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Welcome to ChemNews!
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Our May ChemNews showcases over 35 brand NEW and innovative Heterocyclic Building Blocks and other new building blocks and reagents for Chemical Synthesis. In addition, we're featuring the latest literature for chemical synthesis available from Sigma-Aldrich, as well our latest product highlights — all easily accessed from one convenient location.
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Phosphinothiol-Mediated Traceless Staudinger Ligation in Water
Raines and co-workers have prepared and investigated a series of phosphinothiols for their ability to mediate the traceless Staudinger ligation in water, and to be integrated with expressed protein ligation. Of the three phophinothiols (1–3) that were tested, 1 and 2 gave disappointing results in good part due to their poor water solubility and the protonation of the nitrogen atom in their iminophosphorane intermediate in aqueous media.
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