Senior Scientist - Med Chem @Pfizer | Alum of @nagiblab at @OSU_CBC | Trust in God | DEI & Outreach Supporter

Joined August 2019
Grateful for a successful defense, and I’m extremely excited to share (super late announcement 😅) that I’ll be joining the Pfizer - La Jolla team as a Senior Scientist
74
88
15
1,581
I’m looking forward to all the great talks and interactions at #ACSSpring2025. I’ll be presenting a poster on Wednesday evening. Swing by!😁 #ACSSanDiego
1
3
1,248
Raymond Twumasi 🇬🇭 retweeted
Are you #team_abstraction or #team_substitution to break C-Cl bonds? Check out work by Samir, Imma, and Blaise in @angew_chem on an electrocatalytic system that can switch between these mechanisms to functionalize unactivated chloroalkanes. tinyurl.com/mr4yf55y
13
5
99
17,273
Impressive work
Ever wanted a cross-metathesis … but with carbonyls? Check out Prof @LuminZhang123’s last discovery before starting his own lab at SIOC … in @NatureChemistry nature.com/articles/s41557-0… It’s like a reverse ozonolysis!
3
1,117
Raymond Twumasi 🇬🇭 retweeted
Nagib Lab is officially in San Francisco! #ACSFall2023
1
4
91
7,621
Raymond Twumasi 🇬🇭 retweeted
Super paper in @OPRD_ACS by my #PfizerChemistry colleagues in Process chem developing a hydrogen free debenzylation By enabling a Ni-catalyzed cross coupling with MeMgBr to spin off ethyl benzene! Great use of an inverse reaction strategy doi.org/10.1021/acs.oprd.3c0…
10
1
55
4,705
Congrats @nagiblab
Incredibly honored to be 1 of 3 chemists selected for the 2023 Brown Investigator Award!   🙏 Thank you to the Brown Science Foundation for celebrating mid-career scientists in this transformative way 🙏
1
744
Raymond Twumasi 🇬🇭 retweeted
Last week, we held our annual Paper of the Year meeting, during which we celebrated the great chemistry published in 2022. This year’s winner was the @nagiblab’s Carbene Reactivity from Alkyl and Aryl Aldehydes science.org/doi/10.1126/scie…
2
19
2
189
20,803
Raymond Twumasi 🇬🇭 retweeted
A wonderful paper out now in @OPRD_ACS from the #PfizerChemistry team detailing the work that went into Lufotrelvir which was under development alongside Nirmatrelvir/Paxlovid - just amazing work done on compressed timelines during lockdowns doi.org/10.1021/acs.oprd.2c0…
4
12
2
71
21,082
Raymond Twumasi 🇬🇭 retweeted
The 2021 Organic Chemistry Editors' Choice Award was awarded to Ryan Shenvi and co-workers @Shenvi_Lab for their paper in #TetLett on cobalt-catalyzed alkene hydrogenation. Congratulations! 🥳 Read the winning paper here: bit.ly/EdChoice2021Org #cobalt #catalysis #hydrogenation
8
1
43
Raymond Twumasi 🇬🇭 retweeted
Hi Friends! Applications are open for Merck’s Underrepresented Chemists of Color Research Award! Applications are due March 1. It’s a great opportunity to network with Merck scientists and present your research. Email chemistsofcolor@merck.com with any questions #ChemTwitter 🧑🏽‍🔬
4
82
10
115
Congrats @BednarTaylor. Well deserved 👏🏿
Please join me in congratulating Taylor Bednar @nagiblab, Tyler Finnegan @BadjicL, Taylor Payne @TheSchultzLab, and Quansong (Sam) Zhu (Baker Group) on being awarded Presidential Fellowships in the 2022 university-wide competition!🏆👏🎉
1
2
Raymond Twumasi 🇬🇭 retweeted
Cut it out! @gloganb and Filippo's publication of a formal deletion of carbon to convert pyrimidines to pyrazoles is out in @J_A_C_S pubs.acs.org/doi/10.1021/jac…
2
48
5
311
Raymond Twumasi 🇬🇭 retweeted
Ever wanted to read an entire @ACSChemRev over a single cup* of coffee? Well, you’re in luck! A 2.5-page ChemRev (!) highlighting exciting recent advances in asymmetric catalysis of radical chemistry: pubs.acs.org/doi/full/10.102… * … or however else you consume @Twitter these days
2
53
1
440
"Abraham Badu-Tawiah, a chemistry professor @OhioState, created the X-Ed Foundation to provide schools in Ghana with basic resources." @TheLantern thelantern.com/2022/11/chemi…
1
1
11
Raymond Twumasi 🇬🇭 retweeted
Thanks #PfizerChemistry for a day of incredibly inspiring chemistry at your annual research forum! What an honor it’s been to share our science with such great scientists @Pfizer!
What a great talk from @nagiblab today at #PfizerChemistry in Groton! So much awesome work that's been done and thank you David for a sneak peak of incredible unpublished synthesis! Definitely check out the lab webpage: research.cbc.osu.edu/nagib.1…
2
53
Raymond Twumasi 🇬🇭 retweeted
Frustrated you got the wrong diastereomer? In @ScienceMagazine this week @LabWendlandt show a photocatalyst and HAT co-catalyst can epimerize tertiary stereocenters in a wide variety of complex molecules science.org/doi/10.1126/scie…
2
24
4
150
If you haven’t already, apply to participate in the @Pfizer Chemistry Connect symposium. I participated two years ago and I truly enjoyed it. Applications are due tomorrow, Oct. 5th, so don’t wait! I’m looking forward to hearing some awesome talks 😁#PfizerChemOutreach #NOBCChE
7
14
Had a great time at this year’s @NOBCChE conference in Orlando. I’m glad I got a chance to meet many of you and I hope you all made it back home safely! Here are a few of my fave moment:
1
1
21
Got a chance to meet some other amazing Pfizer colleagues #PfizerProud
1
1
13
Attended the award ceremony and watched as @OSU_CBC was well represented 😁. Congrats once again Amir & Sammy. Sorry for the bad quality #Buckeyes
4