Search Results - "MAYA SHANKAR SINGH"

Transition‐Metal‐Free One‐Pot [3+3] Heteroannulative Coupling of Thioamides with Epichlorohydrin: Access to Diverse 1,3‐Thiazinanes by Yadav, Dhananjay, Shankar Singh, Maya

“…An operationally simple and efficient cascade approach to access a series of 1,3‐thiazinanes has been developed through intermolecular [3+3] heteroannulative…”
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Aromatic C(sp2)−H Functionalization by Consecutive Paired Electrolysis: Dibromination of Aryl Amines with Dibromoethane at Room Temperature by Shukla, Gaurav, Singh, Malkeet, Kumar Yadav, Anup, Shankar Singh, Maya

“…Herein, we disclose a facile and efficient electrochemical method for the dibromination of aryl amines by double functionalization of aromatic C(sp2)−H (both…”
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Reagent‐Controlled Chemodivergent Approach to Thiazolines and Thiazines from α‐N‐Hydroxyimino Dithioesters by Ray, Subhasish, Singh, Saurabh, Kumar, Ganesh, Shukla, Gaurav, Shankar Singh, Maya

“…A chemoselective route to thiazolines and thiazines has been devised by heterocyclization of viable α‐N‐hydroxyimino‐β‐oxodithioesters with 2‐chloroethylamine…”
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One-Pot Two-Component [3 + 2] Cycloaddition/Annulation Protocol for the Synthesis of Highly Functionalized Thiophene Derivatives by Nandi, Ganesh Chandra, Samai, Subhasis, Singh, Maya Shankar

“…An efficient and experimentally rapid protocol for the synthesis of hitherto unreported 2,3-dicarboalkoxy-4-aroyl/heteroaroyl/alkanoyl thiophenes has been…”
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Progress in 1,3-dipolar cycloadditions in the recent decade: an update to strategic development towards the arsenal of organic synthesis by Singh, Maya Shankar, Chowdhury, Sushobhan, Koley, Suvajit

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Visible‐Light‐Driven Photocatalyst‐ and Additive‐Free Cross‐Coupling of β‐Ketothioamides with α‐Diazo 1,3‐Diketones: Access to Highly Functionalized Thiazolines by Ansari, Monish Arbaz, Yadav, Dhananjay, Singh, Maya Shankar

“…A photocatalyst‐ and additive‐free, visible‐light‐mediated chemoselective domino protocol was devised to access fully substituted thiazoline derivatives from…”
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Metal-Free One-Pot Annulative Coupling of 2‑Hydroxybenzaldehydes with β‑Ketothioamides: Access to Diverse 2‑Arylimino‑2H‑Chromenes by Pali, Pragya, Yadav, Dhananjay, Sahoo, Subash C., Shankar Singh, Maya

“…A concise and practical one-pot sustainable approach for expedient synthesis of 2-arylimino-2H-chromenes by two-component cascade [4 + 2] annulative coupling…”
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Metal‐ and Additive‐Free One‐Pot Synthesis of 2,3,5‐Trisubstituted 1,3,4‐Thiadiazines Using β‐Ketodithioesters and 2‐Bromohydrazones through a Cross‐Coupling/Cyclization Cascade by Singh, Malkeet, Singh, Saurabh, Shukla, Gaurav, Shankar Singh, Maya

“…Abstract Privileged 2,3,5‐trisubstituted 1,3,4‐thiadiazines were synthesized from readily accessible β‐ketodithioesters as a two‐atom (CS) synthon and…”
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Electrochemical Hydroxylation of α‐Bromoacetophenones: Access to α‐Hydroxyacetophenones by Singh, Saurabh, Ray, Subhasish, Shukla, Gaurav, Singh, Malkeet, Singh, Maya Shankar

“…Herein, a new method has been developed for the synthesis of various α‐hydroxyacetophenones via an electro‐oxidation process. It involves electrocatalytic…”
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Recent advances in InCl3-catalyzed one-pot organic synthesis by Singh, Maya Shankar, Raghuvanshi, Keshav

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Access to Nitrones from Amines via Electrocatalysis at Room Temperature by Shukla, Gaurav, Yadav, Dhananjay, Singh, Saurabh, Shankar Singh, Maya

“…A self‐enabled electrooxidative protocol for the synthesis of nitrones from bench stable amines has been developed under constant current electrolysis at room…”
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One‐Pot Access to Tetrasubstituted 2‐Aminothiophenes via Regio‐ and Chemoselective Domino Reactions of Dithioesters with Fumaronitrile at Room Temperature by Yadav, Anup Kumar, Kumar, Vipin, Pali, Pragya, Ray, Subhasish, Verma, Abhineet, Singh, Maya Shankar

“…Herein, we report a one‐pot viable protocol to synthesize tetrasubstituted 2‐aminothiophenes engaging readily accessible α‐enolic dithioesters and abundant…”
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Site‐Specific S‐Allylation of α‐Enolic Dithioesters with Morita‐Baylis‐Hillman Acetates at Room Temperature: Precursor for Thiopyrans by Soni, Sonam, Koley, Suvajit, Ansari, Monish A., Singh, Maya Shankar

“…An efficient one‐pot allylic alkylation of α‐enolic dithioesters (DTEs) with Morita‐Baylis‐Hillman (MBH) acetates has been devised in ethanol at room…”
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One‐Pot Mitsunobu Protocol to Access Ketene S,S‐/N,S‐Acetals at Room Temperature by Saha, Priya, Ansari, Monish Arbaz, Shukla, Gaurav, Singh, Maya Shankar

“…With unique chemical reactivity, α‐oxoketene S,S‐ and N,S‐acetals have attracted enormous attention in the past decades, whereas limited reports exist for…”
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Biginelli and Hantzsch-Type Reactions Leading to Highly Functionalized Dihydropyrimidinone, Thiocoumarin, and Pyridopyrimidinone Frameworks via Ring Annulation with β-Oxodithioesters by Nandi, Ganesh Chandra, Samai, Subhasis, Singh, Maya Shankar

“…An efficient and highly convergent route to dihydropyrimidinones (DHPMs) and hitherto unreported dihydropyridopyrimidinones has been developed by one-pot,…”
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Metal‐Free [2+3] Dipolar Cycloaddition/Denitration Cascade between Nitroalkenes and α‐Diazoesters: Regioselective Access to Functionalized NH−Pyrazoles by Kumar, Ganesh, Ray, Subhasish, Saha, Satyen, Shankar Singh, Maya

“…An efficient one‐pot synthesis of 1H‐pyrazoles has been realized via cascade cyclocondensation of β‐nitroalkenes as C2 synthon with α‐diazoesters as C1N2 unit…”
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Catalyst‐Free One‐Pot Access to Pyrazoles and Disulfide‐Tethered Pyrazoles via Deamidative Heteroannulation of β‐Ketodithioesters with Semicarbazide Hydrochloride in Water by Koley, Suvajit, Panja, Sumit Kumar, Soni, Sonam, Singh, Maya Shankar

“…An operationally simple, mild, and catalyst‐free one‐pot protocol to access privileged pyrazoles and disulfide‐tethered pyrazoles has been devised by [3+2]…”
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l-Proline catalyzed synthesis of densely functionalized pyrido[2,3- d]pyrimidines via three-component one-pot domino Knoevenagel aza-Diels–Alder reaction by Samai, Subhasis, Chandra Nandi, Ganesh, Chowdhury, Sushobhan, Singh, Maya Shankar

“…Highly functionalized hitherto unreported pyrido[2,3- d]pyrimidines have been concisely synthesized in good yields via l-proline catalyzed one-pot…”
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Solvent-free sonochemical one-pot three-component synthesis of 2H-indazolo[2,1-b]phthalazine-1,6,11-triones and 1H-pyrazolo[1,2-b]phthalazine-5,10-diones by Shukla, Gaurav, Verma, Rajiv K., Verma, Girijesh K., Singh, Maya Shankar

“…A rapid and efficient one-pot three-component protocol for the synthesis of 2H-indazolo[2,1-b]phthalazine-1,6,11-triones 4 and…”
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Highly convergent one-pot four-component regioselective synthesis of 4H-benzo [f]chromenes via annulation of β-oxodithioesters by SAMAI, Subhasis, GANESH CHANDRA NANDI, MAYA SHANKAR SINGH

“…Highly efficient regioselective protocol for the synthesis of hitherto unreported 4H-benzo[f]chromenes has been developed by one-pot four-component coupling of…”
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