ChemInform Abstract: PHOSPHORORGANISCHE HETEROCYCLISCHE VERBINDUNGEN 3. MITT. DIE SYNTH. UND UMWANDLUNGEN DES 10‐CHLOR‐10‐PHOSPHA‐9‐OXA‐9,10‐DIHYDROPHENANTRENS

Chernyshev, E. A.; Aksenov, V. I.; Ponomarev, V. V.; Golubtsov, S. A.; Bugerenko, E. F.

doi:10.1002/chin.197219354

Search citation statements

Order By: Relevance

Paper Sections

Select...

Methods1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2008

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The >P(O)H reactants were purchased from Aldrich (Schnelldorf, Germany) (6), or prepared according to known procedures (1) [11] and (4) [12]. 1,2-Dihydrophosphinine oxide 8 was synthesized as described earlier [13].…”

Section: Methodsmentioning

confidence: 99%

Phospha‐michael reactions involving p‐heterocyclic nucleophiles

Keglevich

Sipos

Takács

et al. 2008

Heteroatom Chemistry

View full text Add to dashboard Cite

P-heterocyclic γ-ketophosphonateswere synthesized by the Michael reaction of methyl vinyl ketone with dibenzo-1,2-oxaphosphorine 2-oxide, 1,3,2-dioxaphosphorine 2-oxide and benzo-1,3,2-dioxaphospholane 2-oxide, respectively. In the first two cases, 50% of 1,8-diazabicyclo[5.4.0]undec-7-ene had to be used that was also required in the addition of dibenzooxaphosphorine oxide to cyclohexenone to result in the formation of the corresponding γ-ketophosphonate. The addition of dibenzooxaphosphorine oxide to less reactive 1,2-dihydrophosphinine oxide was accomplished after activation by an equimolar amount of trimethylaluminum to afford a 3-P(O)<-1,2,3,6-tetrahydrophosphinine oxide, which was subjected to catalytic hydrogenation to provide the corresponding 1,2,3,4,5,6-hexahydrophosphinine oxide.

show abstract

Section: Methodsmentioning

confidence: 99%