α,β-Unsaturated α’-alkoxy ketones have been prepared under mild conditions from allenes using water as the oxygen source and without the necessity of metals. The organocatalytic oxygenation-rearrangement sequence displays an exquisite chemo-, stereo-, and site-selectivity as well as good functional group compatibility. DFT calculations suggest th…[Read more]

Finally, a “chain-of-risk” approach to understanding outcomes may be warranted, since risk is likely explained by accumulation of and prolonged exposure to adverse socioeconomic, psychosocial, and health risks.As spatial languages, sign languages rely on spatial cognitive processes that are not involved for spoken languages. Interlocutors have…[Read more]