Synthesis of Borane-Ammonia and its Application in the Titanium Tetrachloride Catalyzed Reduction of Carboxylic Acids, Including N-Protected Amino Acids 19
Henry J. Hamann, Abdulkhaliq A. Alawaed, and P. Veeraraghavan Ramachandran*

Preparation of 1,3-Dihydroxyphenazine 45
Trevor Dzwiniel, Emma Markun, James A. Kaduk, Aaron Hollas, Krzystof Pupek, and Nicholas Boaz*

A General Method for C-Alkylation of Nitroalkanes with Alkyl Halides: Nickel Photoredox Dual-Catalyzed C-Alkylation of Nitroalkanes 64
Sina Rezazadeh, Allyssa M. Conner, and Donald A. Watson*

Copper-Catalyzed Suzuki-Miyaura Coupling of Unactivated Alkyl Halides with Arylborons 86
Yonglei Zhou, Jian Li, and Weilong Xie*

Large-Scale NaBr/Selectfluor Mediated Alcohol Oxidation: Conversion of (-)-Borneol into (-)-Camphor 100
Shyam Sathyamoorthi*

Photoexcited Nitroarenes for the Anaerobic Cleavage of Alkenes 114
Lifeng Yin, Ben S. Kozloff, Ning Deng, Preya D. Persaud, Ajay H. Bansode, Dan E. Wise, Jenny S. Martinez, and Marvin Parasram*

C(sp2)-S Cross-Coupling Reactions with Adaptive Dynamic Homogeneous Catalysis: Synthesis of Ethyl 4-((3-Ethoxy-3-oxopropyl)thio)benzoate 128
Florence Babawale, Indrajit Ghosh*, and Burkhard König*

Preparation of (Z)-N-Phenoxybenzimidoyl Chloride 143
Joseph P. Lokant, Ross M. Dare, and David A. Nagib*

Synthesis of Serine Derived Oxazolines Using a Molybdenum Dioxide Catalyst 156
Wyatt C. Powell, Garrett E. Evenson, and Maciej A. Walczak*

Synthesis of 1-(phenylsulfonyl)bicyclo[1.1.0]butane from Methyl Phenyl Sulfone and Epichlorohydrin 185
Joanna E. Muir, Myunggi Jung, and Vincent N. G. Lindsay*

Iodine-Catalyzed Stereospecific anti-Diamination of trans- -Methylstyrene 203
Takeshi Sugiyama, Chiyuki Naito, and Satoshi Minakata*

Large-Scale Syntheses of Silanoxy-Tetrahydrofurans via Stereospecific [5,5]-Rearrangements of Silanol Epoxides 217
Silver Raju and Shyam Sathyamoorthi*

βEfficient Preparation of Chiral Hydroxylamines via Nickel-Catalyzed Asymmetric Hydrogenation of Oximes 236
Bowen Li, Jianzhong Chen, and Wanbin Zhang*

Rapid Access to Enantiopure Protected (R)-Paraconyl Alcohol 251
Haylie E. Hennigan, Namuunzul Otgontseren, and Elizabeth I. Parkinson*

Editorial
Announcing "OS Techniques" - A New Category of Articles in Organic Syntheses 273
Rick L. Danheiser

OS Techniques
Purification of Organic Compounds by Flash Column Chromatography 276
Benjamin D. Senzer, Cholapat Varongchayakul, Rick L. Danheiser*, Brian Daniels, and Vy M. Dong*

OS Techniques
Glass Cannula for Bulb-to-Bulb Cold Transfer 303
Kaylin N. Flesch, Tyler J. Fulton, Nathan Hart, and Brian M. Stoltz*

Synthesis of gem-Difluoroalkenes through Ramberg-Bäcklund Reaction of Alkyltriflones 315
Motoo Ohtsuka, Yasuyo Tahara-Tezuka, Yuuki Maekawa, Cathleen M. Crudden*, and Masakazu Nambo*

Synthesis of 6-Methoxy-2-methyl-2-(4-methylpent-3-en-1-yl) chroman-4-one via Kabbe Condensation 335
Stephen A. Chamness, Emily F. Traficante, Trenton R. Vogel, and Corinna S. Schindler*

Preparation of Bu-MsFluind-Br 350
Lucas Wagner and Josep Cornella*

Synthesis of α-Aryl Ketones via the Nickel-Catalyzed Hydroacylation of Aryl Alkenes with Aroyl Fluorides 367
Yoonho Lee, Yujin Jung, Seonhwa Choo, and Kwangmin Shin*

Synthesis of meta-Substituted Benzenes via Mo-Catalyzed Intermolecular Deoxygenative Coupling of Ynones and Allylic Amines 381
Yi-Zhe Yu, Gang Fang, Hong-Yi Su, and Chun-Xiang Zhuo*

Large-Scale Alkene Dimesyloxylation 398
Shyam Sathyamoorthi*

Acid-Mediated Hydroaminomethylation of Unactivated Alkenes 414
Uros Vezonik, Paolo Piacentini and Nuno Maulide*

Hydrosilylation of Propiolate Esters 428
Allison M. Clark, Giulianna Miseo, and Neil K. Garg*

Synthesis of Abietatriene via Nitrogen Deletion 442
Julia L. Driscoll, Carys E. Obertone, Liao Chen, and Mark D. Levin*

Oxidative Nitrogen Atom Insertion into Cyclopentenones 465
Bence B. Botlik and Bill Morandi*

Preparation of N-tert-Butylbenzenesulfinimidoyl Chloride 477
Teruaki Mukaiyama, Yasuo Nakamura, and Jun-ichi Matsuo*

Large-Scale Amino-Hydroxylation Using Tethered Nitreniums 494
Shyam Sathyamoorthi*

Discussion Addendum:
Nickel-Catalyzed Synthesis of Ketones from Alkyl Halides and Acid Chlorides: Preparation of Ethyl 4-Oxododecanoate 512
Omar M. Beleh and Daniel J. Weix*

Synthesis of 4,4-Dimethyl-1,6-Heptadiyne and Derivatives from Dimedone 534
Amir Tavakoli, Nathaniel J. Selvaraj, and Gregory B. Dudley*

Preparation of S-Trifluoromethyl Trifluoromethanesulfonothioate (TTST), a Highly Versatile and Atom-economical Trifluoromethylthiolating Agent 562
Seyedesahar Miraghaee, Teruo Umemoto, and Gerald B. Hammond*

Palladium-Catalyzed Carbonylative Spirolactonization of Hydroxycyclopropanols 582
Cyrus C. Gudeman, Courtney M. Wiethorn, and Mingji Dai*

Umpolung Synthesis of α-Bromo Secondary Amides from Unactivated Hydroxamates 601
Rui Wang, Hao Cao, and Wenbo H. Liu*

Enzymatic Saponification of Esters Containing β-Leaving Groups 625
Benjamin A. Janda, Allison M. Clark, and Neil K. Garg*

Preparation of Hexafluoroisopropyl Sulfamate (HFIPS) for the Sulfamoylation of Alcohols and Amines 637
Mathew L. Piotrowski, Matthew Sguazzin, Jarrod W. Johnson, and Jakob Magolan*

Preparation of (S,S)-B2bg2, a Chiral Diboron Reagent 657
Cliff Yang, Brooklyn Maddox, Anshu Yadav, and Robert E. Maleczka Jr.*