Concept

Ring (chemistry)

Related publications (32)

Long-distance effect on one-bond C-C scalar couplings upon introduction of a double bond in bicyclic systems

Anomalous variations of one-bond C-C scalar coupling constants are observed in going from trinorbornane-to trinorbornene-like structures. Most notably, a IO-Hz increase is observed in the coupling constant involving the C-atoms of the ethano branch facing ...

1997

Asymmetric synthesis. XX. Preparation of a novel spiropiperidine system by the CN(R,S) method

Jieping Zhu

A novel spiropiperidine system I i.e. an aza structural analog of histrionicotoxin was constructed from 2-cyano-6-phenyloxazolopiperidine synthon II. The suitable quaternary carbon was created by alkylation at the position alpha to the nitrile followed by ...

1989

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