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Browsing by Author "Praveen, P"

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An Easy Access to Fused Chromanones via Rhodium Catalyzed Oxidative Coupling of Salicylaldehydes with Heterobicyclic Olefins

Ajesh, V; Baiju, T V; Jijy, E; Praveen, P; Shimi, M; Nayana, J; Pihko, P M; Sunil, V; Radhakrishnan, K V (Elsevier, 2016-07-07)

Herein we describe a detailed study on the rhodium catalyzed oxidative coupling of salicylaldehydes with heterobicyclic olefins such as diazabicyclic olefins and urea-derived bicyclic olefins. The developed method provides ...
Palladium catalyzed reaction of ortho-functionalized aryl iodides with bicyclic hydrazines: facile route toward heteroannulated cyclopentenes and azabicycles

Jubi John; Rani, R; Sarath Chand, S; Praveen, P; Nayana Joseph; Suresh, E; Radhakrishnan, K V (Elsevier, 2013)

A palladium catalyzed tandem protocol for the synthesis of cyclopentene fused heterocycles from diazabicyclic alkenes and ortho-functionalized aryl iodides has been elaborated. This tandem protocol was utilized for the ...
Palladium-catalyzed interceptive decarboxylative addition of allyl carbonates with carbonyl group

Baiju, T V; Nayana Joseph; Jainu Ajit; Praveen, P; Radhakrishnan, K V; Sunil Varughese; Yamamoto, Y (Georg Thieme Verlag, 2014)

The first palladium-catalyzed interceptive decarboxylative 1,4-addition of allyl carbonates with squarates is reported. Interestingly, the C-3 carbonyl group of N-substituted isatins undergoes smooth decarboxylative ...
Palladium-catalyzed skeletal rearrangement of spirotricyclic olefins: A Facile one-pot strategy for the Synthesis of a novel motif with cyclopentene fused to benzofuran and pyrazolidine

Praveen, P; Jijy, E; Preethanuj, P; Pihko, P M; Sarath Chand, S; Radhakrishnan, K V (Wiley, 2013)
Palladium/Lewis acid mediated domino reaction of pentafulvene derived diazabicyclic olefins: efficient access to spiropentacyclic motif with an indoline and pyrazolidine fused to cyclopentene

Sarath Chand, S; Jijy, E; Praveen, P; Szymoniak, J; Preethanuj, P; Dhanya, B P; Radhakrishnan, K V (American Chemical Society, 2013)

A palladium/Lewis acid mediated stepwise and one-pot transformation of pentafulvene derived diazabicyclic olefins is described. The reaction offers a facile strategy for the synthesis of novel spiropentacyclic motifs with ...
Rhodium catalyzed oxidative coupling of salicylaldehydes with diazabicyclic olefins: a one pot strategy involving aldehyde C-H cleavage and pi-allyl chemistry towards the synthesis of fused ring chromanones

Jijy, E; Praveen, P; Shimi, M; Pihko, P M; Nayana Joseph; Radhakrishnan, K V (Royal Society of Chemistry, 2013)

An efficient one pot strategy for the synthesis of cyclopentene fused chromanone derivatives through the direct oxidative coupling of salicylaldehydes with bicyclic olefins in the presence of a rhodium-copper catalyst ...
Rhodium(III) catalyzed synthesis of isoquinolone fused azabicycles through C-H activation of N-pivaloyloxy benzamides

Praveen, P; Jijy, E; Aparna, P S; Viji, S; Radhakrishnan, K V (Elsevier, 2014)

Herein we describe an efficient one pot strategy toward highly functionalized isoquinolone fused azabicycles having great synthetic potential via C-H activation of N-pivaloyloxy benzamides under very mild conditions. The ...
Rhodium(III)-catalyzed C-H activation of phenylazoles toward C-N bond cleavage of diazabicyclic olefins: A facile access to mono- and biscyclopentenyl-functionalized aza-heteroaromatics

Praveen, P; Aparna, P S; Jijy, E; Santhini, P V; Sunil Varughese; Radhakrishnan, K V (Georg Thieme Verlag, 2014)

A [RhCl2Cp*](2)-catalyzed stereoselective C-N bond cleavage of diazabicyclic olefins via C-H activation of phenylazoles in the presence of an acetate source is described. The developed method provides an easy access to ...
Ruthenium catalyzed desymmetrization of diazabicyclic olefins to access heteroaryl substituted cyclopentenes through C-H activation of phenylazoles

Aparna, P S; Prabha, B; Praveen, P; Jijy, E; Luxmi Varma, R; Radhakrishnan, K V (Elsevier Science, 2014)

The first ruthenium catalyzed redox-neutral C-H activation strategy for the ring-opening of diazabicyclic olefins via C-H bond cleavage of phenyl azoles is reported. The developed method offers a novel route to functionalized ...
Trapping the Lewis acid generated transient species from pentafulvene derived diazanorbornenes with ortho-functionalized aryl iodides and aliphatic alcohols

Sarath Chand, S; Saranya, S; Preethanuj, P; Dhanya, B P; Jijy, E; Praveen, P; Sasidhar, B S; Szymoniak, J; Santhini, P V; Radhakrishnan, K V (Royal Society of Chemistry, 2014)

Herein we describe our efforts on the Lewis acid catalyzed stereoselective ring-opening of pentafulvene derived diazabicyclic olefins using various ortho-functionalized aryl iodides such as 2-iodoanilines, 2-iodophenols ...

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