Lewis-Acid-Catalysed Reaction of 3-Hydroxy-2-oxindoles with Terminal Alkynes: Synthetic Approaches to the Pyrroloindoline Alkaloids

2017 ◽  
Vol 2017 (21) ◽  
pp. 3078-3091 ◽  
Author(s):  
Lakshmana K. Kinthada ◽  
K. Naresh Babu ◽  
Dikshaa Padhi ◽  
Alakesh Bisai
Keyword(s):  
Lewis Acid ◽  
Terminal Alkynes ◽  
Catalysed Reaction ◽  
Synthetic Approaches

Dibenzo[d,d′]benzo[2,1-b:3,4-b′]difurans with extended π-conjugated chains: synthetic approaches and properties

2022 ◽  
Author(s):  
Masafumi Hirano ◽  
Harumi Okada ◽  
Chikara Hayasaka ◽  
Nobuyuki Komine ◽  
Sayori Kiyota ◽  
...  
Keyword(s):  
Catalysed Reaction ◽  
Synthetic Approaches

Ru-Catalysed reaction of 3,8-di(hexyn-1-yl)dibenzo[d,d']benzo[2,1-b,3,4-b′]difuran [3,8-di(hexyn-1-yl)-DBBDF] with 2 equivalents of methyl (E)-penta-2,4-dienoate produces 3,8-bis[(1E,3E,5E)-2-butyl-6-methoxycarbonylhexa-1,3,5-trien-1-yl]-DBBDF (9a).

scholarly journals Silver-catalyzed carbon–selenium cross-coupling using N-(phenylseleno)phthalimide: an alternate approach to the synthesis of organoselenides

2017 ◽  
Vol 95 (1) ◽  
pp. 51-56 ◽  
Author(s):  
Nirmalya Mukherjee ◽  
Subhajit Pal ◽  
Amit Saha ◽  
Brindaban C. Ranu
Keyword(s):  
Lewis Acid ◽  
Cross Coupling ◽  
Terminal Alkynes ◽  
Organoboronic Acids

Silver(I) catalyzed phenylselenylation of terminal alkynes and organoboronic acids has been demonstrated using N-(phenylseleno)phthalimide as an electrophilic SePh donor. A wide variety of terminal alkynes and organoboronic acids are selenylated efficiently to produce the corresponding alkynyl and diaryl selenides, respectively, in good yields. Silver(I) acts as a Lewis acid in this process.

Lewis acid-catalysed reaction of (cyclo)alkenes with oxiranes

2000 ◽  
Vol 41 (9) ◽  
pp. 1483-1486 ◽  
Author(s):  
David Munro ◽  
Chris Newman
Keyword(s):  
Lewis Acid ◽  
Catalysed Reaction

5-Iodo-1H-1,2,3-triazoles as Versatile Building Blocks

Synthesis ◽  
2020 ◽  
Vol 52 (13) ◽  
pp. 1874-1896 ◽  
Author(s):  
Irina A. Balova ◽  
Natalia A. Danilkina ◽  
Anastasia I. Govdi
Keyword(s):  
Bond Formation ◽  
Cross Coupling ◽  
Building Blocks ◽  
Terminal Alkynes ◽  
Direct Arylation ◽  
Halogen Exchange ◽  
The Creation ◽  
Radiolabeled Compounds ◽  
Synthetic Approaches ◽  
Synthetic Application

Copper-catalyzed azide–alkyne cycloaddition is a useful tool for the synthesis of both 1,2,3-triazoles and 5-iodo-1H-1,2,3-triazoles starting from either terminal alkynes or iodoalkynes. 5-Iodotriazoles have been recognized as very useful building blocks for the synthesis of diverse 1,4,5-trisubstituted 1,2,3-triazoles. Synthetic application of 5-iodo-1,2,3-triazoles through the creation of a new C–C, C–heteroatom, or C–D(T) bond along with the application areas of both iodotriazoles and products of their modification including radiolabeled compounds are discussed.1 Introduction2 Synthetic Approaches to 5-Iodo-1H-1,2,3-triazoles3 5-Iodotriazoles in C–C Bond Formation3.1 Intermolecular C–C Cross-Coupling3.2 Intramolecular Cross-Coupling: Direct Arylation and C–I/C–I Homocoupling­3.3 Other Transformations4 5-Iodotriazoles in Radiolabeling, Halogen Exchange, and Heterocoupling Reactions5 Summary

Ring-opening formal hetero-[5+2] cycloaddition of 1-tosyl-2,3-dihydro-1H-pyrroles with terminal alkynes: entry to 1-tosyl-2,3-dihydro 2,3-dihydro-1H-azepines

2019 ◽  
Vol 55 (75) ◽  
pp. 11295-11298 ◽  
Author(s):  
Ming-Bo Zhou ◽  
Rui Pi ◽  
Fan Teng ◽  
Yang Li ◽  
Jin-Heng Li
Keyword(s):  
Lewis Acid ◽  
Ring Opening ◽  
Bond Cleavage ◽  
Terminal Alkynes ◽  
Acid Catalyzed

Lewis acid-catalyzed formal hetero-[5+2] cycloaddition of 2,3-dihydro-1H-pyrroles with alkynes through C(sp2)–N bond cleavage toward 2,3-dihydro-1H-azepines is described.

ChemInform Abstract: On the Lewis Acid-Catalysed Reaction of the 2,3-Bis(trimethylstannyl)- 1-alkene Moiety with Aldehydes.

ChemInform ◽  
2010 ◽  
Vol 22 (38) ◽  
pp. no-no
Author(s):  
T. N. MITCHELL ◽  
U. SCHNEIDER ◽  
K. HEESCHE-WAGNER
Keyword(s):  
Lewis Acid ◽  
Catalysed Reaction
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