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Pulsed-laser photochemistry of pentanal at 355 nm

✍ Scribed by P. Paquet; R. Fellous; R. Stringat; G. Fabre

Book ID: 104226221
Publisher: Elsevier Science
Year: 1992
Tongue: French
Weight: 169 KB
Volume: 33
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)93975-3

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✦ Synopsis

Pure pentanal 1s wradzated wuh a frequency tripled Nd-YAG laser rn the rntensrly uuewol 0 l-l MW cm-2 Alpha-dtone and a-ketol are formed selectwely wzth quantum yrelds of 5 5 and 38%. respectzvely As only the SI state of the pentanal zs excited, the rerults obtained ore exphcable as a dynnmrc effect m connecrum wth the order of the reacnonr In UV photochermstry, allphatlc aldehydes lead to three pnmary processes of evolution* 2 decarbonylatlon with the formatlon of hydrocarbons and cleavage reactions m IX or 0 to the carbonyl, of type Nomsh 1 or I1 Moreover, automhlbltlon reactlonc generate RCHOH + RCO 1 or 1 radicals which are at the basis of the formation of Lompounds that are either monofunctlonal of oxydoreductlon or blfunctlonal of condensation sue h as u-dtietones, a-ketols a-&ols3 4 5 hv

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