Naslov
SYNTHESIS AND PHOTOCHEMISTRY OF NOVEL N-PHTHALIMIDO DIPEPTIDES

Autori
Sohora, Margareta ; Šumanovac Ramljak, Tatjana ; Mlinarić-Majerski, Kata ; Basarić, Nikola

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
23. hrvatski skup kemičara i kemijskih inženjera / - Osijek, 2013, 157-157

Skup
23. hrvatski skup kemičara i kemijskih inženjera

Mjesto i datum
Osijek, Hrvatska, 21-24.04.2013

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
Fotokemija ftalimida; N-ftalimido dipeptidi
(Photochemistry of phthalimides; N-phthalimido dipeptides)

Sažetak
Photochemistry of phthalimides is a useful synthetic tool giving rise to different polycyclic compounds arising from intramolecular H-abstraction, cycloaditions or photoinduced electron transfer (PET) reactions.[1] For example, it was demonstrated that photodecarboxlyative cyclization of N-phenylphthalimide carboxylic acids leads to the formation of medium-size rings.[2] On the other hand, we have shown that PET induced decarboxylative addition of 3-(N-phthalimido)adamantanecarboxylic acid on electron deficient alkenes can be used for the synthesis of more complex phthalimidoadamantane systems.[3] In continuation of our investigation we have prepared a series of dipeptides 1a, b with a glycine or L-phenylalanine at the C-terminus. In adition, to determine the influence of the rigid spacer between the phthalimide (electron acceptor) and the carboxylic group (electron donor), we have prepared the phenyl analogues of dipeptides 2a, b. On irradiation of the dipeptides, photodecarboxlation takes place, and in the case of adamantyl derivatives, gives cyclization products 4. The mechanism of the photochemical reaction was elucidated by preparative irradiations and laser flash photolysis.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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