![34. The Meta-Position of Phe4 in Leu-enkephalin Regulates Potency, Selectivity, Functional Activity, and Signaling Bias at the Delta and Mu Opioid Receptors](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/8418ae18-816e-44a1-8cdb-4a7b1937894b/34+TAR.png)
34. The Meta-Position of Phe4 in Leu-enkephalin Regulates Potency, Selectivity, Functional Activity, and Signaling Bias at the Delta and Mu Opioid Receptors
Cassell, R. J.; Sharma K. S.; Su, H.; Cummins, B. R.; Cui, H.; Mores, K. L.; Blaine, A. T.; Altman, R. A.;* van Rijn, R. M.*
![33. BBDFA: A Practical Reagent for Trifluoromethylation of Allylic and Benzylic Alcohols on Preparative Scale](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/814a614b-314f-4b7f-9d03-d49ed1c59f2d/33+TAR.png)
33. BBDFA: A Practical Reagent for Trifluoromethylation of Allylic and Benzylic Alcohols on Preparative Scale
Han, C.;* Alabanza, L. M.; Kelly, S. M.; Orsi, D. L.; Gosselin, F.; Altman, R. A.*
![32. Organocatalytic Strategy for Hydrophenolation of gem-Difluoroalkenes](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/8051a22c-10be-4b86-aaa2-d5548256cee0/32+TAR.png)
32. Organocatalytic Strategy for Hydrophenolation of gem-Difluoroalkenes
Orsi, D. L.; Yadav, M. R.; Altman, R. A.*
![31. Synthesis of C2-Deutero-L-Tryptophan by Sequential Ir-Catalyzed Reactions](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/d0a26a2d-485c-4b13-8dc1-4332d419b18d/31+TAR.png)
31. Synthesis of C2-Deutero-L-Tryptophan by Sequential Ir-Catalyzed Reactions
Vallakati, R. K.; Plotnikov, A. T.; Altman, R. A.*
![30. Catalytic One-Step Deoxytrifluoromethylation of Alcohols](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/685774b5-b1e8-4a96-8651-24c28baa26a4/30+TAR.png)
30. Catalytic One-Step Deoxytrifluoromethylation of Alcohols
de Azambuja, F.; Lovrien, S. K.; Ross, P.; Ambler, B. R.; Altman, R. A.*
![29. Synthesis of Leu-Enkephalin Peptidomimetics Containing Trifluromethylalkenes as Amide Isopolar Mimics](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/deb47800-1172-4376-865c-b370e8036ea0/29+TAR.png)
29. Synthesis of Leu-Enkephalin Peptidomimetics Containing Trifluromethylalkenes as Amide Isopolar Mimics
Eeda, V.; Selvaraju, M.; Altman, R. A.*
![28. Tyr1-ψ[(Z)CF═CH]-Gly2 Fluorinated Peptidomimetic Improves Distribution and Metabolism Properties of Leu-Enkephalin](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/b38e44d8-f805-4435-9027-405fb482a0d0/28+TAR.png)
28. Tyr1-ψ[(Z)CF═CH]-Gly2 Fluorinated Peptidomimetic Improves Distribution and Metabolism Properties of Leu-Enkephalin
Altman, R. A.;* Sharma, K. K.; Rajewski, L. G.; Toren, P. C.; Baltezor, M. J.; Pal, M.; Karad, S. N.
![27. Stepwise O-Atom Transfer in Heme-based Tryptophan Dioxygenase: The Role of Substrate Ammonium in the Epoxide Ring Opening](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/a2d8ac78-7d39-4b2f-b766-541e73649f13/27+TAR.png)
27. Stepwise O-Atom Transfer in Heme-based Tryptophan Dioxygenase: The Role of Substrate Ammonium in the Epoxide Ring Opening
Shin, I.; Ambler, B. R.; Wherritt, D.; Griffith, W.; Maldonado, A.; Altman, R. A.; Liu, A.*
![26. Exploiting the Unusual Effects of Fluorine in Methodology](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/f67a0baf-883f-4ba1-81c5-121698ec211e/26+TAR.png)
![25. Base Catalysis Enables Access to α,α-Difluoroalkylthio-ethers](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/3270c18b-c885-4354-bc42-00bb15a8fcb1/25+TAR.png)
25. Base Catalysis Enables Access to α,α-Difluoroalkylthio-ethers
Orsi, D. L.; Easley, B. J.; Lick, A. M.; Altman, R. A.*
![24. Synthesis and Opioid Activity of Tyr1–ψ[(Z)CF=CH]–Gly2 and Tyr1–ψ[(S)/(R)-CF3CH–NH]–Gly2 Leu-enkephalin Fluorinated Peptidomimetics](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/21ac3367-d851-433c-bd0a-e2996127a426/24+TAR.png)
24. Synthesis and Opioid Activity of Tyr1–ψ[(Z)CF=CH]–Gly2 and Tyr1–ψ[(S)/(R)-CF3CH–NH]–Gly2 Leu-enkephalin Fluorinated Peptidomimetics
Karad, S. N.; Pal, M.; Crowley, R. S.; Prisinzano, T. E.; Altman, R. A.*
![22. Palladium Catalysis Enables Benzylation of α,α-Difluoroketone Enolates](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/73679fa4-5445-4ae2-930a-36b13ced71dc/22+TAR.png)
22. Palladium Catalysis Enables Benzylation of α,α-Difluoroketone Enolates
Yang, M.-H.; Hunt, J. R.; Sharifi, N. Altman, R. A.*
![21. Copper-Catalyzed Synthesis of Trifluoroethylarenes from Benzylic Bromodifluoroacetates](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/014adb22-1c17-4d91-9a57-8d75a58e6247/21+TAR.png)
21. Copper-Catalyzed Synthesis of Trifluoroethylarenes from Benzylic Bromodifluoroacetates
Ambler, B. R.; Zhu, L.; Altman, R. A.*
![20. Ligand-controlled Regioselective Cu-Catalyzed Trifluoromethylation to Generate Trifluoromethyl Allenes](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/b5af03c0-f343-4f0d-977c-a2e7957cfd02/20+TAR.png)
20. Ligand-controlled Regioselective Cu-Catalyzed Trifluoromethylation to Generate Trifluoromethyl Allenes
Ambler, B. R.; Peddi, S.; Altman, R. A.*
![19. Ligand-Controlled Regiodivergent Palladium-catalyzed Decarboxylative Allylation Reaction to Access α,α-Difluoroketones](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/d059f517-2d4b-475a-a42e-a9fa606203b7/19+TAR.png)
![18. Metal-free Trifluoromethylation of Aromatic and Heteroaromatic Aldehydes and Ketones](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/052327fa-3fb7-49fe-98b5-fd5022f472d5/18+TAR.png)
18. Metal-free Trifluoromethylation of Aromatic and Heteroaromatic Aldehydes and Ketones
Qiao, Y.; Si, T.; Yang, M.-H.; Altman, R. A.*
![17. Copper-catalyzed Conversion of Propargylic Bromodifluoroacetates to Trifluoromethanes](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/360a478c-de4e-400f-9412-67f207e6d540/17+TAR.png)
17. Copper-catalyzed Conversion of Propargylic Bromodifluoroacetates to Trifluoromethanes
Ambler, B. R.; Peddi, S.; Altman, R. A.*
![16. Decarboxylative Fluorination Strategies for Accessing Medicinally-Relevant Products](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/470ad991-db22-433b-bc07-61c868d545d5/16+TAR.png)
16. Decarboxylative Fluorination Strategies for Accessing Medicinally-Relevant Products
Qiao, Y.; Ambler, B. R.; Zhu, L.; Altman, R. A.*
![15. Copper-Catalyzed Trifluoromethylation of Allylic Bromodifluoroacetic Esters](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/7b94369c-a3d3-43de-9c39-f6a1cc110dda/15+TAR.png)
15. Copper-Catalyzed Trifluoromethylation of Allylic Bromodifluoroacetic Esters
Ambler, B. R.; Altman, R. A.*
![14. Copper-Mediated Deoxygenative Trifluoromethylation of Benzylic Xanthates: Formation of C(sp3)–CF3 from an O-Based Electrophile](https://images.squarespace-cdn.com/content/v1/615f42729a3e7155f1428c2e/615ad3cb-625a-4eac-a892-9d1123b43a05/14+TAR.png)
14. Copper-Mediated Deoxygenative Trifluoromethylation of Benzylic Xanthates: Formation of C(sp3)–CF3 from an O-Based Electrophile
Zhu, L.; Liu, S.; Douglas, J. T.; Altman, R. A.*