Lewis Acid-Mediated Room-Temperature Cascade Reaction of 3-Hydroxyisoindolin-1-one with Alkynes

2018 ◽  
Vol 83 (7) ◽  
pp. 4257-4263 ◽  
Author(s):  
Jian Li ◽  
Yang Li ◽  
Zhengbing Wang ◽  
Yujia Bian ◽  
Shuhua Bai ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Room Temperature ◽  
Cascade Reaction

ChemInform Abstract: Lewis Acid Catalyzed Cascade Reaction to Carbazoles and Naphthalenes via Dehydrative [3 + 3]-Annulation.

ChemInform ◽  
2014 ◽  
Vol 45 (52) ◽  
pp. no-no
Author(s):  
Shaoyin Wang ◽  
Zhuo Chai ◽  
Yun Wei ◽  
Xiancui Zhu ◽  
Shuangliu Zhou ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Cascade Reaction ◽  
Acid Catalyzed

Synthesis, Characterization and Thermooxidative Properties of Hybrid Block Poly(silane-b-arylacetylene)

2014 ◽  
Vol 1004-1005 ◽  
pp. 527-532
Author(s):  
Ying Jie Xu ◽  
Hui Min Qi ◽  
Ya Ping Zhu ◽  
Fan Wang
Keyword(s):  
Weight Loss ◽  
Oxidative Stability ◽  
Lewis Acid ◽  
Grignard Reagent ◽  
Room Temperature ◽  
Condensation Polymerization ◽  
Thermooxidative Stability ◽  
Thermal Cure ◽  
Inorganic Hybrid ◽  
Thermal And Oxidative Stability

Organic-inorganic hybrid block Poly (silane-b-arylacetylene) (PSbA) have been synthesized through condensation polymerization between chloro-terminated polysilane and diethynylbenzene Grignard reagent, and chloro-terminated polysilane was synthesized through condensation polymerization of dichloromethylvinylsilane in the presence of Mg metal and Lewis acid (ZnCl2, LiCl). The structures of PSbAs were characterized by FTIR, 1H, 13C, 29Si NMR, and GPC. The PSbAs are orange viscous liquid and can be soluble in common organic solvents at room temperature. The thermal cure behavior of PSbAs was determined by DSC, and the thermal and oxidative stability of the cured PSbAs were investigated using TGA. The results showed that the cured PSbAs exhibit high thermal and thermooxidative stability. The degradation temperatures at 5% weight loss for the cured PSbAs are 470-533°C under N2 and 378-456°C under air, and the residue yields at 1000°C are 77.9-82.8% under N2 and 40.4-50.5% under air.

Lewis Acid Catalyzed Room-Temperature Michaelis–Arbuzov Rearrangement

2003 ◽  
Vol 42 (21) ◽  
pp. 2389-2392 ◽  
Author(s):  
Pierre-Yves Renard ◽  
Philippe Vayron ◽  
Eric Leclerc ◽  
Alain Valleix ◽  
Charles Mioskowski
Keyword(s):  
Lewis Acid ◽  
Room Temperature ◽  
Acid Catalyzed

Eosin Y–Yb(OTf)3 catalyzed visible light mediated electrocyclization/indole ring opening towards the synthesis of heterobiaryl-pyrazolo[3,4-b]pyridines

2018 ◽  
Vol 42 (9) ◽  
pp. 6617-6620 ◽  
Author(s):  
Shikha Singh ◽  
Parul Chauhan ◽  
Makthala Ravi ◽  
Prem P. Yadav
Keyword(s):  
Visible Light ◽  
Lewis Acid ◽  
Ring Opening ◽  
Room Temperature ◽  
Eosin Y ◽  
Indole Ring ◽  
Photo Catalysis

Synthesis of heterobiaryl-pyrazolo[3,4-b]pyridines via Lewis acid and visible light photo-catalysis at room temperature.

Visible-Light Photoredox-Catalyzed Cascade Reaction for the Synthesis of Pyrrolo[2,1-a]isoquinoline-Substituted Phosphonates

Synthesis ◽  
2018 ◽  
Vol 51 (02) ◽  
pp. 522-529 ◽  
Author(s):  
Deqing Shi ◽  
Lingna Wang ◽  
Tiancong Ma ◽  
Mingming Qiao ◽  
Qiangxian Wu ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Room Temperature ◽  
Cascade Reaction ◽  
Efficient Synthesis ◽  
Reaction Conditions ◽  
One Pot ◽  
Oxidative Aromatization ◽  
Activated Olefins ◽  
Catalyzed Oxidation

A visible-light photoredox-catalyzed oxidation/[3+2] cycloaddition/oxidative aromatization cascade reaction of [(3,4-dihydroisoquinolin-2(1H)-yl)methyl]phosphonates and activated olefins or alkynes for the efficient synthesis of potentially biological active pyrrolo[2,1-a]isoquinoline-substituted phosphonates was developed. This transformation features mild reaction conditions (i.e., visible light irradiation, room temperature), molecular oxygen (O2) as a green oxidant, simple ‘one-pot’ operation.

InBr3-Catalyzed Synthesis of Aryl 1,2-trans-Thio(seleno)glycosides

Synlett ◽  
2017 ◽  
Vol 28 (17) ◽  
pp. 2311-2314 ◽  
Author(s):  
Lan Yu ◽  
Weihua Xue ◽  
Teng Ma ◽  
Changwei Li ◽  
Haijing Liang ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Room Temperature ◽  
Efficient Catalyst ◽  
Air Atmosphere

InBr3 is demonstrated to be an efficient catalyst for reactions of fully acetated aldoses with aryl mercaptans or selenophenol at room temperature, rapidly furnishing the corresponding thioglycosides or selenoglycosides with exclusively 1,2-trans-stereoselectivity. This bromide is an air- and moisture-stable Lewis acid and therefore the reactions can be performed in air atmosphere making the procedure simple to perform.

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