Thermal Interconversion of Phenylcarbene and Tropylidene. Preliminary communication
1970; Wiley; Volume: 53; Issue: 6 Linguagem: Inglês
10.1002/hlca.19700530628
ISSN1522-2675
Autores Tópico(s)Chemical Reactions and Mechanisms
ResumoAbstract Phenylcarbene and tropylidene interconvert in the gas‐phase, as evidenced by the formation of stilbene and heptafulvalene ( 5 ) from both at 300°. Heptafulvalene itself rearranges to stilbene and anthracene above 500°. Phenylcarbene, but not tropylidene, undergoes ring contraction to fulvenallene ( 9 ) at 900°. Formation of fluorene from diphenylcarbene involves a complete ring expansion to 2‐phenyltropylidene ( 14 ), and subsequent ring contraction to 2‐biphenylylcarbene ( 15 ).
Referência(s)