Cambeiro, Fermin; Lopez, Susana; Varela, Jesus A.; Saa, Carlos published the article 《Vinyl Dihydropyrans and Dihydrooxazines: Cyclizations of Catalytic Ruthenium Carbenes Derived from Alkynals and Alkynones》. Keywords: pyran oxazine dihydro silylvinyl preparation; alkynal alkynone preparation diastereoselective cyclization trimethylsilyl diazomethane ruthenium carbene; alkynes; carbenes; cyclization; heterocycles; ruthenium.They researched the compound: Chloro(1,5-cyclooctadiene)(pentamethylcyclopentadienyl)ruthenium( cas:92390-26-6 ).SDS of cas: 92390-26-6. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:92390-26-6) here.
A novel synthesis of 2-vinyldihydropyrans and -dihydro-1,4-oxazines, e.g. I [X = (MeO2C)C, MeCO2CH2CH, Me3SiMe2OCH, TsN, BocN, etc.; R = H, Me, Ph], from alkynals and alkynones, e.g. II, has been developed. The cyclizations require a mild generation of catalytic ruthenium carbenes from terminal alkynes and (trimethylsilyl)diazomethane followed by trapping with carbonyl nucleophiles. Mechanistic aspects of these new cyclizations are discussed.
The article 《Vinyl Dihydropyrans and Dihydrooxazines: Cyclizations of Catalytic Ruthenium Carbenes Derived from Alkynals and Alkynones》 also mentions many details about this compound(92390-26-6)SDS of cas: 92390-26-6, you can pay attention to it, because details determine success or failure
Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method