Photosensitised biphotonic chemistry of pyrimidine derivatives

Abstract

Biphotonic chemistry of pyrimidines is produced using a 355 nm laser and 2-methoxyacetophenone as photosensitiser.

Recent applications of biphotonic processes in organic synthesis

“…In this vein, the same research group has very recently published the intermolecular version of this reaction. 9 Again benzophenone chromophore as photosensitizer and tertbutyluracil as modified pyrimidine base were utilized; however, the strategy was now different. After the first UVA (355 nm) photon absorbed by the sensitizer, triplet-triplet energy transfer (TTEnT) occurred, giving rise to the nucleobase triplet which was able to absorb the second photon (355 nm) reaching a T n state.…”