Cerium(IV) sulfate catalyzed one-pot three-component diastereo selective synthesis of 4-amidotetrahydropyrans

2009 ◽  
Vol 87 (6) ◽  
pp. 698-705 ◽  
Author(s):  
Nagarajan Panneer Selvam ◽  
Paramasivan T. Perumal
Keyword(s):  
Ritter Reaction ◽  
Selective Synthesis ◽  
Prins Cyclization ◽  
One Pot ◽  
One Pot Synthesis ◽  
Simple Protocol

A convenient and diastereoselective one-pot synthesis of cis-4-amidotetrahydropyrans is described. This simple protocol involves Prins cyclization of homoallylic alcohol and aldehydes, followed by Ritter reaction of acetonitrile leading to the formation of cis-4-acetamidopyrans in good yields.

HBF4·OEt2 as a versatile reagent for the Hosomi–Sakurai allylation and Prins cyclization: one-pot synthesis of symmetrical 4-fluorotetrahydropyrans

2010 ◽  
Vol 51 (21) ◽  
pp. 2872-2874 ◽  
Author(s):  
J.S. Yadav ◽  
B.V. Subba Reddy ◽  
B. Anusha ◽  
U.V. Subba Reddy ◽  
V.V. Bhadra Reddy
Keyword(s):  
Prins Cyclization ◽  
One Pot ◽  
One Pot Synthesis ◽  
Versatile Reagent

Iodine-catalyzed one-pot synthesis of amides from nitriles via Ritter reaction

2010 ◽  
Vol 51 (21) ◽  
pp. 2813-2819 ◽  
Author(s):  
Palani Theerthagiri ◽  
Appaswami Lalitha ◽  
Pirama Nayagam Arunachalam
Keyword(s):  
Ritter Reaction ◽  
One Pot ◽  
One Pot Synthesis

ChemInform Abstract: Iodine-Catalyzed One-Pot Synthesis of Amides from Nitriles via Ritter Reaction.

ChemInform ◽  
2010 ◽  
Vol 41 (37) ◽  
pp. no-no
Author(s):  
Palani Theerthagiri ◽  
Appaswami Lalitha ◽  
Pirama Nayagam Arunachalam
Keyword(s):  
Ritter Reaction ◽  
One Pot ◽  
One Pot Synthesis

Green recyclable SO3H-carbon catalyst for the selective synthesis of isomannide-based fatty acid monoesters as non-ionic bio-surfactants

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 40997-41005 ◽  
Author(s):  
T. Vijai Kumar Reddy ◽  
G. Sandhya Rani ◽  
R. B. N. Prasad ◽  
B. L. A. Prabhavathi Devi
Keyword(s):  
Fatty Acid ◽  
Solvent Free ◽  
Selective Synthesis ◽  
Carbon Catalyst ◽  
One Pot ◽  
One Pot Synthesis

Solvent free one-pot synthesis of isomannide-based fatty acid monoesters as non-ionic bio-surfactants employing a green recyclable SO3H-carbon catalyst was demonstrated.

Zn(ClO 4 ) 2 ⋅6H 2 O‐Catalyzed One‐Pot Synthesis of Amides via Ritter Reaction with Alcohols, Acetic Anhydride and Nitriles

2018 ◽  
Vol 3 (42) ◽  
pp. 11775-11778 ◽  
Author(s):  
Chengliang Feng ◽  
Bin Yan ◽  
Wenjin Yao ◽  
Junqing Chen ◽  
Min Ji
Keyword(s):  
Acetic Anhydride ◽  
Ritter Reaction ◽  
One Pot ◽  
One Pot Synthesis

scholarly journals One-Pot Synthesis of Cycloparaphenylenes

2020 ◽  
Vol 02 (04) ◽  
pp. 306-312
Author(s):  
Jan H. Griwatz ◽  
Hermann A. Wegner
Keyword(s):  
Transition Metal ◽  
Organic Synthesis ◽  
Organic Materials ◽  
Selective Synthesis ◽  
Coupling Reactions ◽  
Efficient Synthesis ◽  
Reaction Conditions ◽  
One Pot ◽  
One Pot Synthesis

The preparation of cycloparaphenylenes ([n]CPPs) with their bent π-system poses a long-standing challenge in organic synthesis. In the current multi-step approaches to access CPPs, pre-angulated precursors were combined using transition metal-catalysed or mediated coupling reactions. Therefore, there is a long way to the realisation of the idea of an ‘ideal synthesis’. An easy and efficient synthesis of different [n]CPPs would represent a breakthrough, also pushing their incorporation into organic materials. By combining multiple steps in a one-pot approach, the overall time and workload can be drastically shortened. Herein, we present the application of this concept for the preparation of [6] and [9]CPP as a simple and fast alternative to current methods. By tuning the reaction conditions the selective synthesis of both [6] and [9]CPP was demonstrated.

One-Pot Selective Synthesis of Multisubstituted Quinoxalin-2(1H)-ones by a Ugi 4CR/Catalytic Aza-Wittig Sequence

Synlett ◽  
2018 ◽  
Vol 29 (11) ◽  
pp. 1447-1450 ◽  
Author(s):  
Yan-Mei Yan ◽  
Ming-Wu Ding ◽  
Hao-Yang Li ◽  
Jing Ren ◽  
Song Wang
Keyword(s):  
Catalytic Amount ◽  
Selective Synthesis ◽  
One Pot ◽  
One Pot Synthesis ◽  
High Yields

A facile, one-pot synthesis of multisubstituted quinoxalin-2(1H)-ones via a Ugi 4CR/catalytic aza-Wittig sequence has been developed. In the presence of a catalytic amount of 3-methyl-1-phenyl-2-phospholene 1-oxide, the reaction of 2-aminobenzoyl azides, aldehydes, ketoacids, and isocyanides selectively produces quinoxalin-2(1H)-ones as the sole products in high yields.

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