Asymmetric 1, 3 - dipolar cycloaddition can be strongly catalyzed by chiral oxazaborolidines.手性唑硼烷酮能够催化不对称1, 3偶极加成反应并取得很好的效果.Most people's faces are asymmetric.大多数人的脸不对称。There are two DesB 1 - DPI moleCUles in an as...
Most people's faces are asymmetric.大多数人的脸不对称。We have made no reference to asymmetric carbon atoms.我们未曾涉及不对称碳原子.Asymmetric 1, 3 - dipolar cycloaddition can be strongly catalyzed by chiral oxazaborolidines.手性唑硼烷酮能够催化不...
菌体稠密地长满了一小块高度局限的特化的基质上.A highly localized, specialized piece of substrate is densely overgrown.这种现象在许多特化的 虫媒花 中较常见,尤其是通过蜜蜂传粉的花.It helps to promote cross - pollination and is often combined with self - incompatibility.七鳃鳗...