Microwave‐assisted Domino Cyclization for the Synthesis of Novel Spiro‐benzo[a]phenazine Annulated Heterocycles Catalyzed by a Basic Ionic Liquid
Sign Up to like & getrecommendations! Published in 2017 at "Journal of The Chinese Chemical Society"
DOI: 10.1002/jccs.201700034
Abstract: An efficient and green strategy for the improved synthesis of a biologically and pharmaceutically interesting multi-functionalized diverse novel spiro-benzo[a]phenazine annulated heterocycles was developed with the assistance of microwave irradiation. A sequential one-pot, two-step domino reaction… read more here.
Keywords: novel spiro; benzo phenazine; spiro benzo;
Glucopyranosylidene-spiro-benzo[ b][1,4]oxazinones and -benzo[ b][1,4]thiazinones: Synthesis and Investigation of Their Effects on Glycogen Phosphorylase and Plant Growth Inhibition.
Sign Up to like & getrecommendations! Published in 2019 at "Journal of agricultural and food chemistry"
DOI: 10.1021/acs.jafc.9b00443
Abstract: Glucopyranosylidene-spiro-benzo[ b][1,4]oxazinones were obtained via the corresponding 2-nitrophenyl glycosides obtained by two methods: (a) AgOTf-promoted glycosylation of 2-nitrophenol derivatives by O-perbenzoylated methyl (α-d-gluculopyranosyl bromide)heptonate or (b) Mitsunobu-type reactions of O-perbenzoylated methyl (α-d-gluculopyranose)heptonate with bulky 2-nitrophenols… read more here.
Keywords: plant; benzo; benzo oxazinones; inhibition ... See more keywords
TfOH-promoted Classical Nazarov-type Cyclization of Benzofulvenes: Synthesis of Polycyclic 5H,10'H-spiro[benzo[k]phenanthridine-5,6'-dibenzopentalenes].
Sign Up to like & getrecommendations! Published in 2021 at "Organic letters"
DOI: 10.1021/acs.orglett.1c01809
Abstract: The reaction of o-benzofulvene with TfOH leads to intramolecular cyclization through novel C-C and C-N bond formation, resulting in the formation of 5H,10'H-spiro[benzo[k]phenanthridine-5,6'-dibenzopentalene]. This protocol provides a new molecular framework with reasonable to excellent yields… read more here.
Keywords: cyclization; spiro benzo; benzo phenanthridine;