Indole, and structures derived from it, are a component of many natural substances, such as the amino acid tryptophan. A new catalytic reaction produces cyclopenta[b]indoles -- frameworks made of ...

In the realm of reactivity, the vinyl carbocation is a beast so fleeting, so keen to combine or rearrange, that many have doubted that it can be tamed to create molecules in a stereoselective way. But ...