Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 21436-03-3, C6H14N2. A document type is Article, introducing its new discovery., name: (1S,2S)-Cyclohexane-1,2-diamine
The catalytic asymmetric ring opening of meso-epoxides with aromatic amines was achieved using a new proline-based N,N?-dioxide-indium tris(triflate) complex in high yields (up to 99%) with excellent enantioselectivities (up to 99% ee) under mild conditions. The coordination ability of N,N?-dioxide 1c was investigated by X-ray and NMR analysis. A plausible seven-coordinate transition state model was proposed. The chiral N,N?-dioxides surveyed were synthesized from proline through only three conventional steps. The procedure could be run on a gram-scale without any loss of enantioselectivity. This protocol provides a highly practical and useful tool for the bulky preparation of optically pure beta-amino alcohols.
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