Nibedita B Dutta

• Chief Technical Officer at Rain Forest Research Institute

A novel sustainable methodology on one-pot cyanoalkylation/cyanoalkenylation of 2-anilino-1,4-naphthoquinones with vinylarenes/arylalkynes and azobis(alkylcarbonitrile)s involving three-component radical cascade path has been achieved. tert-Butylhydroperoxide (TBHP) here acts as an efficient oxidant, and...

Litsea cubeba (Lour.) Pers. is an evergreen, tree of laurel family native to Southeast Asia. In India, the species is found in Eastern Himalayas from Sikkim to Mishmi Hills. The fruit of the plant is a massive source of essential oil (EO) resembling citronella oil. The study explores the variation of EO content of L. cubeba fruit/seeds from 16 diff...

Mallotus nudiflorus (L.) Kulju & Welzen is a medium sized deciduous tree under the family Euphorbiaceae with Nativity from the Himalaya to Hainan Island. In India it is distribution throughout the hotter parts, moist semi-evergreen tropical forests along river and water courses. The plant is traditionally used in Indian Ayurvedic medicine. Lipid cl...

Mallotus nudiflorus (L.) Kulju & Welzen is a medium sized deciduous tree under the family Euphorbiaceae with Nativity from the Himalaya to Hainan Island. In India it is distribution throughout the hotter parts, moist semi-evergreen tropical forests along river and water courses. The plant is traditionally used in Indian Ayurvedic medicine. Lipid cl...

Fluorine chemistry executes a vital role in the agricultural, pharmaceutical, and materials industries. Moreover, introducing fluorine atom and fluorine‐containing groups onto organic compounds can enhance the chemical and physical properties of the parent molecules. Because of this reason, researchers have been putting continuous efforts into deve...

We report an efficient protocol for the synthesis of 3‐trifluoromethylquinoxalin‐2(1H)‐ones, 3‐trifluoromethylimidazo[1,2‐a]pyridines and 3‐(trifluoromethyl)‐2H‐indazoles under metal‐, photocatalyst‐, light‐ and electrochemical‐free conditions. The combination of Langlois’ reagent (sodium triflinate) with the oxidant (NH4)2S2O8 in DMSO: H2O (10 : 1...

Correction for 'tert-Butylhydroperoxide (TBHP) mediated oxidative cross-dehydrogenative coupling of quinoxalin-2(1H)-ones with 4-hydroxycoumarins, 4-hydroxy-6-methyl-2-pyrone and 2-hydroxy-1,4-naphthoquinone under metal-free conditions' by Suraj Sharma et al., Org. Biomol. Chem., 2020, 18, 6537-6548, DOI: .

We report an efficient and atom-economic method of C-3 functionalization reaction of quinoxalin-2(1H)-ones with 4-hydroxycoumarins, 4-hydroxy-6-methyl-2-pyrone, and 2-hydroxy-1,4-naphthoquinone via free radical cross-coupling pathway under metal-free conditions. tert-Butylhydropreoxide (TBHP) smoothly promotes the reaction furnishing the cross-dehy...

Two facile and effective C-3 arylation protocols of quinoxalin-2(1H)-ones with arylhydrazines and aryl boronic acids respectively via free radical cross-coupling reactions under metal-, photocatalyst- and light-free conditions have been unveiled. K2S2O8 has been used as an efficient oxidant to generate aryl radicals from arylhydrazines and aryl bor...

A new solvent cum reagent system comprising of water extract of banana ash and dimethylsulfoxide (WEB‐DMSO) has been engaged for the first time to promote the aldol type condensation reaction of aldehydes with ethyl diazoacetate. The condensation reaction has smoothly undergone producing a range of α‐diazo‐β‐hydroxy esters in good to excellent yiel...

The paper, deals with the utilitarian aspect of the fruits of Dillenia indica Linn.

agarbatti industry in india

Artocarpus chama Buch. Syn. A. chaplasha Linn.( Moraceae), an indigenous fruit of North Eastern (NE) region of India. Samkathal pulp is eaten afresh and possesses high nutritional value. It has also has been reported to contain antioxidant properties. The seeds are also rich source of carbohydrates and proteins and average source of fibre. In spite...

Garcinia pedunculata Roxb. ex Buch.-Ham under the family Clusiaceae. Garcinia pedunculata curries by the people of Assam. It has a number of medicinal properties and used as an antidysenteric. Due to its high Hydroxycitric acid (HCA) content, it spite of such enormous health benefits, the fruits are underutilized due to their seasonal availability...

The present investigation deals with the phytochemical, nutritional and antioxidant activity of the seeds of samkathal (Artocarpus chaplasa). Phytochemistry of the seeds of the fruits revealed the presence of total phenol, flavanoids and alkaloids that contribute to its high antioxidant activity which was evident from 1, l-diphenyl-2-picrylhydrazyl...