Step-wise and one-pot synthesis of highly substituted conjugated trienes from 2-oxobenzo[h]chromenes/2H-pyran-2-ones

2021 ◽  
Author(s):  
Amr Elagamy ◽  
Ismail Althagafi ◽  
Ramendra Pratap
Keyword(s):  
One Pot ◽  
Ring Contraction ◽  
One Pot Synthesis ◽  
Conjugated Trienes

The synthesis of conjugated trienes by ring contraction of 2-oxobenzo[h]chromenes/2H-pyran-2-ones followed by decarboxylative rearrangement has been developed.

ChemInform Abstract: A One-Pot Synthesis of (6)(2,5)-Furanophanes by Ring Contraction of (6)(3,6)-Oxepinophanes with Ruthenium Tetroxide.

ChemInform ◽  
1987 ◽  
Vol 18 (47) ◽  
Author(s):  
W. TOCHTERMANN ◽  
K. LUTTMANN ◽  
E.-M. PETERS ◽  
K. PETERS ◽  
H. G. VON SCHNERING
Keyword(s):  
One Pot ◽  
Ring Contraction ◽  
Ruthenium Tetroxide ◽  
One Pot Synthesis

One-pot synthesis of cyclopentadienones through ring contraction of 2H-pyran-2-ones

2004 ◽  
Vol 45 (35) ◽  
pp. 6619-6621 ◽  
Author(s):  
Diptesh Sil ◽  
Ashoke Sharon ◽  
Prakas R. Maulik ◽  
Vishnu Ji Ram
Keyword(s):  
One Pot ◽  
Ring Contraction ◽  
One Pot Synthesis

One-Pot Synthesis of Cyclopentadienones Through Ring Contraction of 2H-Pyran-2-ones.

ChemInform ◽  
2004 ◽  
Vol 35 (50) ◽  
Author(s):  
Diptesh Sil ◽  
Ashoke Sharon ◽  
Prakas R. Maulik ◽  
Vishnu Ji Ram
Keyword(s):  
One Pot ◽  
Ring Contraction ◽  
One Pot 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>

Facile and Convenient Ag/Cd/Cu Nanoparticle Catalysed One-pot Synthesis of Xanthenes

2017 ◽  
Vol 7 (12) ◽  
pp. 1192-1195
Author(s):  
Y. I. Shaikh ◽  
G. M. Nazeruddin ◽  
Khursheed Ahmed
Keyword(s):  
One Pot ◽  
One Pot Synthesis ◽  
Cu Nanoparticle
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