1. UGC sponsored national workshop on Recent trends in nanoscience and technology, 2011 during 20th-21st May, 2011 at Bahona College, Jorhat, Assam
2. A novel approach for the synthesis of some a-ring annelated steroidal triazole derivatives
17th ISCBInternational Conference(ISCBC-2012) during 21st-24th
January, 2012 at Solapur University, Solapur
3. A novel approach for the synthesis of 3-substituted heterosteroids.
National Conference onFrontiers in Chemical Sciences (FICS)–2012 during 2nd
-3rd December, 2012atDepartment of Chemistry, IIT Guwahati
4. Microwave-promoted and lewis acid catalysed synthesis of steroidal D-ring fused4, 6-Diarylpyridines.
19thISCBInternational Conference (ISCBC-2013) during 2nd -5th March, 2013 at
Udaipur, Rajasthan
5. Synthesis of steroidal A- and D-ring fused 2, 4-diarylpyrimidines by one-potthree-
component reaction.
International Conference (ISCBC-2014), 2014 during 1st -4th March, 2014 at
University of Delhi, Delhi
6. Synthesis of 7-substituted steroidal pyrazolo[1,5-a]pyrimidine by a one-pot three-
component reaction.
8th Mid-Year CRSI Symposium inChemistry, 2014 during 10th-12th July, 2014 at CSIR-
NEIST, Jorhat, Assam
7. Synthesis of steroidal pyrido[2,3-d]pyrimidine derivatives and related analogues from β –halo-α,β-unsaturated aldehydes
13th Eurasia Conference onChemical Sciences, 2014 during 14th -18th December, 2014 at IISc, Bangalore
8. Carbon-Carbon Bond Cleavage reaction: Synthesis of multi-substituted pyrazolo[1,5-
a]pyrimidine
National Conference on Contemporary Developments in Chemical Science-2015,
during 23rd-24th November, 2015 at Tezpur University, Tezpur, Assam
9. Activity of DABCO:Catalytic Scope in Organic Synthesis
National seminar on Prospects and Challenges of chemical education and research activities in UG colleges of Assam during 30th-31st August, 2016 at Mangaldai College, Mangaldai, Mangaldai, Assam
10. Microwave-promoted synthesis of multi-substituted pyridine through aza Diels–Alder
reaction strategy
20th CRSI National symposium in Chemistry, during 3rd-5th February, 2017 at
Department of Chemistry, Gauhati University, Guwahati, Assam
11. Microwave assisted synthesis: a practical route to green chemistry
UGC sponsored National seminar On RecentTrends in Environment Responsive
Chemical Processes (RTERCP-2017), during 22nd-23rd September, 2017 at Debraj Roy
College, Golaghat, Assam
12. Extraction and Synthesis of bio-platform molecules from waste biomass
ASTEC sponsored Assam Science Festival, during 23-25 March, 2019 at Tezpur University, Tezpur, Assam
13. Solvent free Biginelli reaction for the synthesis of dihydropyrimidine using punica granatum peel as an organocatalyst
National Conference on ‘Recent Advances in Applied Sciences (RAAS’2019), during 17-18 May, 2019 at Gauhati University, Assam
14. Chemistry Webinar Series-I, during 10-11th June, 2020, organized by Department of
Chemistry, University of Science and Technology Meghalaya
15. Week-long webinar series on Biodiversity & Climate change, during 1st-5th June, 2020,
organised by Nature Learning Centre, Assam, Climate Change Cell, Assam and Assam
Climate Change Management Society, on the occasion of World Environment Day, 2020.