Photoreluctant azoalkanes: 185-nm photolysis of E- and Z-diazacyclooct-2-ene | Zendy

Waldemar Adam | Zendy; Thomas Oppenländer | Zendy

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Photoreluctant azoalkanes: 185-nm photolysis of E- and Z-diazacyclooct-2-ene

Author(s) -

Waldemar Adam,

Thomas Oppenländer

Publication year - 1985

Publication title -

canadian journal of chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.323

H-Index - 68

eISSN - 1480-3291

pISSN - 0008-4042

DOI - 10.1139/v85-303

Subject(s) - chemistry , photoisomerization , cyclohexane , photodissociation , photochemistry , ene reaction , isomerization , medicinal chemistry , catalysis , organic chemistry

The l85-nm photolyses off E- and Z-1,2-diazacyclooct-1-enes (1) result mainly in denitrogenation, affording 1-hexene and cyclohexane in a 2:1 ratio. In comparison to the direct 350-nm photolyses the denitrogenation efficiencies are enhanced by 42- and 26-fold for the E- and Z-isomers, respectively. It is proposed that the photoisomerization (350 nm) takes place from the S 1 (n − ,π*)-state and the photodenitrogenation (185 nm) out of the S 2 -state.

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