# Direct N–H/α,α,β,β-C(sp<sup>3</sup>)–H functionalization of piperidine<i>via</i>an azomethine ylide route: synthesis of spirooxindoles bearing 3-substituted oxindoles

> Research article (Chemical Communications, 2017) · cited 35× · AI/ML

**Wikidata**: [openalex:W2570275594](https://www.wikidata.org/wiki/openalex:W2570275594)  
**Source**: https://4ort.xyz/entity/direct-nh-c-sp-sup-3-sup-h-functionalization-of-piperidine-i-via-i-an-azomethine-ylide-route-synthesis-of-spirooxindoles