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India

USD 40 /hr

PhD and postdoctoral researcher specializing in organic synthesis and peptide chemistry, with over a decade of experienc

Profile Summary

I am a PhD and postdoctoral researcher specializing in organic synthesis and peptide chemistry, with over a decade of experience in the design, synthesis, and route development of bioactive molecules. My work has supported multiple publications and contributed to early-stage drug candidate development. I now offer high-quality consulting and research support for pharmaceutical and biotech clients, with a focus on novel small-molecule synthesis, peptide-based compounds, and comprehensive literature reviews. I also support groundbreaking ideas by providing scientifically sound implementation plans that bridge innovative concepts with practical execution.

Subject Matter Expertise

• ★ Organic Chemistry
• ★ Retrosynthesis
• ★ Peptide Synthesis
• ☆ Inorganic Chemistry
• ☆ Natural Product Chemistry
• ☆ Physical Chemistry
• ☆ Polymer Chemistry
• ☆ Physical Organic Chemistry

Services

• Writing
• Research
• Consulting
• Product Development

Writing Technical Writing

Research Scientific and Technical Research, Systematic Literature Review

Consulting Scientific and Technical Consulting

Product Development Material Sourcing, Quality Assurance & Control (QA/QC), Concept Development

Work Experience

PostDoc

Technion Israel Institute of Technology

November 2019 - March 2022

PostDoc

University of Hyderabad

July 2017 - October 2019

Education

Ph.D (chemistry)

Banaras Hindu University

October 2011 - Present

Certifications

• certificate by CSIR

  CSIR/SERB/UGC

  January 2012 - Present

Publications

JOURNAL ARTICLE

Rajeshwer Vanjari, Deepanjan Panda, Shaswati Mandal, Ganga B. Vamisetti, Ashraf Brik(2022). Gold(I)-Mediated Rapid Cyclization of Propargylated Peptides via Imine Formation . Journal of the American Chemical Society. 144. (11). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 4966--4976. American Chemical Society ({ACS})

Rajeshwer Vanjari, Shubham Dutta, Shengwen Yang, Vincent Gandon, Akhila K. Sahoo(2022). Palladium-Catalyzed Regioselective Arylalkenylation of Ynamides . Organic Letters. American Chemical Society ({ACS})

Rajeshwer Vanjari, Emad Eid, Ganga B. Vamisetti, Shaswati Mandal, Ashraf Brik(2021). Highly Efficient Cyclization Approach of Propargylated Peptides via Gold(I)-Mediated Sequential C–N, C–O, and C–C Bond Formation . ACS Central Science. American Chemical Society ({ACS})

Rajeshwer Vanjari and Emad Eid and Ganga B. Vamisetti and Shaswati Mandal and Ashraf Brik(2021). Highly Efficient Cyclization Approach of Propargylated Peptides via Gold(I)-Mediated Sequential C–N, C–O, and C–C Bond Formation . ACS Central Science. American Chemical Society ({ACS})

Rajeshwer Vanjari, Manash Protim Gogoi, B. Prabagar, Shengwen Yang, Shubham Dutta, Rajendra K. Mallick, Vincent Gandon, Akhila K. Sahoo(2021). Yb(iii)-catalysed syn-thioallylation of ynamides . Chemical Communications. Royal Society of Chemistry ({RSC})

Rajeshwer Vanjari, Shubham Dutta, Shengwen Yang, Rajendra K. Mallick, Vincent Gandon, Akhila K. Sahoo(2020). Keteniminium‐Driven Umpolung Difunctionalization of Ynamides . Angewandte Chemie International Edition. 59. (27). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 10785--10790. Wiley

Rajeshwer Vanjari, Shubham Dutta, Shengwen Yang, Rajendra K. Mallick, Vincent Gandon, Akhila K. Sahoo(2020). Keteniminium‐Driven Umpolung Difunctionalization of Ynamides . Angewandte Chemie. 132. (27). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 10877--10882. Wiley

Rajeshwer Vanjari, Shubham Dutta, B. Prabagar, Vincent Gandon, Akhila K. Sahoo(2020). An unconventional sulfur-to-selenium-to-carbon radical transfer: chemo-and regioselective cyclization of yne-ynamides . Green Chemistry. Royal Society of Chemistry ({RSC})

Rajeshwer Vanjari, Shubham Dutta, B. Prabagar, Vincent Gandon, Akhila K. Sahoo(2019). Ring Expansion and 1,2‐Migration Cascade of Benzisoxazoles with Ynamides: Experimental and Theoretical Studies . Chemistry – An Asian Journal. 14. (24). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 4828--4836. Wiley

Rajeshwer Vanjari, Rajendra K. Mallick, Shubham Dutta, Arnaud Voituriez, Akhila K. Sahoo(2019). Thioarylative Radical Cyclization of Yne-Dienone . The Journal of Organic Chemistry. 84. (16). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 10509--10517. American Chemical Society ({ACS})

Mallick, R.K., Dutta, S., Vanjari, R., Voituriez, A., Sahoo, A.K.(2019). Thioarylative Radical Cyclization of Yne-Dienone . Journal of Organic Chemistry. 84. (16). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 10509-10517.

Vanjari, R., Dutta, S., Prabagar, B., Gandon, V., Sahoo, A.K.(2019). Ring Expansion and 1,2-Migration Cascade of Benzisoxazoles with Ynamides: Experimental and Theoretical Studies . Chemistry - An Asian Journal. 14. (24). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 4828-4836.

Rajeshwer Vanjari, Shubham Dutta, Manash P. Gogoi, Vincent Gandon, Akhila K. Sahoo(2018). Gold-Catalyzed syn-1,2-Difunctionalization of Ynamides via Nitrile Activation . Organic Letters. 20. (24). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 8077--8081. American Chemical Society ({ACS})

Vanjari, R., Dutta, S., Gogoi, M.P., Gandon, V., Sahoo, A.K.(2018). Gold-Catalyzed syn-1,2-Difunctionalization of Ynamides via Nitrile Activation . Organic Letters. 20. (24). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 8077-8081.

Rajeshwer Vanjari, Tirumaleswararao Guntreddi, Krishna Nand Singh (2016). Palladium‐Catalyzed Site‐Selective C−H Functionalization of Weakly Coordinating Sulfonamides: Synthesis of Biaryl Sulfonamides . Chemistry – An Asian Journal.

Rajeshwer Vanjari, Krishna Nand Singh, Tirumaleswararao Guntreddi(2016). Palladium Catalysed Site Selective C-H Functionalization of Weak Coordinating Sulfonamides: Synthesis of Biaryl Sulfonamides . Chem. Asian J. Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString n/a--n/a. Wiley-Blackwell

Vanjari, R., Guntreddi, T., Singh, K.N.(2016). Palladium-Catalyzed Site-Selective C-H Functionalization of Weakly Coordinating Sulfonamides: Synthesis of Biaryl Sulfonamides . Chemistry - An Asian Journal. 11. (5). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 696-699.

Guntreddi, T., Vanjari, R., Kumar, S., Singh, R., Singh, N., Kumar, P., Singh, K.N.(2016). Elemental sulfur mediated synthesis of benzoxazoles, benzothiazoles and quinoxalines: Via decarboxylative coupling of 2-hydroxy/mercapto/amino-anilines with cinnamic acids . RSC Advances. 6. (84). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 81013-81016.

Kumar, S., Vanjari, R., Guntreddi, T., Singh, K.N.(2016). Sulfur promoted decarboxylative thioamidation of carboxylic acids using formamides as amine proxy . Tetrahedron. 72. (16). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 2012-2017.

Rajeshwer Vanjari, Tirumaleswararao Guntreddi, Krishna Nand Singh(2015). Elemental Sulfur Mediated Decarboxylative Redox Cyclization Reaction of o -Chloronitroarenes and Arylacetic Acids . Org. Lett. 17. (4). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 976--978. American Chemical Society ({ACS})

Guntreddi, T., Vanjari, R., Singh, K.N.(2015). Elemental sulfur mediated decarboxylative redox cyclization reaction of o -chloronitroarenes and arylacetic acids . Organic Letters. 17. (4). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 976-978.

Rajeshwer Vanjari, Saurabh Kumar, Tirumaleswararao Guntreddi, Krishna Nand Singh(2015). Copper catalysed C–N bond formation via a sequential acylation and deacylation process: a novel strategy for the synthesis of benzanilides . RSC Adv. 5. (13). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 9920--9924. Royal Society of Chemistry ({RSC})

Kumar, S., Vanjari, R., Guntreddi, T., Singh, K.N.(2015). Copper catalysed C-N bond formation via a sequential acylation and deacylation process: A novel strategy for the synthesis of benzanilides . RSC Advances. 5. (13). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 9920-9924.

Rajeshwer Vanjari, Tirumaleswararao Guntreddi, Saurabh Kumar, Krishna Nand Singh(2015). Sulphur promoted C(sp 3 )–C(sp 2 ) cross dehydrogenative cyclisation of acetophenone hydrazones with aldehydes: efficient synthesis of 3,4,5-trisubstituted 1H-pyrazoles . Chem. Commun. 51. (2). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 366--369. Royal Society of Chemistry ({RSC})

Rajeshwer Vanjari, Krishna Nand Singh(2015). Utilization of methylarenes as versatile building blocks in organic synthesis . Chem. Soc. Rev. 44. (22). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 8062--8096. Royal Society of Chemistry ({RSC})

Vanjari, R., Guntreddi, T., Kumar, S., Singh, K.N.(2015). Sulphur promoted C(sp ³ )-C(sp ² ) cross dehydrogenative cyclisation of acetophenone hydrazones with aldehydes: Efficient synthesis of 3,4,5-trisubstituted 1H-pyrazoles . Chemical Communications. 51. (2). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 366-369.

Vanjari, R., Singh, K.N.(2015). Utilization of methylarenes as versatile building blocks in organic synthesis . Chemical Society Reviews. 44. (22). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 8062-8096.

Rajeshwer Vanjari, Tirumaleswararao Guntreddi, Krishna Nand Singh(2014). Decarboxylative Thioamidation of Arylacetic and Cinnamic Acids: A New Approach to Thioamides . Org. Lett. 16. (14). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 3624--3627. American Chemical Society ({ACS})

Rajeshwer Vanjari, Tirumaleswararao Guntreddi, Krishna Nand Singh(2014). Direct conversion of methylarenes into dithiocarbamates, thioamides and benzyl esters . Tetrahedron. 70. (25). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 3887--3892. Elsevier {BV}

Rajeshwer Vanjari, Tirumaleswararao Guntreddi, Krishna Nand Singh(2014). Direct conversion of methylarenes into dithiocarbamates, thioamides and benzyl esters . Tetrahedron. 70. (25). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 3887--3892. Elsevier {BV}

Rajeshwer Vanjari, Tirumaleswararao Guntreddi, Krishna Nand Singh(2014). AIBN-initiated metal free amidation of aldehydes using N-chloroamines . Green Chem. 16. (1). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 351--356. Royal Society of Chemistry ({RSC})

Vanjari, R., Guntreddi, T., Singh, K.N.(2014). AIBN-initiated metal free amidation of aldehydes using N-chloroamines . Green Chemistry. 16. (1). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 351-356.

Guntreddi, T., Vanjari, R., Singh, K.N.(2014). Decarboxylative thioamidation of arylacetic and cinnamic acids: A new approach to thioamides . Organic Letters. 16. (14). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 3624-3627.

Guntreddi, T., Vanjari, R., Singh, K.N.(2014). Direct conversion of methylarenes into dithiocarbamates, thioamides and benzyl esters . Tetrahedron. 70. (25). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 3887-3892.

Rajeshwer Vanjari, Tirumaleswararao Guntreddi, Krishna Nand Singh(2013). MnO 2 Promoted Sequential C–O and C–N Bond Formation via C–H Activation of Methylarenes: A New Approach to Amides . Org. Lett. 15. (18). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 4908--4911. American Chemical Society ({ACS})

Rajeshwer Vanjari, Bharat Kumar Allam, Krishna Nand Singh(2013). A novel and simple transamidation of carboxamides in 1,4-dioxane without a catalyst . Tetrahedron Letters. 54. (20). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 2553--2555. Elsevier {BV}

Vanjari, R., Allam, B.K., Singh, K.N.(2013). A novel and simple transamidation of carboxamides in 1,4-dioxane without a catalyst . Tetrahedron Letters. 54. (20). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 2553-2555.

Vanjari, R., Kumar Allam, B., Nand Singh, K.(2013). Hypervalent iodine catalyzed transamidation of carboxamides with amines . RSC Advances. 3. (6). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 1691-1694.

Rajeshwer Vanjari, Bharat Kumar Allam, Krishna Nand Singh(2013). Hypervalent iodine catalyzed transamidation of carboxamides with amines . RSC Adv. 3. (6). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 1691--1694. Royal Society of Chemistry ({RSC})

Vanjari, R., Guntreddi, T., Singh, K.N.(2013). MnO<inf>2</inf> promoted sequential C-O and C-N bond formation via C-H activation of methylarenes: A new approach to amides . Organic Letters. 15. (18). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 4908-4911.