Sequential two‐fold Claisen Rearrangement,  One‐pot Ring‐closing Metathesis and Cross‐metathesis as a Route to Substituted Benzo[b]azepine‐2‐one, Benzo[b]azepine and Benzo[b]oxepine Derivatives

2020 ◽  
Author(s):  
Shital K Chattopadhyay ◽  
Shyamasankar Mandal ◽  
Jeet Banerjee ◽  
Sougata Maity
Keyword(s):  
Claisen Rearrangement ◽  
Ring Closing Metathesis ◽  
One Pot ◽  
Cross Metathesis

One-Pot Ring-Closing Metathesis-Alkene Cross Metathesis Reactions of Sulfamide-Linked Enynes

2004 ◽  
Vol 2004 (4) ◽  
pp. 800-806 ◽  
Author(s):  
Sofia S. Salim ◽  
Richard K. Bellingham ◽  
Richard C. D. Brown
Keyword(s):  
Ring Closing Metathesis ◽  
One Pot ◽  
Cross Metathesis ◽  
Metathesis Reactions

One-Pot Ring-Closing Metathesis-Alkene Cross Metathesis Reactions of Sulfamide-Linked Enynes.

ChemInform ◽  
2004 ◽  
Vol 35 (25) ◽  
Author(s):  
Sofia S. Salim ◽  
Richard K. Bellingham ◽  
Richard C. D. Brown
Keyword(s):  
Ring Closing Metathesis ◽  
One Pot ◽  
Cross Metathesis ◽  
Metathesis Reactions

ChemInform Abstract: Synthesis of Spirocyclic Thiazolidinediones Using Ring-Closing Metathesis and One-Pot Sequential Ring-Closing/Cross Metathesis.

ChemInform ◽  
2011 ◽  
Vol 42 (40) ◽  
pp. no-no
Author(s):  
Kalyan Dhara ◽  
Sushovan Paladhi ◽  
Ganesh Chandra Midya ◽  
Jyotirmayee Dash
Keyword(s):  
Ring Closing Metathesis ◽  
One Pot ◽  
Cross Metathesis

scholarly journals A Phosphate Tether-Mediated, One-Pot, Sequential Ring-Closing Metathesis/Cross-Metathesis/Chemoselective Hydrogenation Protocol

2012 ◽  
Vol 14 (10) ◽  
pp. 2634-2637 ◽  
Author(s):  
Phanindra K. M. Venukadasula ◽  
Rambabu Chegondi ◽  
Gregory M. Suryn ◽  
Paul R. Hanson
Keyword(s):  
Ring Closing Metathesis ◽  
One Pot ◽  
Cross Metathesis ◽  
Chemoselective Hydrogenation ◽  
Phosphate Tether

scholarly journals Further exploration of the heterocyclic diversity accessible from the allylation chemistry of indigo

2015 ◽  
Vol 11 ◽  
pp. 481-492 ◽  
Author(s):  
Alireza Shakoori ◽  
John B Bremner ◽  
Mohammed K Abdel-Hamid ◽  
Anthony C Willis ◽  
Rachada Haritakun ◽  
...  
Keyword(s):  
Claisen Rearrangement ◽  
Heterocyclic System ◽  
The Novel ◽  
Ring Closing Metathesis ◽  
One Pot ◽  
Rapid Access ◽  
Directed Synthesis ◽  
Derivatives Of

Diversity-directed synthesis based on the cascade allylation chemistry of indigo, with its embedded 2,2’-diindolic core, has resulted in rapid access to new examples of the hydroxy-8a,13-dihydroazepino[1,2-a:3,4-b']diindol-14(8H)-one skeleton in up to 51% yield. Additionally a derivative of the novel bridged heterocycle 7,8-dihydro-6H-6,8a-epoxyazepino[1,2-a:3,4-b']diindol-14(13H)-one was produced when the olefin of the allylic substrate was terminally disubstituted. Further optimisation also produced viable one-pot syntheses of derivatives of the spiro(indoline-2,9'-pyrido[1,2-a]indol)-3-one (65%) and pyrido[1,2,3-s,t]indolo[1,2-a]azepino[3,4-b]indol-17-one (72%) heterocyclic systems. Ring-closing metathesis of the N,O-diallylic spiro structure and subsequent Claisen rearrangement gave rise to the new (1R,8aS,17aS)-rel-1,2-dihydro-1-vinyl-8H,17H,9H-benz[2',3']pyrrolizino[1',7a':2,3]pyrido[1,2-a]indole-8,17-(2H,9H)-dione heterocyclic system.

scholarly journals Tandem Olefin Metathesis/α-Ketohydroxylation Revisited

Catalysts ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 719
Author(s):  
Michał Patrzałek ◽  
Aleksandra Zasada ◽  
Anna Kajetanowicz ◽  
Karol Grela
Keyword(s):  
Quaternary Ammonium ◽  
Oxidation Process ◽  
Oxidation Catalyst ◽  
Ring Closing Metathesis ◽  
One Pot ◽  
Mild Conditions ◽  
Cross Metathesis ◽  
Metathesis Catalyst ◽  
Tandem Process ◽  
Metathesis Catalysts

EWG-activated and polar quaternary ammonium salt-tagged ruthenium metathesis catalysts have been applied in a two-step one-pot metathesis-oxidation process leading to functionalized α-hydroxyketones (acyloins). In this assisted tandem process, the metathesis catalyst is used first to promote ring-closing metathesis (RCM) and cross-metathesis (CM) steps, then upon the action of Oxone™ converts into an oxidation catalyst able to transform the newly formed olefinic product into acyloin under mild conditions.

Synthesis of spirocyclic thiazolidinediones using ring-closing metathesis and one-pot sequential ring-closing/cross metathesis

2011 ◽  
Vol 9 (10) ◽  
pp. 3801 ◽  
Author(s):  
Kalyan Dhara ◽  
Sushovan Paladhi ◽  
Ganesh Chandra Midya ◽  
Jyotirmayee Dash
Keyword(s):  
Ring Closing Metathesis ◽  
One Pot ◽  
Cross Metathesis

One-Pot Tandem Ring-Opening and Ring-Closing Metathesis Polymerization of Disubstituted Cyclopentenes Featuring a Terminal Alkyne Functionality

2020 ◽  
Vol 53 (11) ◽  
pp. 4330-4337
Author(s):  
Santhosh Kumar Podiyanachari ◽  
Salvador Moncho ◽  
Edward N. Brothers ◽  
Saeed Al-Meer ◽  
Mohammed Al-Hashimi ◽  
...  
Keyword(s):  
Ring Opening ◽  
Terminal Alkyne ◽  
Ring Closing Metathesis ◽  
One Pot ◽  
Metathesis Polymerization
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