scholarly journals Enantioselective direct Mannich-type reactions of 2-benzylpyridine N-oxides catalyzed by chiral bis(guanidino)iminophosphorane organosuperbase

2018 ◽  
Vol 9 (18) ◽  
pp. 4348-4351 ◽  
Author(s):  
Qiupeng Hu ◽  
Azusa Kondoh ◽  
Masahiro Terada
Keyword(s):  
Base Catalysis ◽  
Addition Reactions ◽  
Brønsted Base ◽  
Enantioselective Addition ◽  
First Time

2-Benzylpyridine N-oxides possessing less acidic α-protons were utilized as pronucleophiles for the first time in enantioselective addition reactions under Brønsted base catalysis.

Enantioselective addition of selenosulfonates to α,β-unsaturated ketones

2018 ◽  
Vol 16 (16) ◽  
pp. 2893-2901 ◽  
Author(s):  
Shilong Luo ◽  
Nan Zhang ◽  
Zhen Wang ◽  
Hailong Yan
Keyword(s):  
Unsaturated Ketones ◽  
Enantioselective Addition ◽  
First Time

An efficient organo-catalyzed enantioselective addition of selenosulfonates to α,β-unsaturated ketones was developed for the first time.

scholarly journals Enantioselective Addition of Alkynyl Ketones to Nitroolefins Assisted by Brønsted Base/H‐Bonding Catalysis

2019 ◽  
Vol 25 (17) ◽  
pp. 4390-4397 ◽  
Author(s):  
Teresa E. Campano ◽  
Igor Iriarte ◽  
Olatz Olaizola ◽  
Julen Etxabe ◽  
Antonia Mielgo ◽  
...  
Keyword(s):  
Brønsted Base ◽  
Enantioselective Addition

Enantioselective Formal [3+2] Cycloaddition of Epoxides with Imines under Brønsted Base Catalysis: Synthesis of 1,3-Oxazolidines with Quaternary Stereogenic Center

2018 ◽  
Vol 130 (21) ◽  
pp. 6407-6411 ◽  
Author(s):  
Azusa Kondoh ◽  
Shiori Akahira ◽  
Masafumi Oishi ◽  
Masahiro Terada
Keyword(s):  
Base Catalysis ◽  
Brønsted Base ◽  
Stereogenic Center

Catalytic Enantioselective Synthesis of Tertiary Thiols From 5H-Thiazol-4-ones and Nitroolefins: Bifunctional Ureidopeptide-Based Brønsted Base Catalysis

2013 ◽  
Vol 125 (45) ◽  
pp. 12062-12067 ◽  
Author(s):  
Saioa Diosdado ◽  
Julen Etxabe ◽  
Joseba Izquierdo ◽  
Aitor Landa ◽  
Antonia Mielgo ◽  
...  
Keyword(s):  
Enantioselective Synthesis ◽  
Base Catalysis ◽  
Brønsted Base

scholarly journals Transition State Analysis of Enantioselective Brønsted Base Catalysis by Chiral Cyclopropenimines

2014 ◽  
Vol 136 (30) ◽  
pp. 10700-10707 ◽  
Author(s):  
Jeffrey S. Bandar ◽  
Gregory S. Sauer ◽  
William D. Wulff ◽  
Tristan H. Lambert ◽  
Mathew J. Vetticatt
Keyword(s):  
Transition State ◽  
Base Catalysis ◽  
Brønsted Base ◽  
State Analysis

Insights into highly selective ring expansion of oxaziridines under Lewis base catalysis: a DFT study

2019 ◽  
Vol 6 (5) ◽  
pp. 679-687 ◽  
Author(s):  
Qiao-Chu Zhang ◽  
Xue Li ◽  
Xinghua Wang ◽  
Shi-Jun Li ◽  
Ling-Bo Qu ◽  
...  
Keyword(s):  
Ring Expansion ◽  
Lewis Base ◽  
Base Catalysis ◽  
Dft Study ◽  
Ring Expansion Reaction ◽  
First Time

The possible mechanism and stereoselectivity of the NHC-catalyzed ring expansion reaction of oxaziridines have been theoretically studied for the first time.

Directing the Activation of Donor-Acceptor Cyclopropanes Towards Stereoselective 1,3-Dipolar Cycloaddition Reactions by Brønsted Base Catalysis

2017 ◽  
Vol 56 (39) ◽  
pp. 11831-11835 ◽  
Author(s):  
Jakob Blom ◽  
Andreu Vidal-Albalat ◽  
Julie Jørgensen ◽  
Casper L. Barløse ◽  
Kamilla S. Jessen ◽  
...  
Keyword(s):  
Base Catalysis ◽  
Dipolar Cycloaddition ◽  
Cycloaddition Reactions ◽  
Donor Acceptor ◽  
Brønsted Base
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