One-pot synthesis of pillar[n]arenes catalyzed by a minimum amount of TfOH and a solution-phase mechanistic study

2012 ◽  
Vol 10 (47) ◽  
pp. 9405 ◽  
Author(s):  
Kai Wang ◽  
Li-Li Tan ◽  
Dai-Xiong Chen ◽  
Nan Song ◽  
Guan Xi ◽  
...  
Keyword(s):  
Solution Phase ◽  
Minimum Amount ◽  
Mechanistic Study ◽  
One Pot ◽  
One Pot Synthesis

One-pot synthesis of β-diketimine ligands

2010 ◽  
Vol 88 (10) ◽  
pp. 1040-1045 ◽  
Author(s):  
Ibrahim El-Zoghbi ◽  
Aysha Ased ◽  
Paul O. Oguadinma ◽  
Ekou Tchirioua ◽  
Frank Schaper
Keyword(s):  
Hydrochloric Acid ◽  
Water Use ◽  
Minimum Amount ◽  
One Pot ◽  
One Pot Synthesis ◽  
Toluenesulfonic Acid ◽  
High Yields ◽  
Optimized Conditions

Symmetric N,N′-dialkyl-2-amino-4-imino-pent-2-enes (nacnacRH) can be prepared in high yields in a simple one-pot reaction from acetylacetone and 2 equiv. of amine. Optimized conditions require the azeotropic removal of water, use of a minimum amount of solvent, and of 1 equiv. of acid. Either para-toluenesulfonic acid, hydrochloric acid, or a mixture of both can be employed, with the latter being most advantageous. Symmetric nacnacRH are thus obtained in higher than 95% purity and with 65% yield for R = Me and 80%–95% yields for R = n-Pr, i-Pr, i-Bu, Bn, Cy, and (+)-CH(Me)Ph.

scholarly journals Catalytic Asymmetric Chlorination of β-Ketoesters Using N-PFB-PyBidine-Zn(OAc)2

Catalysts ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1177
Author(s):  
Junma Ma ◽  
Takumi Suzuki ◽  
Satoru Kuwano ◽  
Takayoshi Arai
Keyword(s):  
Mechanistic Study ◽  
One Pot ◽  
One Pot Synthesis ◽  
Catalytic Asymmetric ◽  
Zinc Enolate

A PyBidine-Zn(OAc)2 complex catalyzed asymmetric chlorination of β-ketoesters. With assistance of NaHCO3, a newly developed N-pentafluorobenzyl-PyBidine (N-PFB-PyBidine)-Zn(OAc)2 catalyst promoted the reaction of α-benzyl-β-ketoesters with N-chlorosuccinimide (NCS) to give the chlorinated products with up to 82% ee. Results of a mechanistic study suggested that zinc-enolate of β-ketoesters was formed on the basic (N-PFB-PyBidine)-Zn(OAc)2 catalyst. The α-chlorinated-β-ketoester was successfully transformed into the chiral epoxide through sequential asymmetric chlorination/cyano-epoxidation in a one-pot synthesis.

A Novel Mechanistic Study on Ultrasound-Assisted, One-Pot Synthesis of Functionalized Benzimidazo[2,1-b]quinazolin-1(1H)-ones

2016 ◽  
Vol 18 (3) ◽  
pp. 162-169 ◽  
Author(s):  
Li-Hsun Chen ◽  
Tsai-Wen Chung ◽  
Bharat D. Narhe ◽  
Chung-Ming Sun
Keyword(s):  
Mechanistic Study ◽  
One Pot ◽  
One Pot Synthesis ◽  
Ultrasound Assisted

Green, Selective, Seedless and One-Pot Synthesis of Triangular Au Nanoplates of Controlled Size Using Bael Gum and Mechanistic Study

2016 ◽  
Vol 4 (7) ◽  
pp. 3830-3839 ◽  
Author(s):  
Sathiya Balasubramanian ◽  
Srinivasa Rao Bezawada ◽  
Dhamodharan Raghavachari
Keyword(s):  
Mechanistic Study ◽  
One Pot ◽  
One Pot Synthesis

scholarly journals One-pot synthesis of sub-10 nm LiNbO3 nanocrystals exhibiting a tunable optical second harmonic response

2019 ◽  
Vol 1 (6) ◽  
pp. 2268-2275 ◽  
Author(s):  
Rana Faryad Ali ◽  
Matthew Bilton ◽  
Byron D. Gates
Keyword(s):  
Second Harmonic ◽  
Optical Response ◽  
Solution Phase ◽  
One Pot ◽  
Phase Synthesis ◽  
Single Crystalline ◽  
Harmonic Response ◽  
One Pot Synthesis ◽  
Solution Phase Synthesis ◽  
Non Linear

Sub-10 nm single-crystalline LiNbO3, nanocrystals that exhibit a tunable non-linear optical response were prepared by a one-pot solution-phase synthesis.

One-Pot Synthesis and Conformational Analysis of 6-Membered Cyclic Iodonium Salts

2020 ◽  
Author(s):  
Lucien Caspers ◽  
Julian Spils ◽  
Mattis Damrath ◽  
Enno Lork ◽  
Boris Nachtsheim
Keyword(s):  
Conformational Analysis ◽  
Bronsted Acids ◽  
One Pot ◽  
Benzyl Alcohols ◽  
Iodonium Salts ◽  
Efficient Approach ◽  
One Pot Synthesis ◽  
Diaryliodonium Salts

In this article we describe an efficient approach for the synthesis of cyclic diaryliodonium salts. The method is based on benzyl alcohols as starting materials and consists of an Friedel-Crafts-arylation/oxidation sequence. Besides a deep optimization, particluar focusing on the choice and ratios of the utilized Bronsted-acids and oxidants, we explore the substrate scope of this transformation. We also discuss an interesting isomerism of cyclic iodonium salts substituted with aliphatic substituents at the bridge head carbon. <br>

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