Introduction: an anthropology of intellectual exchange

Dialogues, encounters and interactions through which particular ways of knowing, understanding and thinking about the world are forged lie at the centre of anthropology. Such ‘intellectual exchange’ is also central to anthropologists’ own professional practice: from their interactions with research participants and modes of pedagogy to their engagements with each other and scholars from adjacent disciplines. This collection of essays explores how such processes might best be studied cross-culturally. Foregrounding the diverse interactions, ethical reasoning, and intellectual lives of people from across the continent of Asia, the volume develops an anthropology of intellectual exchange itself

One-Pot Multi-Tracer Synthesis of Novel ¹⁸F‑Labeled PET Imaging Agents

¹⁸F labeled phosphonium salts are increasingly important molecular probes for targeting the mitochondrial membrane potential depletion during apoptosis and for detecting myocardial perfusion deficit. Here, we introduce three new tracers, [¹⁸F]­MitoPhos_04, [¹⁸F]­MitoPhos_05, and [¹⁸F]­MitoPhos_07, that have the potential to act as mitochondrial imaging agents. Moreover, they have the added advantage of being synthesized in the same reaction vial from one radiolabeled synthon, demonstrating a new approach to synthesizing multiple tracers in one-pot, which is a highly useful means for increasing the throughput of radiotracer development. The radiosynthesis of the tracers was carried out on a fully automated system via a facile two-step reaction. Utilizing the radiolabeling of an ethyl azide, a copper-mediated 1,3-cycloaddition reaction and isolation via semiprep high-performance liquid chromatography (HPLC) allowed for the simultaneous synthesis of two or three tracers with a total synthesis time of less than 1 h

Yttrium Phosphasalen Initiators for <i>rac</i>-Lactide Polymerization: Excellent Rates and High Iso-Selectivities

Highly active yttrium phosphasalen initiators for the stereocontrolled ring-opening polymerization of <i>rac</i>-lactide are reported. The initiators are coordinated by a new class of ancillary ligand: an iminophosphorane derivative of the popular “salen” ligand, termed “phosphasalen”. Changing the phosphasalen structure enables access to high iso-selectivities (<i>P</i>_i = 0.84) or hetero-selectivities (<i>P</i>_s = 0.87). The initiators also show very high rates, excellent polymerization control, and tolerance to low loadings; furthermore, no chiral auxiliaries/ligands are needed for the stereocontrol. The combination of such high rates with high iso-selectivities is very unusual

Yttrium Phosphasalen Initiators for <i>rac</i>-Lactide Polymerization: Excellent Rates and High Iso-Selectivities

Highly active yttrium phosphasalen initiators for the stereocontrolled ring-opening polymerization of <i>rac</i>-lactide are reported. The initiators are coordinated by a new class of ancillary ligand: an iminophosphorane derivative of the popular “salen” ligand, termed “phosphasalen”. Changing the phosphasalen structure enables access to high iso-selectivities (<i>P</i>_i = 0.84) or hetero-selectivities (<i>P</i>_s = 0.87). The initiators also show very high rates, excellent polymerization control, and tolerance to low loadings; furthermore, no chiral auxiliaries/ligands are needed for the stereocontrol. The combination of such high rates with high iso-selectivities is very unusual