Synthesis of 5,7-nonamethylene-1,3-diazaadamantan-6-one

Russian Chemical Bulletin - 5,7-Nonamethylene-1,3-diazaadamantan-6-one has been synthesized by condensation of cyclododecanone with [16]adamanzane. In the condensation of cyclododecanone with...     

Synthesis and structure of stereoisomers of 3,4-benzo-5,10-diphenyl-1,3-diaza-7-oxa-6-phosphabicyclo[4.3.1]decane-2,6-dione

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Synthesis of 5,7-dihydrobenzo[a]phenazin-5-one derivatives

The synthesis, purification and spectroscopic characterization of several phenazines was undertaken with the goal of discovering useful or improved fluorescent probes.     

Synthesis of 1-arylacenaphtho[1,2-d]pyrazoles and 5,7-Dehydro-5H,7H-benzo[b]acenaphtho[1,2-e]-1,3a,6a-triazapentalenes

2-Benzoyl- 5 and 2-acetylacenaphthenone 6 , prepared from the corresponding 1-acyl-2-(1-pyrrolidinyl)-acenaphthylenes 2 and 3 , reacted with arylhydrazines 8 under acidic conditions to give the corresponding 1-arylacenaphtho[1,2-d]pyrazoles 9 and 10 . Novel heteropentalene mesomeric betaines, 5,7-dehydro-5H,7H-benzo[b]acenaphtho[1,2-e]-1,3a,6a-triazapentalenes 13 and 14 were prepared by reductive cyclization of 1-(o-nitrophenyl)acenaphtho[1,2-d]pyrazoles 9d and 10d , respectively.     

Efficient one-pot synthesis of 1,3-diaryl-3H-benzo[f]chromenes using ferric hydrogensulfate

<正>An efficient and easy method for one-pot three-component synthesis of l,3-disubstituted-3H-benzo[f]chromenes by the condensation of naphtol,aromatic aldehyde derivatives and phenylacetylene in the presence of ferric hydrogensulfate[Fe(HSO_4)_3], has been described.The catalyst displayed high activity which afforded the corresponding 1,3-disubstituted-3H-benzo[f]chromenes in satisfying yields.Alkyl-substituted phenols were examined and the corresponding benzopyran derivatives were synthesized in moderate yields.Heterogeneous nature of the using catalyst made it reusable for further chemical reactions.     

An NMR study of quaternary ammonium salts of 5,7-dimethyl-1,3-diazaadamantan-6-one

The temperature dependence of the ¹H NMR spectra of quaternary ammonium salts of 5,7-dimethyl-1,3-diazaadamantan-6-one in D₂O was examined. The molar ratio of the ketone and hydrate forms was determined.