Triflic Acid as an Efficient Brønsted Acid Promoter for the Umpolung of N-Ac Indoles in Hydroarylation Reactions

2017 ◽  
Vol 360 (1) ◽  
pp. 161-172 ◽  
Author(s):  
Raj Kumar Nandi ◽  
Alejandro Perez-Luna ◽  
Didier Gori ◽  
Rodolphe Beaud ◽  
Régis Guillot ◽  
...  
Keyword(s):  
Bronsted Acid ◽  
Brønsted Acid ◽  
Triflic Acid ◽  
Brönsted Acid

Synthesis of tertiary amines by direct Brønsted acid catalyzed reductive amination

2020 ◽  
Vol 56 (61) ◽  
pp. 8691-8694
Author(s):  
Mohanad A. Hussein ◽  
An H. Dinh ◽  
Vien T. Huynh ◽  
Thanh Vinh Nguyen
Keyword(s):  
Carbonyl Compounds ◽  
Reductive Amination ◽  
Bronsted Acid ◽  
Tertiary Amines ◽  
Brønsted Acid ◽  
Triflic Acid ◽  
Brönsted Acid ◽  
Acid Catalyzed

Triflic acid efficiently promotes the reductive amination reactions of carbonyl compounds on a broad range of substrates.

Brønsted acid-catalysed intramolecular hydroamination of unactivated alkenes: metal triflates as an in situ source of triflic acid

2017 ◽  
Vol 46 (9) ◽  
pp. 2884-2891 ◽  
Author(s):  
Junqi Chen ◽  
Sarah K. Goforth ◽  
Bradley A. McKeown ◽  
T. Brent Gunnoe
Keyword(s):  
Catalyst Precursor ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Triflic Acid ◽  
Brönsted Acid ◽  
Metal Triflates

Hydroamination of alkenes using metal triflates occurs via the production of triflic acid, which serves as a catalyst precursor.

scholarly journals Brønsted acid-promoted azide–olefin [3 + 2] cycloadditions for the preparation of contiguous aminopolyols: The importance of disiloxane ring size to a diastereoselective, bidirectional approach to zwittermicin A

2010 ◽  
Vol 6 ◽  
pp. 1206-1210 ◽  
Author(s):  
Hubert Muchalski ◽  
Ki Bum Hong ◽  
Jeffrey N Johnston
Keyword(s):  
Dipolar Cycloaddition ◽  
Ring Size ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Triflic Acid ◽  
Synthesis Strategy ◽  
Brönsted Acid ◽  
Zwittermicin A

We report the first study of substrate-controlled diastereoselection in a double [3 + 2] dipolar cycloaddition of benzyl azide with α,β-unsaturated imides. Using a strong Brønsted acid (triflic acid) to activate the electron deficient imide π-bond, high diastereoselection was observed provided that a 1,1,3,3-tetraisopropoxydisiloxanylidene group (TIPDS) is used to restrict the conformation of the central 1,3-anti diol. This development provides a basis for a stereocontrolled approach to the aminopolyol core of (−)-zwittermicin A using a bidirectional synthesis strategy.

scholarly journals Solventless Sol-Gel Chemistry Through Ring-Opening Polymerization of Bridged Disilaoxacyclopentanes

2000 ◽  
Vol 628 ◽  
Author(s):  
Kamyar Rahimian ◽  
Douglas A. Loy
Keyword(s):  
Ring Opening ◽  
Sol Gel ◽  
Ring Opening Polymerization ◽  
Inorganic Materials ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Organic Base ◽  
Triflic Acid ◽  
Brönsted Acid

Ring-opening polymerization (ROP) of disilaoxacyclopentanes has proven to be an excellent approach to sol-gel type hybrid orgainc-inorganic materials [1]. These materials have shown promise as precursors for encapsulation and microelectronics applications (Figure 1). The polymers are highly crosslinked and are structurally similar to traditional sol-gels, but unlike typical sol-gels they are prepared by an organic base or Bronsted acid (formic or triflic acid), without the use of solvents and water, they have low VOC's and show little shrinkage during processing.

Solvent-Free Acetalization of Glycerol with n-Octanal using Combined Brønsted Acid-Surfactant Catalyst

2017 ◽  
Vol 54 (1) ◽  
pp. 54-63 ◽  
Author(s):  
Xu Li ◽  
Lan Wu ◽  
Qiong Tang ◽  
Jinxiang Dong
Keyword(s):  
Solvent Free ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Brönsted Acid

Synthetic Scope of Brønsted Acid-Catalyzed Reactions of Carbonyl Compounds and Ethyl Diazoacetate

2021 ◽  
Author(s):  
Mizzanoor Rahaman ◽  
M. Shahnawaz Ali ◽  
Khorshada Jahan ◽  
Damon Hinz ◽  
Jawad Bin Belayet ◽  
...  
Keyword(s):  
Carbonyl Compounds ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Ethyl Diazoacetate ◽  
Brönsted Acid ◽  
Acid Catalyzed ◽  
Catalyzed Reactions

scholarly journals Tailoring Lewis/Brønsted acid properties of MOF nodes via hydrothermal and solvothermal synthesis: simple approach with exceptional catalytic implications

2021 ◽  
Author(s):  
Sergio Rojas-Buzo ◽  
Benjamin Bohigues ◽  
Christian W. Lopes ◽  
Débora M. Meira ◽  
Mercedes Boronat ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Active Site ◽  
Solvothermal Synthesis ◽  
Simple Approach ◽  
Organic Reactions ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Acid Properties ◽  
Brönsted Acid

The Brønsted/Lewis acid properties of Hf-MOF-808 can be tuned by simply controlling the solvent employed in its synthesis, with direct catalytic implications on the activity and selectivity of organic reactions sensitive to the active site nature.

Brønsted Acid-Catalyzed Friedel-Crafts-type Alkylation of Arenes with αAryl Diazoacetates

2021 ◽  
pp. 152751
Author(s):  
Wenming Chen ◽  
Guifang Chen ◽  
Biao Wang ◽  
Wei Wang ◽  
Wei Huang ◽  
...  
Keyword(s):  
Bronsted Acid ◽  
Brønsted Acid ◽  
Brönsted Acid ◽  
Acid Catalyzed
Sign in / Sign up

Export Citation Format

Share Document