and pentagonal polychlorinated organic rings as carbon source. The electrochemical growth of carbon nanostructures on substrates was...

Bromotrifluoromethane: A Useful Reagent for Hydrotrifluoromethylation of Alkenes and Alkynes

Synlett ◽  
2018 ◽  
Vol 29 (08) ◽  
pp. 1028-1032 ◽  
Author(s):  
Xing Zheng ◽  
Xingang Zhang ◽  
Yu-Yan Ren
Keyword(s):  
Visible Light ◽  
Organic Synthesis ◽  
Functional Group ◽  
Mild Conditions ◽  
Industrial Material ◽  
Reaction Proceeds

Bromotrifluoromethane (CF3Br) is a simple, inexpensive and abundant industrial material employed as a trifluoromethylating reagent. However, only limited strategies using CF3Br as a fluorine source are reported. Herein, we describe a visible-light-induced hydrotrifluoromethylation of alkenes and alkynes with CF3Br. The reaction proceeds under mild conditions with good functional group tolerance, providing a new route for the application of BrCF3 in organic synthesis.

Ni0.85Co0.15WO4 for Photocatalytic Reduction of CO2 Under Mild Conditions with High Activity and Selectivity

2020 ◽  
Vol 150 (11) ◽  
pp. 3071-3078
Author(s):  
Chunmei Guo ◽  
Biao Guo ◽  
Xiaosu Gao ◽  
Jing Liang ◽  
Qide Meng ◽  
...  
Keyword(s):  
High Activity ◽  
Photocatalytic Reduction ◽  
Mild Conditions ◽  
Reduction Of Co2

scholarly journals Direct Dehydrogenative Coupling of Alcohols with Hydrosilanes Promoted by Sodium tri(sec-butyl)borohydride

Catalysts ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 618 ◽  
Author(s):  
Maciej Skrodzki ◽  
Maciej Zaranek ◽  
Samanta Witomska ◽  
Piotr Pawluc
Keyword(s):  
Organic Synthesis ◽  
Catalytic System ◽  
Mild Conditions ◽  
Dehydrogenative Coupling ◽  
Stoichiometric Reaction ◽  
Work Up

Alkoxysilanes find application in many areas of chemistry ranging from research-scale organic synthesis to multi-ton production of materials. Classically, they are obtained in stoichiometric reaction of alcoholysis of chlorosilanes, however, recent years brought development in the field of direct dehydrogenative coupling of hydrosilanes with alcohols, which is a more atom-economic and benign alternative to the former process. In this paper, we report the use of sodium tri(sec-butyl)borohydride as a convenient promoter of this reaction. Exemplary syntheses carried out under mild conditions and without additional solvents, followed by very easy work-up procedure, show excellent potential for application of so devised catalytic system.

Role of Lewis-Base-Coordinated Halogen(I) Intermediates in Organic Synthesis: The Journey from Unstable Intermediates to Versatile Reagents

2017 ◽  
Vol 2017 (37) ◽  
pp. 5497-5518 ◽  
Author(s):  
Somraj Guha ◽  
Imran Kazi ◽  
Anuradha Nandy ◽  
Govindasamy Sekar
Keyword(s):  
Organic Synthesis ◽  
Lewis Base
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